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</div> <div class="control"> <button class="button is-small is-link">Go</button> </div> </div> </form> </div> </div> <ol class="breathe-horizontal" start="1"> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2409.02798">arXiv:2409.02798</a> <span> [<a href="https://arxiv.org/pdf/2409.02798">pdf</a>, <a href="https://arxiv.org/format/2409.02798">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Accelerator Physics">physics.acc-ph</span> </div> </div> <p class="title is-5 mathjax"> Beam Breakup Instability Studies of Powerful Energy Recovery Linac for Experiments </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Setiniyaz%2C+S">Sadiq Setiniyaz</a>, <a href="/search/physics?searchtype=author&query=Apsimon%2C+R">R. Apsimon</a>, <a href="/search/physics?searchtype=author&query=Williams%2C+P+H">P. H. Williams</a>, <a href="/search/physics?searchtype=author&query=Barbagallo%2C+C">C. Barbagallo</a>, <a href="/search/physics?searchtype=author&query=Bogacz%2C+S+A">S. A. Bogacz</a>, <a href="/search/physics?searchtype=author&query=Bodenstei%2C+R+M">R. M. Bodenstei</a>, <a href="/search/physics?searchtype=author&query=Deitrick%2C+K">K. Deitrick</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2409.02798v1-abstract-short" style="display: inline;"> The maximum achievable beam current in an Energy Recovery Linac (ERL) is often constrained by Beam Breakup (BBU) instability. Our previous research highlighted that filling patterns have a substantial impact on BBU instabilities in multi-pass ERLs. In this study, we extend our investigation to the 8-cavity model of the Powerful ERL for Experiment (PERLE). We evaluate its requirements for damping c… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2409.02798v1-abstract-full').style.display = 'inline'; document.getElementById('2409.02798v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2409.02798v1-abstract-full" style="display: none;"> The maximum achievable beam current in an Energy Recovery Linac (ERL) is often constrained by Beam Breakup (BBU) instability. Our previous research highlighted that filling patterns have a substantial impact on BBU instabilities in multi-pass ERLs. In this study, we extend our investigation to the 8-cavity model of the Powerful ERL for Experiment (PERLE). We evaluate its requirements for damping cavity Higher Order Modes (HOMs) and propose optimal filling patterns and bunch timing strategies. Our findings reveal a significant new insight: while filling patterns are crucial, the timing of bunches also plays a critical role in mitigating HOM beam loading and BBU instability. This previously underestimated factor is essential for effective BBU control. We estimated the PERLE threshold current using both analytical and numerical models, incorporating the designed PERLE HOM dampers. During manufacturing, HOM frequencies are expected to vary slightly, with an assumed RMS frequency jitter of 0.001 between cavities for the same HOM. Introducing this jitter into our models, we found that the dampers effectively suppressed BBU instability, achieving a threshold current an order of magnitude higher than the design requirement. Our results offer new insights into ERL BBU beam dynamics and have important implications for the design of future ERLs. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2409.02798v1-abstract-full').style.display = 'none'; document.getElementById('2409.02798v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 4 September, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 2024. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2408.16880">arXiv:2408.16880</a> <span> [<a href="https://arxiv.org/pdf/2408.16880">pdf</a>, <a href="https://arxiv.org/format/2408.16880">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Accelerator Physics">physics.acc-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevAccelBeams.27.084802">10.1103/PhysRevAccelBeams.27.084802 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> The Continuous Electron Beam Accelerator Facility at 12 GeV </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Adderley%2C+P+A">P. A. Adderley</a>, <a href="/search/physics?searchtype=author&query=Ahmed%2C+S">S. Ahmed</a>, <a href="/search/physics?searchtype=author&query=Allison%2C+T">T. Allison</a>, <a href="/search/physics?searchtype=author&query=Bachimanchi%2C+R">R. Bachimanchi</a>, <a href="/search/physics?searchtype=author&query=Baggett%2C+K">K. Baggett</a>, <a href="/search/physics?searchtype=author&query=BastaniNejad%2C+M">M. BastaniNejad</a>, <a href="/search/physics?searchtype=author&query=Bevins%2C+B">B. Bevins</a>, <a href="/search/physics?searchtype=author&query=Bevins%2C+M">M. Bevins</a>, <a href="/search/physics?searchtype=author&query=Bickley%2C+M">M. Bickley</a>, <a href="/search/physics?searchtype=author&query=Bodenstein%2C+R+M">R. M. Bodenstein</a>, <a href="/search/physics?searchtype=author&query=Bogacz%2C+S+A">S. A. Bogacz</a>, <a href="/search/physics?searchtype=author&query=Bruker%2C+M">M. Bruker</a>, <a href="/search/physics?searchtype=author&query=Burrill%2C+A">A. Burrill</a>, <a href="/search/physics?searchtype=author&query=Cardman%2C+L">L. Cardman</a>, <a href="/search/physics?searchtype=author&query=Creel%2C+J">J. Creel</a>, <a href="/search/physics?searchtype=author&query=Chao%2C+Y+-">Y. -C. Chao</a>, <a href="/search/physics?searchtype=author&query=Cheng%2C+G">G. Cheng</a>, <a href="/search/physics?searchtype=author&query=Ciovati%2C+G">G. Ciovati</a>, <a href="/search/physics?searchtype=author&query=Chattopadhyay%2C+S">S. Chattopadhyay</a>, <a href="/search/physics?searchtype=author&query=Clark%2C+J">J. Clark</a>, <a href="/search/physics?searchtype=author&query=Clemens%2C+W+A">W. A. Clemens</a>, <a href="/search/physics?searchtype=author&query=Croke%2C+G">G. Croke</a>, <a href="/search/physics?searchtype=author&query=Daly%2C+E">E. Daly</a>, <a href="/search/physics?searchtype=author&query=Davis%2C+G+K">G. K. Davis</a>, <a href="/search/physics?searchtype=author&query=Delayen%2C+J">J. Delayen</a> , et al. (114 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2408.16880v1-abstract-short" style="display: inline;"> This review paper describes the energy-upgraded CEBAF accelerator. This superconducting linac has achieved 12 GeV beam energy by adding 11 new high-performance cryomodules containing eighty-eight superconducting cavities that have operated CW at an average accelerating gradient of 20 MV/m. After reviewing the attributes and performance of the previous 6 GeV CEBAF accelerator, we discuss the upgrad… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2408.16880v1-abstract-full').style.display = 'inline'; document.getElementById('2408.16880v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2408.16880v1-abstract-full" style="display: none;"> This review paper describes the energy-upgraded CEBAF accelerator. This superconducting linac has achieved 12 GeV beam energy by adding 11 new high-performance cryomodules containing eighty-eight superconducting cavities that have operated CW at an average accelerating gradient of 20 MV/m. After reviewing the attributes and performance of the previous 6 GeV CEBAF accelerator, we discuss the upgraded CEBAF accelerator system in detail with particular attention paid to the new beam acceleration systems. In addition to doubling the acceleration in each linac, the upgrade included improving the beam recirculation magnets, adding more helium cooling capacity to allow the newly installed modules to run cold, adding a new experimental hall, and improving numerous other accelerator components. We review several of the techniques deployed to operate and analyze the accelerator performance, and document system operating experience and performance. In the final portion of the document, we present much of the current planning regarding projects to improve accelerator performance and enhance operating margins, and our plans for ensuring CEBAF operates reliably into the future. For the benefit of potential users of CEBAF, the performance and quality measures for beam delivered to each of the experimental halls is summarized in the appendix. