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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/2212.06793">arXiv:2212.06793</a> <span> [<a href="https://arxiv.org/pdf/2212.06793">pdf</a>, <a href="https://arxiv.org/format/2212.06793">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"> A New Longitudinal Diagnostics System for CERN's Antiproton Machines </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Angoletta%2C+M+E">M. E. Angoletta</a>, <a href="/search/physics?searchtype=author&query=Barrientos%2C+D">D. Barrientos</a>, <a href="/search/physics?searchtype=author&query=Bielawski%2C+B">B. Bielawski</a>, <a href="/search/physics?searchtype=author&query=Jaussi%2C+M">M. Jaussi</a>, <a href="/search/physics?searchtype=author&query=Niccolini%2C+M">M. Niccolini</a>, <a href="/search/physics?searchtype=author&query=Rey%2C+A">A. Rey</a>, <a href="/search/physics?searchtype=author&query=Soderen%2C+M">M. Soderen</a>, <a href="/search/physics?searchtype=author&query=Suminski%2C+M">M. Suminski</a>, <a href="/search/physics?searchtype=author&query=Molendijk%2C+J">J. Molendijk</a>, <a href="/search/physics?searchtype=author&query=Myklebust%2C+V+R">V. R. Myklebust</a>, <a href="/search/physics?searchtype=author&query=Gonzalez%2C+S+N">S. Novel Gonzalez</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="2212.06793v2-abstract-short" style="display: inline;"> A new powerful longitudinal diagnostics is being developed for the two CERN's antiproton machines, the Antiproton Decelerator (AD) and the Extra Low ENergy ANtiproton (ELENA) ring. The longitudinal diagnostics receives data from the Low-Level Radiofrequency (LLRF) system via optical fiber. Real time processing of gigabit data-streams is enabled by its computational resources and real-time operatin… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2212.06793v2-abstract-full').style.display = 'inline'; document.getElementById('2212.06793v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2212.06793v2-abstract-full" style="display: none;"> A new powerful longitudinal diagnostics is being developed for the two CERN's antiproton machines, the Antiproton Decelerator (AD) and the Extra Low ENergy ANtiproton (ELENA) ring. The longitudinal diagnostics receives data from the Low-Level Radiofrequency (LLRF) system via optical fiber. Real time processing of gigabit data-streams is enabled by its computational resources and real-time operating system. Measurement of intensity, bunch length and turn-by-turn bunch profiles are available for bunched beams. Intensity, momentum spread and average frequency will soon be measured for debunched beams. The system will provide essential input to setup and monitor RF and cooling systems. It will also be used by operators to monitor each machine's performances and the overall efficiency of the antiproton chain. This paper shows the data acquisition/processing mechanism and preliminary bunched beam results for AD. Next steps and plans for exporting the system to other CERN machines equipped with the same LLRF system are also mentioned. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2212.06793v2-abstract-full').style.display = 'none'; document.getElementById('2212.06793v2-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 December, 2022; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 13 December, 2022; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 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">Poster presented at LLRF Workshop 2022 (LLRF2022, arXiv:2208.13680)</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> LLRF2022/69 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2206.06040">arXiv:2206.06040</a> <span> [<a href="https://arxiv.org/pdf/2206.06040">pdf</a>, <a href="https://arxiv.org/format/2206.06040">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="Plasma Physics">physics.plasm-ph</span> </div> </div> <p class="title is-5 mathjax"> The AWAKE Run 2 programme and beyond </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Gschwendtner%2C+E">Edda Gschwendtner</a>, <a href="/search/physics?searchtype=author&query=Lotov%2C+K">Konstantin Lotov</a>, <a href="/search/physics?searchtype=author&query=Muggli%2C+P">Patric Muggli</a>, <a href="/search/physics?searchtype=author&query=Wing%2C+M">Matthew Wing</a>, <a href="/search/physics?searchtype=author&query=Agnello%2C+R">Riccardo Agnello</a>, <a href="/search/physics?searchtype=author&query=Ahdida%2C+C+C">Claudia Christina Ahdida</a>, <a href="/search/physics?searchtype=author&query=Goncalves%2C+M+C+A">Maria Carolina Amoedo Goncalves</a>, <a href="/search/physics?searchtype=author&query=Andrebe%2C+Y">Yanis Andrebe</a>, <a href="/search/physics?searchtype=author&query=Apsimon%2C+O">Oznur Apsimon</a>, <a href="/search/physics?searchtype=author&query=Apsimon%2C+R">Robert Apsimon</a>, <a href="/search/physics?searchtype=author&query=Arnesano%2C+J+M">Jordan Matias Arnesano</a>, <a href="/search/physics?searchtype=author&query=Bachmann%2C+A">Anna-Maria Bachmann</a>, <a href="/search/physics?searchtype=author&query=Barrientos%2C+D">Diego Barrientos</a>, <a href="/search/physics?searchtype=author&query=Batsch%2C+F">Fabian Batsch</a>, <a href="/search/physics?searchtype=author&query=Bencini%2C+V">Vittorio Bencini</a>, <a href="/search/physics?searchtype=author&query=Bergamaschi%2C+M">Michele Bergamaschi</a>, <a href="/search/physics?searchtype=author&query=Blanchard%2C+P">Patrick Blanchard</a>, <a href="/search/physics?searchtype=author&query=Burrows%2C+P+N">Philip Nicholas Burrows</a>, <a href="/search/physics?searchtype=author&query=Buttensch%C3%B6n%2C+B">Birger Buttensch枚n</a>, <a href="/search/physics?searchtype=author&query=Caldwell%2C+A">Allen Caldwell</a>, <a href="/search/physics?searchtype=author&query=Chappell%2C+J">James Chappell</a>, <a href="/search/physics?searchtype=author&query=Chevallay%2C+E">Eric Chevallay</a>, <a href="/search/physics?searchtype=author&query=Chung%2C+M">Moses Chung</a>, <a href="/search/physics?searchtype=author&query=Cooke%2C+D+A">David Andrew Cooke</a>, <a href="/search/physics?searchtype=author&query=Damerau%2C+H">Heiko Damerau</a> , et al. (77 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="2206.06040v1-abstract-short" style="display: inline;"> Plasma wakefield acceleration is a promising technology to reduce the size of particle accelerators. Use of high energy protons to drive wakefields in plasma has been demonstrated during Run 1 of the AWAKE programme at CERN. Protons of energy 400 GeV drove wakefields that accelerated electrons to 2 GeV in under 10 m of plasma. The AWAKE collaboration is now embarking on Run 2 with the main aims to… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2206.06040v1-abstract-full').style.display = 'inline'; document.getElementById('2206.06040v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2206.06040v1-abstract-full" style="display: none;"> Plasma wakefield acceleration is a promising technology to reduce the size of particle accelerators. Use of high energy protons to drive wakefields in plasma has been demonstrated during Run 1 of the AWAKE programme at CERN. Protons of energy 400 GeV drove wakefields that accelerated electrons to 2 GeV in under 10 m of plasma. The AWAKE collaboration is now embarking on Run 2 with the main aims to demonstrate stable accelerating gradients of 0.5-1 GV/m, preserve emittance of the electron bunches during acceleration and develop plasma sources scalable to 100s of metres and beyond. By the end of Run 2, the AWAKE scheme should be able to provide electron beams for particle physics experiments and several possible experiments have already been evaluated. This article summarises the programme of AWAKE Run 2 and how it will be achieved as well as the possible application of the AWAKE scheme to novel particle physics experiments. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2206.06040v1-abstract-full').style.display = 'none'; document.getElementById('2206.06040v1-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> 13 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">21 pages, 8 figures. Submitted to Symmetry journal</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1809.04478">arXiv:1809.04478</a> <span> [<a href="https://arxiv.org/pdf/1809.04478">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="Plasma Physics">physics.plasm-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/PhysRevLett.122.054802">10.1103/PhysRevLett.122.054802 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Experimental observation of proton bunch modulation in a plasma, at varying plasma densities </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Adli%2C+E">E. Adli</a>, <a href="/search/physics?searchtype=author&query=Ahuja%2C+A">A. Ahuja</a>, <a href="/search/physics?searchtype=author&query=Apsimon%2C+O">O. Apsimon</a>, <a href="/search/physics?searchtype=author&query=Apsimon%2C+R">R. Apsimon</a>, <a href="/search/physics?searchtype=author&query=Bachmann%2C+A+-">A. -M. Bachmann</a>, <a href="/search/physics?searchtype=author&query=Barrientos%2C+D">D. Barrientos</a>, <a href="/search/physics?searchtype=author&query=Barros%2C+M+M">M. M. Barros</a>, <a href="/search/physics?searchtype=author&query=Batkiewicz%2C+J">J. Batkiewicz</a>, <a