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2408.16880v1-abstract-full').style.display = 'none'; document.getElementById('2408.16880v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 29 August, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> August 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">66 pages, 73 figures, 21 tables</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> JLAB-ACC-23-3940 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. Accel. Beams 27 (2024) 084802 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2210.11866">arXiv:2210.11866</a> <span> [<a href="https://arxiv.org/pdf/2210.11866">pdf</a>, <a href="https://arxiv.org/format/2210.11866">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Accelerator Physics">physics.acc-ph</span> </div> </div> <p class="title is-5 mathjax"> Review of coupled betatron motion parametrizations and applications to strongly coupled lattices </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Vanwelde%2C+M">Marion Vanwelde</a>, <a href="/search/physics?searchtype=author&query=Hernalsteens%2C+C">C茅dric Hernalsteens</a>, <a href="/search/physics?searchtype=author&query=Bogacz%2C+S+A">S. Alex Bogacz</a>, <a href="/search/physics?searchtype=author&query=Machida%2C+S">Shinji Machida</a>, <a href="/search/physics?searchtype=author&query=Pauly%2C+N">Nicolas Pauly</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2210.11866v2-abstract-short" style="display: inline;"> The coupling of transverse motion is a natural occurrence in particle accelerators, either in the form of a residual coupling arising from imperfections or originating by design from strong systematic coupling fields. While the first can be treated perturbatively, the latter requires a robust approach adapted to strongly coupled optics and a parametrization of the linear optics must be performed t… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2210.11866v2-abstract-full').style.display = 'inline'; document.getElementById('2210.11866v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2210.11866v2-abstract-full" style="display: none;"> The coupling of transverse motion is a natural occurrence in particle accelerators, either in the form of a residual coupling arising from imperfections or originating by design from strong systematic coupling fields. While the first can be treated perturbatively, the latter requires a robust approach adapted to strongly coupled optics and a parametrization of the linear optics must be performed to explore beam dynamics in such peculiar lattices. This paper reviews the main concepts commonly put forth to describe coupled optics and clarifies the proposed parametrization formalisms. The links between the generalized Twiss parameters used by the different approaches are formally proven, and their physical interpretations are highlighted. The analytical methods have been implemented in a reference Python package and connected with a ray-tracing code to explore strongly coupled lattices featuring complex 3D fields. Multiple examples are discussed in detail to highlight the key physical interpretations of the parametrizations and characteristics of the lattices. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2210.11866v2-abstract-full').style.display = 'none'; document.getElementById('2210.11866v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 31 October, 2022; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 21 October, 2022; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2022. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">33 pages, 17 figures, to be published in Physical Review Accelerators and Beams (PRAB)</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2206.07678">arXiv:2206.07678</a> <span> [<a href="https://arxiv.org/pdf/2206.07678">pdf</a>, <a href="https://arxiv.org/format/2206.07678">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Accelerator Physics">physics.acc-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> </div> <p class="title is-5 mathjax"> An Energy Recovery Linac for the LHeC </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Bogacz%2C+S+A">S. Alex Bogacz</a>, <a href="/search/physics?searchtype=author&query=Holzer%2C+B+J">Bernhard J. Holzer</a>, <a href="/search/physics?searchtype=author&query=Osborne%2C+J+A">John A. Osborne</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2206.07678v1-abstract-short" style="display: inline;"> The LHeC provides an intense, high energy electron beam to collide with the LHC. It represents the highest energy application of energy recovery linac (ERL) technology which is increasingly recognized as one of the major pilot technologies for the development of particle physics because it utilizes and stimulates superconducting RF technology progress, and it increases intensity while keeping the… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2206.07678v1-abstract-full').style.display = 'inline'; document.getElementById('2206.07678v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2206.07678v1-abstract-full" style="display: none;"> The LHeC provides an intense, high energy electron beam to collide with the LHC. It represents the highest energy application of energy recovery linac (ERL) technology which is increasingly recognized as one of the major pilot technologies for the development of particle physics because it utilizes and stimulates superconducting RF technology progress, and it increases intensity while keeping the power consumption low. The LHeC instantaneous luminosity is determined through the integrated luminosity goal. The electron beam energy is chosen to achieve TeV cms collision energy and enable competitive searches and precision Higgs boson measurements. The wall-plug power has been constrained to 100 MW. Two super-conducting linacs of about 900 m length, which are placed opposite to each other, accelerate the passing electrons by 8.3 GeV each. This leads to a final electron beam energy of about 50 GeV in a 3-turn racetrack energy recovery linac configuration. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2206.07678v1-abstract-full').style.display = 'none'; document.getElementById('2206.07678v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 15 June, 2022; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> June 2022. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">arXiv admin note: substantial text overlap with arXiv:2007.14491</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2108.09111">arXiv:2108.09111</a> <span> [<a href="https://arxiv.org/pdf/2108.09111">pdf</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Accelerator Physics">physics.acc-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1088/1748-0221/17/01/P01011">10.1088/1748-0221/17/01/P01011 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Novel Concept of Circular-Linear Energy Recovery Accelerator to Probe the Energy Frontier </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Konoplev%2C+I+V">I. V. Konoplev</a>, <a href="/search/physics?searchtype=author&query=Bogacz%2C+S+A">S. A. Bogacz</a>, <a href="/search/physics?searchtype=author&query=Shashkov%2C+Y">Ya. Shashkov</a>, <a href="/search/physics?searchtype=author&query=Gusarova%2C+M+A">M. A. Gusarova</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2108.09111v1-abstract-short" style="display: inline;"> Energy-frontier accelerators provide powerful tools performing high precision measurements confirming the fundamental of the physics and broadening new research horizons. Such machines are either driven by circular or linear accelerators. The circular machines, having the center-mass (CM) energy values reaching 200 GeV (for leptons) and above, experience beam energy loss and quality dilution, for… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2108.09111v1-abstract-full').style.display = 'inline'; document.getElementById('2108.09111v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2108.09111v1-abstract-full" style="display: none;"> Energy-frontier accelerators provide powerful tools performing high precision measurements confirming the fundamental of the physics and broadening new research horizons. Such machines are either driven by circular or linear accelerators. The circular machines, having the center-mass (CM) energy values reaching 200 GeV (for leptons) and above, experience beam energy loss and quality dilution, for example, due to synchrotron radiation, limiting the overall CM energy achievable and requiring a constant energy top-up to compensate the loss and the beam quality dilution. Linear colliders overcome these limitations, while the finite capabilities of generating high average current beams limits the luminosity. This is partially compensated by the quality of the colliding beams. In this work, we suggest a novel design of circular-linear accelerator based on the merging of the "non-emitting", low-energy storage rings and energy recovery linear accelerators. We suggest using the recently considered dual-axis asymmetric cavities to enable the operation of such a system, and in particular the energy recovery from spent, high-intensity beams. The machine considered, under the scope of the SNOWMASS-2021 initiative, can be potentially used to reach ultimate energy frontiers in high-energy physics as well as to drive next generation light sources. The merging of circular and linear systems, and applications of dual axes cavities, should allow the maintaining of high beam quality, high luminosity, and high energy efficiency - "The Best of Both Words". It also offers a flexible energy management, opening clear opportunity for reducing the running cost. We note that the numbers shown in the paper are for illustration purpose and can be improved further. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2108.09111v1-abstract-full').style.display = 'none'; document.getElementById('2108.09111v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 20 August, 2021; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> August 2021. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">The paper is 20 pages long, it has 6 figures, and 5 tables. The main text is 8 page long. The paper is written under the scope of the SNOWMASS-2021 initiative. The paper will be submited to Physical Review Accelerators and Beams</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1803.07431">arXiv:1803.07431</a> <span> [<a href="https://arxiv.org/pdf/1803.07431">pdf</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Accelerator Physics">physics.acc-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1088/1748-0221/13/06/T06003">10.1088/1748-0221/13/06/T06003 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> The NuMAX Long Baseline Neutrino Factory Concept </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Delahaye%2C+J">J-P. Delahaye</a>, <a href="/search/physics?searchtype=author&query=Ankenbrandt%2C+C+M">C. M. Ankenbrandt</a>, <a href="/search/physics?searchtype=author&query=Bogacz%2C+S+A">S. A. Bogacz</a>, <a href="/search/physics?searchtype=author&query=Huber%2C+P">P. Huber</a>, <a href="/search/physics?searchtype=author&query=Kirk%2C+H+G">H. G. Kirk</a>, <a href="/search/physics?searchtype=author&query=Neuffer%2C+D">D. Neuffer</a>, <a href="/search/physics?searchtype=author&query=Palmer%2C+M+A">M. A. Palmer</a>, <a href="/search/physics?searchtype=author&query=Ryne%2C+R">R. Ryne</a>, <a href="/search/physics?searchtype=author&query=Snopok%2C+P+V">P. V. Snopok</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1803.07431v2-abstract-short" style="display: inline;"> A Neutrino Factory where neutrinos of all species are produced in equal quantities by muon decay is described as a facility at the intensity frontier for exquisite precision providing ideal conditions for ultimate neutrino studies and the ideal complement to Long Baseline Facilities like LBNF at Fermilab. It is foreseen to be built in stages with progressively increasing complexity and performance… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1803.07431v2-abstract-full').style.display = 'inline'; document.getElementById('1803.07431v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1803.07431v2-abstract-full" style="display: none;"> A Neutrino Factory where neutrinos of all species are produced in equal quantities by muon decay is described as a facility at the intensity frontier for exquisite precision providing ideal conditions for ultimate neutrino studies and the ideal complement to Long Baseline Facilities like LBNF at Fermilab. It is foreseen to be built in stages with progressively increasing complexity and performance, taking advantage of existing or proposed facilities at an existing laboratory like Fermilab. A tentative layout based on a recirculating linac providing opportunities for considerable saving is discussed as well as its possible evolution toward a muon collider if and when requested by Physics. Tentative parameters of the various stages are presented as well as the necessary R&D to address the technological issues and demonstrate their feasibility. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1803.07431v2-abstract-full').style.display = 'none'; document.getElementById('1803.07431v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 7 May, 2018; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 19 March, 2018; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 2018. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">JINST Special Issue on Muon Accelerators. arXiv admin note: text overlap with arXiv:1308.0494, arXiv:1502.01647</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1708.01274">arXiv:1708.01274</a> <span> [<a href="https://arxiv.org/pdf/1708.01274">pdf</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Accelerator Physics">physics.acc-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1088/1748-0221/13/02/P02002">10.1088/1748-0221/13/02/P02002 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Muon Acceleration Concepts for NuMAX: 'Dual-use' Linac and 'Dogbone' RLA </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Bogacz%2C+S+A">S. Alex Bogacz</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1708.01274v1-abstract-short" style="display: inline;"> We summarize the current state of a concept for muon acceleration aimed at a future Neutrino Factory. The main thrust of these studies was to reduce the overall cost while maintaining performance by exploring the interplay between the complexity of the cooling systems and the acceptance of the accelerator complex. To ensure adequate survival for the short-lived muons, acceleration must occur at hi… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1708.01274v1-abstract-full').style.display = 'inline'; document.getElementById('1708.01274v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1708.01274v1-abstract-full" style="display: none;"> We summarize the current state of a concept for muon acceleration aimed at a future Neutrino Factory. The main thrust of these studies was to reduce the overall cost while maintaining performance by exploring the interplay between the complexity of the cooling systems and the acceptance of the accelerator complex. To ensure adequate survival for the short-lived muons, acceleration must occur at high average gradient. The need for large transverse and longitudinal acceptances drives the design of the acceleration system to an initially low RF frequency, e.g., 325 MHz, which is then increased to 650 MHz as the transverse size shrinks with increasing energy. High-gradient normal conducting RF cavities at these frequencies require extremely high peak-power RF sources. Hence superconducting RF (SRF) cavities are chosen. We consider two cost effective schemes for accelerating muon beams for a stageable Neutrino Factory: exploration of the so-called 'dual-use' linac concept, where the same linac structure is used for acceleration of both H minus and muons and, alternatively, an SRF-efficient design based on a multi-pass (4.5) 'dogbone' RLA, extendable to multi-pass FFAG-like arcs. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1708.01274v1-abstract-full').style.display = 'none'; document.getElementById('1708.01274v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 3 August, 2017; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> August 2017. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1502.01647">arXiv:1502.01647</a> <span> [<a href="https://arxiv.org/pdf/1502.01647">pdf</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Accelerator Physics">physics.acc-ph</span> </div> </div> <p class="title is-5 mathjax"> A Staged Muon Accelerator Facility For Neutrino and Collider Physics </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Delahaye%2C+J">Jean-Pierre Delahaye</a>, <a href="/search/physics?searchtype=author&query=Ankenbrandt%2C+C">Charles Ankenbrandt</a>, <a href="/search/physics?searchtype=author&query=Brice%2C+S">Stephen Brice</a>, <a href="/search/physics?searchtype=author&query=Bross%2C+A+D">Alan David Bross</a>, <a href="/search/physics?searchtype=author&query=Denisov%2C+D">Dmitri Denisov</a>, <a href="/search/physics?searchtype=author&query=Eichten%2C+E">Estia Eichten</a>, <a href="/search/physics?searchtype=author&query=Holmes%2C+S">Stephen Holmes</a>, <a href="/search/physics?searchtype=author&query=Lipton%2C+R">Ronald Lipton</a>, <a href="/search/physics?searchtype=author&query=Neuffer%2C+D">David Neuffer</a>, <a href="/search/physics?searchtype=author&query=Palmer%2C+M+A">Mark Alan Palmer</a>, <a href="/search/physics?searchtype=author&query=Bogacz%2C+S+A">S. Alex Bogacz</a>, <a href="/search/physics?searchtype=author&query=Huber%2C+P">Patrick Huber</a>, <a href="/search/physics?searchtype=author&query=Kaplan%2C+D+M">Daniel M. Kaplan</a>, <a href="/search/physics?searchtype=author&query=Snopok%2C+P">Pavel Snopok</a>, <a href="/search/physics?searchtype=author&query=Kirk%2C+H+G">Harold G. Kirk</a>, <a href="/search/physics?searchtype=author&query=Palmer%2C+R+B">Robert B. Palmer</a>, <a href="/search/physics?searchtype=author&query=Ryne%2C+R+D">Robert D. Ryne</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1502.01647v1-abstract-short" style="display: inline;"> Muon-based facilities offer unique potential to provide capabilities at both the Intensity Frontier with Neutrino Factories and the Energy Frontier with Muon Colliders. They rely on a novel technology with challenging parameters, for which the feasibility is currently being evaluated by the Muon Accelerator Program (MAP). A realistic scenario for a complementary series of staged facilities with in… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1502.01647v1-abstract-full').style.display = 'inline'; document.getElementById('1502.01647v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1502.01647v1-abstract-full" style="display: none;"> Muon-based facilities offer unique potential to provide capabilities at both the Intensity Frontier with Neutrino Factories and the Energy Frontier with Muon Colliders. They rely on a novel technology with challenging parameters, for which the feasibility is currently being evaluated by the Muon Accelerator Program (MAP). A realistic scenario for a complementary series of staged facilities with increasing complexity and significant physics potential at each stage has been developed. It takes advantage of and leverages the capabilities already planned for Fermilab, especially the strategy for long-term improvement of the accelerator complex being initiated with the Proton Improvement Plan (PIP-II) and the Long Baseline Neutrino Facility (LBNF). Each stage is designed to provide an R&D platform to validate the technologies required for subsequent stages. The rationale and sequence of the staging process and the critical issues to be addressed at each stage, are presented. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1502.01647v1-abstract-full').style.display = 'none'; document.getElementById('1502.01647v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 5 February, 2015; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> February 2015. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">5 pp</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> FERMILAB-CONF-14-211-APC-E-T </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1308.6822">arXiv:1308.6822</a> <span> [<a href="https://arxiv.org/pdf/1308.6822">pdf</a>, <a href="https://arxiv.org/format/1308.6822">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Accelerator Physics">physics.acc-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> </div> </div> <p class="title is-5 mathjax"> nuSTORM - Neutrinos from STORed Muons: Proposal to the Fermilab PAC </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Adey%2C+D">D. Adey</a>, <a href="/search/physics?searchtype=author&query=Agarwalla%2C+S+K">S. K. Agarwalla</a>, <a href="/search/physics?searchtype=author&query=Ankenbrandt%2C+C+M">C. M. Ankenbrandt</a>, <a href="/search/physics?searchtype=author&query=Asfandiyarov%2C+R">R. Asfandiyarov</a>, <a href="/search/physics?searchtype=author&query=Back%2C+J+J">J. J. Back</a>, <a href="/search/physics?searchtype=author&query=Barker%2C+G">G. Barker</a>, <a href="/search/physics?searchtype=author&query=Baussan%2C+E">E. Baussan</a>, <a href="/search/physics?searchtype=author&query=Bayes%2C+R">R. Bayes</a>, <a href="/search/physics?searchtype=author&query=Bhadra%2C+S">S. Bhadra</a>, <a href="/search/physics?searchtype=author&query=Blackmore%2C+V">V. Blackmore</a>, <a href="/search/physics?searchtype=author&query=Blondel%2C+A">A. Blondel</a>, <a href="/search/physics?searchtype=author&query=Bogacz%2C+S+A">S. A. Bogacz</a>, <a href="/search/physics?searchtype=author&query=Booth%2C+C">C. Booth</a>, <a href="/search/physics?searchtype=author&query=Boyd%2C+S+B">S. B. Boyd</a>, <a href="/search/physics?searchtype=author&query=Bravar%2C+A">A. Bravar</a>, <a href="/search/physics?searchtype=author&query=Brice%2C+S+J">S. J. Brice</a>, <a href="/search/physics?searchtype=author&query=Bross%2C+A+D">A. D. Bross</a>, <a href="/search/physics?searchtype=author&query=Cadoux%2C+F">F. Cadoux</a>, <a href="/search/physics?searchtype=author&query=Cease%2C+H">H. Cease</a>, <a href="/search/physics?searchtype=author&query=Cervera%2C+A">A. Cervera</a>, <a href="/search/physics?searchtype=author&query=Cobb%2C+J">J. Cobb</a>, <a href="/search/physics?searchtype=author&query=Colling%2C+D">D. Colling</a>, <a href="/search/physics?searchtype=author&query=Coloma%2C+P">P. Coloma</a>, <a href="/search/physics?searchtype=author&query=Coney%2C+L">L. Coney</a>, <a href="/search/physics?searchtype=author&query=Dobbs%2C+A">A. Dobbs</a> , et al. (88 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1308.6822v1-abstract-short" style="display: inline;"> The nuSTORM facility has been designed to deliver beams of electron neutrinos and muon neutrinos (and their anti-particles) from the decay of a stored muon beam with a central momentum of 3.8 GeV/c and a momentum acceptance of 10%. The facility is unique in that it will: 1. Allow searches for sterile neutrinos of exquisite sensitivity to be carried out; 2. Serve future long- and short-baseline neu… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1308.6822v1-abstract-full').style.display = 'inline'; document.getElementById('1308.6822v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1308.6822v1-abstract-full" style="display: none;"> The nuSTORM facility has been designed to deliver beams of electron neutrinos and muon neutrinos (and their anti-particles) from the decay of a stored muon beam with a central momentum of 3.8 GeV/c and a momentum acceptance of 10%. The facility is unique in that it will: 1. Allow searches for sterile neutrinos of exquisite sensitivity to be carried out; 2. Serve future long- and short-baseline neutrino-oscillation programs by providing definitive measurements of electron neutrino and muon neutrino scattering cross sections off nuclei with percent-level precision; and 3. Constitutes the crucial first step in the development of muon accelerators as a powerful new technique for particle physics. The document describes the facility in detail and demonstrates its physics capabilities. This document was submitted to the Fermilab Physics Advisory Committee in consideration for Stage I approval. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1308.6822v1-abstract-full').style.display = 'none'; document.getElementById('1308.6822v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 31 July, 2013; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> August 2013. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1306.5009">arXiv:1306.5009</a> <span> [<a href="https://arxiv.org/pdf/1306.5009">pdf</a>, <a href="https://arxiv.org/format/1306.5009">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Lattice">hep-lat</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Theory">nucl-th</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Accelerator Physics">physics.acc-ph</span> </div> </div> <p class="title is-5 mathjax"> Project X: Physics Opportunities </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Kronfeld%2C+A+S">Andreas S. Kronfeld</a>, <a href="/search/physics?searchtype=author&query=Tschirhart%2C+R+S">Robert S. Tschirhart</a>, <a href="/search/physics?searchtype=author&query=Al-Binni%2C+U">Usama Al-Binni</a>, <a href="/search/physics?searchtype=author&query=Altmannshofer%2C+W">Wolfgang Altmannshofer</a>, <a href="/search/physics?searchtype=author&query=Ankenbrandt%2C+C">Charles Ankenbrandt</a>, <a href="/search/physics?searchtype=author&query=Babu%2C+K">Kaladi Babu</a>, <a href="/search/physics?searchtype=author&query=Banerjee%2C+S">Sunanda Banerjee</a>, <a href="/search/physics?searchtype=author&query=Bass%2C+M">Matthew Bass</a>, <a href="/search/physics?searchtype=author&query=Batell%2C+B">Brian Batell</a>, <a href="/search/physics?searchtype=author&query=Baxter%2C+D+V">David V. Baxter</a>, <a href="/search/physics?searchtype=author&query=Berezhiani%2C+Z">Zurab Berezhiani</a>, <a href="/search/physics?searchtype=author&query=Bergevin%2C+M">Marc Bergevin</a>, <a href="/search/physics?searchtype=author&query=Bernstein%2C+R">Robert Bernstein</a>, <a href="/search/physics?searchtype=author&query=Bhattacharya%2C+S">Sudeb Bhattacharya</a>, <a href="/search/physics?searchtype=author&query=Bishai%2C+M">Mary Bishai</a>, <a href="/search/physics?searchtype=author&query=Blum%2C+T">Thomas Blum</a>, <a href="/search/physics?searchtype=author&query=Bogacz%2C+S+A">S. Alex Bogacz</a>, <a href="/search/physics?searchtype=author&query=Brice%2C+S+J">Stephen J. Brice</a>, <a href="/search/physics?searchtype=author&query=Brod%2C+J">Joachim Brod</a>, <a href="/search/physics?searchtype=author&query=Bross%2C+A">Alan Bross</a>, <a href="/search/physics?searchtype=author&query=Buchoff%2C+M">Michael Buchoff</a>, <a href="/search/physics?searchtype=author&query=Burgess%2C+T+W">Thomas W. Burgess</a>, <a href="/search/physics?searchtype=author&query=Carena%2C+M">Marcela Carena</a>, <a href="/search/physics?searchtype=author&query=Castellanos%2C+L+A">Luis A. Castellanos</a>, <a href="/search/physics?searchtype=author&query=Chattopadhyay%2C+S">Subhasis Chattopadhyay</a> , et al. (111 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1306.5009v3-abstract-short" style="display: inline;"> Part 2 of "Project X: Accelerator Reference Design, Physics Opportunities, Broader Impacts". In this Part, we outline the particle-physics program that can be achieved with Project X, a staged superconducting linac for intensity-frontier particle physics. Topics include neutrino physics, kaon physics, muon physics, electric dipole moments, neutron-antineutron oscillations, new light particles, had… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1306.5009v3-abstract-full').style.display = 'inline'; document.getElementById('1306.5009v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1306.5009v3-abstract-full" style="display: none;"> Part 2 of "Project X: Accelerator Reference Design, Physics Opportunities, Broader Impacts". In this Part, we outline the particle-physics program that can be achieved with Project X, a staged superconducting linac for intensity-frontier particle physics. Topics include neutrino physics, kaon physics, muon physics, electric dipole moments, neutron-antineutron oscillations, new light particles, hadron structure, hadron spectroscopy, and lattice-QCD calculations. Part 1 is available as arXiv:1306.5022 [physics.acc-ph] and Part 3 is available as arXiv:1306.5024 [physics.acc-ph]. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1306.5009v3-abstract-full').style.display = 'none'; document.getElementById('1306.5009v3-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 1 October, 2016; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 20 June, 2013; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> June 2013. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">209 pp. with many figures; prepared in part for the DPF Community Summer Study; v2 corrects typos (including one author surname), adds an author, and conforms with the version being printed; v3 includes two more chapter authors in full list at the top</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> FERMILAB-TM-2557; ANL/PHY-13/2; BNL-101116-2013-BC/81834; JLAB-ACP-13-1725; LBNL-6334E; PNNL-22523; UASLP-IF-13-001; SLAC-R-1029 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1305.1419">arXiv:1305.1419</a> <span> [<a href="https://arxiv.org/pdf/1305.1419">pdf</a>, <a href="https://arxiv.org/format/1305.1419">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Accelerator Physics">physics.acc-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> </div> </div> <p class="title is-5 mathjax"> Neutrinos from Stored Muons nuSTORM: Expression of Interest </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Adey%2C+D">D. Adey</a>, <a href="/search/physics?searchtype=author&query=Agarwalla%2C+S+K">S. K. Agarwalla</a>, <a href="/search/physics?searchtype=author&query=Ankenbrandt%2C+C+M">C. M. Ankenbrandt</a>, <a href="/search/physics?searchtype=author&query=Asfandiyarov%2C+R">R. Asfandiyarov</a>, <a href="/search/physics?searchtype=author&query=Back%2C+J+J">J. J. Back</a>, <a href="/search/physics?searchtype=author&query=Barker%2C+G">G. Barker</a>, <a href="/search/physics?searchtype=author&query=Baussan%2C+E">E. Baussan</a>, <a href="/search/physics?searchtype=author&query=Bayes%2C+R">R. Bayes</a>, <a href="/search/physics?searchtype=author&query=Bhadra%2C+S">S. Bhadra</a>, <a href="/search/physics?searchtype=author&query=Blackmore%2C+V">V. Blackmore</a>, <a href="/search/physics?searchtype=author&query=Blondel%2C+A">A. Blondel</a>, <a href="/search/physics?searchtype=author&query=Bogacz%2C+S+A">S. A. Bogacz</a>, <a href="/search/physics?searchtype=author&query=Booth%2C+C">C. Booth</a>, <a href="/search/physics?searchtype=author&query=Boyd%2C+S+B">S. B. Boyd</a>, <a href="/search/physics?searchtype=author&query=Bravar%2C+A">A. Bravar</a>, <a href="/search/physics?searchtype=author&query=Brice%2C+S+J">S. J. Brice</a>, <a href="/search/physics?searchtype=author&query=Bross%2C+A+D">A. D. Bross</a>, <a href="/search/physics?searchtype=author&query=Cadoux%2C+F">F. Cadoux</a>, <a href="/search/physics?searchtype=author&query=Cease%2C+H">H. Cease</a>, <a href="/search/physics?searchtype=author&query=Cervera%2C+A">A. Cervera</a>, <a href="/search/physics?searchtype=author&query=Cobb%2C+J">J. Cobb</a>, <a href="/search/physics?searchtype=author&query=Colling%2C+D">D. Colling</a>, <a href="/search/physics?searchtype=author&query=Coney%2C+L">L. Coney</a>, <a href="/search/physics?searchtype=author&query=Dobbs%2C+A">A. Dobbs</a>, <a href="/search/physics?searchtype=author&query=Dobson%2C+J">J. Dobson</a> , et al. (84 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1305.1419v1-abstract-short" style="display: inline;"> The nuSTORM facility has been designed to deliver beams of electron and muon neutrinos from the decay of a stored muon beam with a central momentum of 3.8 GeV/c and a momentum spread of 10%. The facility is unique in that it will: serve the future long- and short-baseline neutrino-oscillation programmes by providing definitive measurements of electron-neutrino- and muon-neutrino-nucleus cross sect… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1305.1419v1-abstract-full').style.display = 'inline'; document.getElementById('1305.1419v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1305.1419v1-abstract-full" style="display: none;"> The nuSTORM facility has been designed to deliver beams of electron and muon neutrinos from the decay of a stored muon beam with a central momentum of 3.8 GeV/c and a momentum spread of 10%. The facility is unique in that it will: serve the future long- and short-baseline neutrino-oscillation programmes by providing definitive measurements of electron-neutrino- and muon-neutrino-nucleus cross sections with percent-level precision; allow searches for sterile neutrinos of exquisite sensitivity to be carried out; and constitute the essential first step in the incremental development of muon accelerators as a powerful new technique for particle physics. Of the world's proton-accelerator laboratories, only CERN and FNAL have the infrastructure required to mount nuSTORM. Since no siting decision has yet been taken, the purpose of this Expression of Interest (EoI) is to request the resources required to: investigate in detail how nuSTORM could be implemented at CERN; and develop options for decisive European contributions to the nuSTORM facility and experimental programme wherever the facility is sited. The EoI defines a two-year programme culminating in the delivery of a Technical Design Report. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1305.1419v1-abstract-full').style.display = 'none'; document.getElementById('1305.1419v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 7 May, 2013; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 2013. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">59 pages; 24 figures; 5 tables</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> CERN-SPSC-2013-015 / SPSC-EOI-009 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1208.2827">arXiv:1208.2827</a> <span> [<a href="https://arxiv.org/pdf/1208.2827">pdf</a>, <a href="https://arxiv.org/ps/1208.2827">ps</a>, <a href="https://arxiv.org/format/1208.2827">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Accelerator Physics">physics.acc-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> </div> </div> <p class="title is-5 mathjax"> SAPPHiRE: a Small Gamma-Gamma Higgs Factory </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Bogacz%2C+S+A">S. A. Bogacz</a>, <a href="/search/physics?searchtype=author&query=Ellis%2C+J">J. Ellis</a>, <a href="/search/physics?searchtype=author&query=Lusito%2C+L">L. Lusito</a>, <a href="/search/physics?searchtype=author&query=Schulte%2C+D">D. Schulte</a>, <a href="/search/physics?searchtype=author&query=Takahashi%2C+T">T. Takahashi</a>, <a href="/search/physics?searchtype=author&query=Velasco%2C+M">M. Velasco</a>, <a href="/search/physics?searchtype=author&query=Zanetti%2C+M">M. Zanetti</a>, <a href="/search/physics?searchtype=author&query=Zimmermann%2C+F">F. Zimmermann</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1208.2827v1-abstract-short" style="display: inline;"> A new particle with mass ~ 125 GeV that resembles the Higgs boson has recently been discovered by ATLAS and CMS. We propose a low-energy gamma-gamma collider as a cost- and time-efficient option for a Higgs factory capable of studying this particle in detail. In the past, this option has been suggested as a possible application of the CLIC two-beam accelerator technology (the CLIC Higgs Experiment… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1208.2827v1-abstract-full').style.display = 'inline'; document.getElementById('1208.2827v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1208.2827v1-abstract-full" style="display: none;"> A new particle with mass ~ 125 GeV that resembles the Higgs boson has recently been discovered by ATLAS and CMS. We propose a low-energy gamma-gamma collider as a cost- and time-efficient option for a Higgs factory capable of studying this particle in detail. In the past, this option has been suggested as a possible application of the CLIC two-beam accelerator technology (the CLIC Higgs Experiment, CLICHE) or as an option for the ILC. Here we propose a design based on a pair of \sim 10 GeV recirculating Linacs (Small Accelerator for Photon-Photon Higgs production using Recirculating Electrons, SAPPHiRE) similar in design to those proposed for the LHeC. We present parameters for the e- beams and sketch a laser backscattering system capable of producing a gamma-gamma peak luminosity of 0.36 \times 10^34/cm2/s with E_CM (gamma-gamma) \sim 125 GeV. A gamma-gamma collider with such a luminosity could be used to measure accurately the mass, bbar, WW\ast, and gamma-gamma decays of the Higgs boson. We also comment on possible synergies with other projects such as LHeC, the ILC or CLIC, and on other physics prospects in gamma-gamma and e-gamma collisions. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1208.2827v1-abstract-full').style.display = 'none'; document.getElementById('1208.2827v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 14 August, 2012; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> August 2012. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">13 pages, 7 eps figures, Submitted to the European Particle Physics Strategy Preparatory Group</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1207.5526">arXiv:1207.5526</a> <span> [<a href="https://arxiv.org/pdf/1207.5526">pdf</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Accelerator Physics">physics.acc-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1088/1748-0221/5/10/P10010">10.1088/1748-0221/5/10/P10010 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Betatron motion with coupling of horizontal and vertical degrees of freedom </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Lebedev%2C+V+A">V. A. Lebedev</a>, <a href="/search/physics?searchtype=author&query=Bogacz%2C+S+A">S. A. Bogacz</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1207.5526v1-abstract-short" style="display: inline;"> Presently, there are two most frequently used parameterizations of linear x-y coupled motion used in the accelerator physics. They are the Edwards-Teng and Mais-Ripken parameterizations. The article is devoted to an analysis of close relationship between the two representations, thus adding a clarity to their physical meaning. It also discusses the relationship between the Eigen-vectors, the beta-… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1207.5526v1-abstract-full').style.display = 'inline'; document.getElementById('1207.5526v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1207.5526v1-abstract-full" style="display: none;"> Presently, there are two most frequently used parameterizations of linear x-y coupled motion used in the accelerator physics. They are the Edwards-Teng and Mais-Ripken parameterizations. The article is devoted to an analysis of close relationship between the two representations, thus adding a clarity to their physical meaning. It also discusses the relationship between the Eigen-vectors, the beta-functions, second order moments and the bi-linear form representing the particle ellipsoid in the 4D phase space. Then, it considers a further development of Mais-Ripken parameterization where the particle motion is described by 10 parameters: four beta-functions, four alpha-functions and two betatron phase advances. In comparison with Edwards-Teng parameterization the chosen parameterization has an advantage that it works equally well for analysis of coupled betatron motion in circular accelerators and in transfer lines. Considered relationship between second order moments, Eigen-vectors and beta-functions can be useful in interpreting tracking results and experimental data. As an example, the developed formalism is applied to the FNAL electron cooler and Derbenev's vertex-to-plane adapter. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1207.5526v1-abstract-full').style.display = 'none'; document.getElementById('1207.5526v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 23 July, 2012; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> July 2012. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">24 pp</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> FERMILAB-PUB-10-383-AD </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> JINST 5 (2010) P10010 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1206.0294">arXiv:1206.0294</a> <span> [<a href="https://arxiv.org/pdf/1206.0294">pdf</a>, <a href="https://arxiv.org/format/1206.0294">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> </div> </div> <p class="title is-5 mathjax"> nuSTORM: Neutrinos from STORed Muons </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Kyberd%2C+P">P. Kyberd</a>, <a href="/search/physics?searchtype=author&query=Smith%2C+D+R">D. R. Smith</a>, <a href="/search/physics?searchtype=author&query=Coney%2C+L">L. Coney</a>, <a href="/search/physics?searchtype=author&query=Pascoli%2C+S">S. Pascoli</a>, <a href="/search/physics?searchtype=author&query=Ankenbrandt%2C+C">C. Ankenbrandt</a>, <a href="/search/physics?searchtype=author&query=Brice%2C+S+J">S. J. Brice</a>, <a href="/search/physics?searchtype=author&query=Bross%2C+A+D">A. D. Bross</a>, <a href="/search/physics?searchtype=author&query=Cease%2C+H">H. Cease</a>, <a href="/search/physics?searchtype=author&query=Kopp%2C+J">J. Kopp</a>, <a href="/search/physics?searchtype=author&query=Mokhov%2C+N">N. Mokhov</a>, <a href="/search/physics?searchtype=author&query=Morfin%2C+J">J. Morfin</a>, <a href="/search/physics?searchtype=author&query=Neuffer%2C+D">D. Neuffer</a>, <a href="/search/physics?searchtype=author&query=Popovic%2C+M">M. Popovic</a>, <a href="/search/physics?searchtype=author&query=Rubinov%2C+P">P. Rubinov</a>, <a href="/search/physics?searchtype=author&query=Striganov%2C+S">S. Striganov</a>, <a href="/search/physics?searchtype=author&query=Blondel%2C+A">A. Blondel</a>, <a href="/search/physics?searchtype=author&query=Bravar%2C+A">A. Bravar</a>, <a href="/search/physics?searchtype=author&query=Noah%2C+E">E. Noah</a>, <a href="/search/physics?searchtype=author&query=Bayes%2C+R">R. Bayes</a>, <a href="/search/physics?searchtype=author&query=Soler%2C+F+J+P">F. J. P. Soler</a>, <a href="/search/physics?searchtype=author&query=Dobbs%2C+A">A. Dobbs</a>, <a href="/search/physics?searchtype=author&query=Long%2C+K">K. Long</a>, <a href="/search/physics?searchtype=author&query=Pasternak%2C+J">J. Pasternak</a>, <a href="/search/physics?searchtype=author&query=Santos%2C+E">E. Santos</a>, <a href="/search/physics?searchtype=author&query=Wascko%2C+M+O">M. O. Wascko</a> , et al. (13 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1206.0294v1-abstract-short" style="display: inline;"> The results of LSND and MiniBooNE, along with the recent papers on a possible reactor neutrino flux anomaly give tantalizing hints of new physics. Models beyond the neutrino-SM have been developed to explain these results and involve one or more additional neutrinos that are non-interacting or "sterile." Neutrino beams produced from the decay of muons in a racetrack-like decay ring provide a power… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1206.0294v1-abstract-full').style.display = 'inline'; document.getElementById('1206.0294v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1206.0294v1-abstract-full" style="display: none;"> The results of LSND and MiniBooNE, along with the recent papers on a possible reactor neutrino flux anomaly give tantalizing hints of new physics. Models beyond the neutrino-SM have been developed to explain these results and involve one or more additional neutrinos that are non-interacting or "sterile." Neutrino beams produced from the decay of muons in a racetrack-like decay ring provide a powerful way to study this potential new physics. In this Letter of Intent, we describe a facility, nuSTORM, "Neutrinos from STORed Muons," and an appropriate far detector for neutrino oscillation searches at short baseline. We present sensitivity plots that indicated that this experimental approach can provide over 10 sigma confirmation or rejection of the LSND/MinBooNE results. In addition we indicate how the facility can be used to make precision neutrino interaction cross section measurements important to the next generation of long-baseline neutrino oscillation experiments. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1206.0294v1-abstract-full').style.display = 'none'; document.getElementById('1206.0294v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 1 June, 2012; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> June 2012. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> Fermilab P-1028 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/physics/0511092">arXiv:physics/0511092</a> <span> [<a href="https://arxiv.org/pdf/physics/0511092">pdf</a>, <a href="https://arxiv.org/ps/physics/0511092">ps</a>, <a href="https://arxiv.org/format/physics/0511092">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Accelerator Physics">physics.acc-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevSTAB.9.011001">10.1103/PhysRevSTAB.9.011001 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> A Cost-Effective Design for a Neutrino Factory </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Berg%2C+J+S">J. S. Berg</a>, <a href="/search/physics?searchtype=author&query=Bogacz%2C+S+A">S. A. Bogacz</a>, <a href="/search/physics?searchtype=author&query=Caspi%2C+S">S. Caspi</a>, <a href="/search/physics?searchtype=author&query=Cobb%2C+J">J. Cobb</a>, <a href="/search/physics?searchtype=author&query=Fernow%2C+R+C">R. C. Fernow</a>, <a href="/search/physics?searchtype=author&query=Gallardo%2C+J+C">J. C. Gallardo</a>, <a href="/search/physics?searchtype=author&query=Kahn%2C+S">S. Kahn</a>, <a href="/search/physics?searchtype=author&query=Kirk%2C+H">H. Kirk</a>, <a href="/search/physics?searchtype=author&query=Neuffer%2C+D">D. Neuffer</a>, <a href="/search/physics?searchtype=author&query=Palmer%2C+R+B">R. B. Palmer</a>, <a href="/search/physics?searchtype=author&query=Paul%2C+K">K. Paul</a>, <a href="/search/physics?searchtype=author&query=Witte%2C+H">H. Witte</a>, <a href="/search/physics?searchtype=author&query=Zisman%2C+M">M. Zisman</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="physics/0511092v1-abstract-short" style="display: inline;"> There have been active efforts in the U.S., Europe, and Japan on the design of a Neutrino Factory. This type of facility produces intense beams of neutrinos from the decay of muons in a high energy storage ring. In the U.S., a second detailed Feasibility Study (FS2) for a Neutrino Factory was completed in 2001. Since that report was published, new ideas in bunching, cooling and acceleration of m… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('physics/0511092v1-abstract-full').style.display = 'inline'; document.getElementById('physics/0511092v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="physics/0511092v1-abstract-full" style="display: none;"> There have been active efforts in the U.S., Europe, and Japan on the design of a Neutrino Factory. This type of facility produces intense beams of neutrinos from the decay of muons in a high energy storage ring. In the U.S., a second detailed Feasibility Study (FS2) for a Neutrino Factory was completed in 2001. Since that report was published, new ideas in bunching, cooling and acceleration of muon beams have been developed. We have incorporated these ideas into a new facility design, which we designate as Study 2B (ST2B), that should lead to significant cost savings over the FS2 design. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('physics/0511092v1-abstract-full').style.display = 'none'; document.getElementById('physics/0511092v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 10 November, 2005; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 2005. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">46 pages, 38 figures; to be submitted to Physical Review Special Topics: Accelerators and Beams</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> BNL-75054-2005-JA; MUC-NOTES-327 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys.Rev.ST Accel.Beams 9:011001,2006 </p> </li> </ol> <div class="is-hidden-tablet">  <span class="help" style="display: inline-block;"><a href="https://github.com/arXiv/arxiv-search/releases">Search v0.5.6 released 2020-02-24</a>  </span> </div> </div> </main> <footer> <div class="columns is-desktop" role="navigation" aria-label="Secondary">  <div class="column"> <div class="columns"> <div class="column"> <ul class="nav-spaced"> <li><a href="https://info.arxiv.org/about">About</a></li> <li><a href="https://info.arxiv.org/help">Help</a></li> </ul> </div> <div class="column"> <ul class="nav-spaced"> <li> <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512" class="icon filter-black" role="presentation"><title>contact arXiv</title><desc>Click here to contact arXiv</desc><path d="M502.3 190.8c3.9-3.1 9.7-.2 9.7 4.7V400c0 26.5-21.5 48-48 48H48c-26.5 0-48-21.5-48-48V195.6c0-5 5.7-7.8 9.7-4.7 22.4 17.4 52.1 39.5 154.1 113.6 21.1 15.4 56.7 47.8 92.2 47.6 35.7.3 72-32.8 92.3-47.6 102-74.1 131.6-96.3 154-113.7zM256 320c23.2.4 56.6-29.2 73.4-41.4 132.7-96.3 142.8-104.7 173.4-128.7 5.8-4.5 9.2-11.5 9.2-18.9v-19c0-26.5-21.5-48-48-48H48C21.5 64 0 85.5 0 112v19c0 7.4 3.4 14.3 9.2 18.9 30.6 23.9 40.7 32.4 173.4 128.7 16.8 12.2 50.2 41.8 73.4 41.4z"/></svg> <a href="https://info.arxiv.org/help/contact.html"> Contact</a> </li> <li> <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512" class="icon filter-black" role="presentation"><title>subscribe to arXiv mailings</title><desc>Click here to subscribe</desc><path d="M476 3.2L12.5 270.6c-18.1 10.4-15.8 35.6 2.2 43.2L121 358.4l287.3-253.2c5.5-4.9 13.3 2.6 8.6 8.3L176 407v80.5c0 23.6 28.5 32.9 42.5 15.8L282 426l124.6 52.2c14.2 6 30.4-2.9 33-18.2l72-432C515 7.8 493.3-6.8 476 3.2z"/></svg> <a href="https://info.arxiv.org/help/subscribe"> Subscribe</a> </li> </ul> </div> </div> </div>   <div class="column"> <div class="columns"> <div class="column"> <ul class="nav-spaced"> <li><a href="https://info.arxiv.org/help/license/index.html">Copyright</a></li> <li><a href="https://info.arxiv.org/help/policies/privacy_policy.html">Privacy Policy</a></li> </ul> </div> <div class="column sorry-app-links"> <ul class="nav-spaced"> <li><a href="https://info.arxiv.org/help/web_accessibility.html">Web Accessibility Assistance</a></li> <li> <p class="help"> <a class="a11y-main-link" href="https://status.arxiv.org" target="_blank">arXiv Operational Status <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 256 512" class="icon filter-dark_grey" role="presentation"><path d="M224.3 273l-136 136c-9.4 9.4-24.6 9.4-33.9 0l-22.6-22.6c-9.4-9.4-9.4-24.6 0-33.9l96.4-96.4-96.4-96.4c-9.4-9.4-9.4-24.6 0-33.9L54.3 103c9.4-9.4 24.6-9.4 33.9 0l136 136c9.5 9.4 9.5 24.6.1 34z"/></svg></a><br> Get status notifications via <a class="is-link" href="https://subscribe.sorryapp.com/24846f03/email/new" target="_blank"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512" class="icon filter-black" role="presentation"><path d="M502.3 190.8c3.9-3.1 9.7-.2 9.7 4.7V400c0 26.5-21.5 48-48 48H48c-26.5 0-48-21.5-48-48V195.6c0-5 5.7-7.8 9.7-4.7 22.4 17.4 52.1 39.5 154.1 113.6 21.1 15.4 56.7 47.8 92.2 47.6 35.7.3 72-32.8 92.3-47.6 102-74.1 131.6-96.3 154-113.7zM256 320c23.2.4 56.6-29.2 73.4-41.4 132.7-96.3 142.8-104.7 173.4-128.7 5.8-4.5 9.2-11.5 9.2-18.9v-19c0-26.5-21.5-48-48-48H48C21.5 64 0 85.5 0 112v19c0 7.4 3.4 14.3 9.2 18.9 30.6 23.9 40.7 32.4 173.4 128.7 16.8 12.2 50.2 41.8 73.4 41.4z"/></svg>email</a> or <a class="is-link" href="https://subscribe.sorryapp.com/24846f03/slack/new" target="_blank"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 448 512" class="icon filter-black" role="presentation"><path d="M94.12 315.1c0 25.9-21.16 47.06-47.06 47.06S0 341 0 315.1c0-25.9 21.16-47.06 47.06-47.06h47.06v47.06zm23.72 0c0-25.9 21.16-47.06 47.06-47.06s47.06 21.16 47.06 47.06v117.84c0 25.9-21.16 47.06-47.06 47.06s-47.06-21.16-47.06-47.06V315.1zm47.06-188.98c-25.9 0-47.06-21.16-47.06-47.06S139 32 164.9 32s47.06 21.16 47.06 47.06v47.06H164.9zm0 23.72c25.9 0 47.06 21.16 47.06 47.06s-21.16 47.06-47.06 47.06H47.06C21.16 243.96 0 222.8 0 196.9s21.16-47.06 47.06-47.06H164.9zm188.98 47.06c0-25.9 21.16-47.06 47.06-47.06 25.9 0 47.06 21.16 47.06 47.06s-21.16 47.06-47.06 47.06h-47.06V196.9zm-23.72 0c0 25.9-21.16 47.06-47.06 47.06-25.9 0-47.06-21.16-47.06-47.06V79.06c0-25.9 21.16-47.06 47.06-47.06 25.9 0 47.06 21.16 47.06 47.06V196.9zM283.1 385.88c25.9 0 47.06 21.16 47.06 47.06 0 25.9-21.16 47.06-47.06 47.06-25.9 0-47.06-21.16-47.06-47.06v-47.06h47.06zm0-23.72c-25.9 0-47.06-21.16-47.06-47.06 0-25.9 21.16-47.06 47.06-47.06h117.84c25.9 0 47.06 21.16 47.06 47.06 0 25.9-21.16 47.06-47.06 47.06H283.1z"/></svg>slack</a> </p> </li> </ul> </div> </div> </div>  </div> </footer> <script src="https://static.arxiv.org/static/base/1.0.0a5/js/member_acknowledgement.js"></script> </body> </html>

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