href="/search/physics?searchtype=author&query=Batsch%2C+F">F. Batsch</a>, <a href="/search/physics?searchtype=author&query=Bauche%2C+J">J. Bauche</a>, <a href="/search/physics?searchtype=author&query=Olsen%2C+V+K+B">V. K. Berglyd Olsen</a>, <a href="/search/physics?searchtype=author&query=Bernardini%2C+M">M. Bernardini</a>, <a href="/search/physics?searchtype=author&query=Biskup%2C+B">B. Biskup</a>, <a href="/search/physics?searchtype=author&query=Boccardi%2C+A">A. Boccardi</a>, <a href="/search/physics?searchtype=author&query=Bogey%2C+T">T. Bogey</a>, <a href="/search/physics?searchtype=author&query=Bohl%2C+T">T. Bohl</a>, <a href="/search/physics?searchtype=author&query=Bracco%2C+C">C. Bracco</a>, <a href="/search/physics?searchtype=author&query=Braunm%C3%BCller%2C+F">F. Braunm眉ller</a>, <a href="/search/physics?searchtype=author&query=Burger%2C+S">S. Burger</a>, <a href="/search/physics?searchtype=author&query=Burt%2C+G">G. Burt</a>, <a href="/search/physics?searchtype=author&query=Bustamante%2C+S">S. Bustamante</a>, <a href="/search/physics?searchtype=author&query=Buttensch%C3%B6n%2C+B">B. Buttensch枚n</a>, <a href="/search/physics?searchtype=author&query=Caldwell%2C+A">A. Caldwell</a>, <a href="/search/physics?searchtype=author&query=Cascella%2C+M">M. Cascella</a>, <a href="/search/physics?searchtype=author&query=Chappell%2C+J">J. Chappell</a> , et al. (87 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="1809.04478v2-abstract-short" style="display: inline;"> We give direct experimental evidence for the observation of the full transverse self-modulation of a relativistic proton bunch propagating through a dense plasma. The bunch exits the plasma with a density modulation resulting from radial wakefield effects with a period reciprocal to the plasma frequency. We show that the modulation is seeded by using an intense laser pulse co-propagating with the… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1809.04478v2-abstract-full').style.display = 'inline'; document.getElementById('1809.04478v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1809.04478v2-abstract-full" style="display: none;"> We give direct experimental evidence for the observation of the full transverse self-modulation of a relativistic proton bunch propagating through a dense plasma. The bunch exits the plasma with a density modulation resulting from radial wakefield effects with a period reciprocal to the plasma frequency. We show that the modulation is seeded by using an intense laser pulse co-propagating with the proton bunch which creates a relativistic ionization front within the bunch. We show by varying the plasma density over one order of magnitude that the modulation period scales with the expected dependence on the plasma density. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1809.04478v2-abstract-full').style.display = 'none'; document.getElementById('1809.04478v2-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 April, 2019; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 12 September, 2018; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 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">4 figures, AWAKE collaboration paper, Submitted to PRL</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. Lett. 122, 054802 (2019) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1808.09759">arXiv:1808.09759</a> <span> [<a href="https://arxiv.org/pdf/1808.09759">pdf</a>, <a href="https://arxiv.org/format/1808.09759">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="Plasma Physics">physics.plasm-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/10.1038/s41586-018-0485-4">10.1038/s41586-018-0485-4 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Acceleration of electrons in the plasma wakefield of a proton bunch </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=The+AWAKE+Collaboration"> The AWAKE Collaboration</a>, <a href="/search/physics?searchtype=author&query=Adli%2C+E">E. Adli</a>, <a href="/search/physics?searchtype=author&query=Ahuja%2C+A">A. Ahuja</a>, <a href="/search/physics?searchtype=author&query=Apsimon%2C+O">O. Apsimon</a>, <a href="/search/physics?searchtype=author&query=Apsimon%2C+R">R. Apsimon</a>, <a href="/search/physics?searchtype=author&query=Bachmann%2C+A+-">A. -M. Bachmann</a>, <a href="/search/physics?searchtype=author&query=Barrientos%2C+D">D. Barrientos</a>, <a href="/search/physics?searchtype=author&query=Batsch%2C+F">F. Batsch</a>, <a href="/search/physics?searchtype=author&query=Bauche%2C+J">J. Bauche</a>, <a href="/search/physics?searchtype=author&query=Olsen%2C+V+K+B">V. K. Berglyd Olsen</a>, <a href="/search/physics?searchtype=author&query=Bernardini%2C+M">M. Bernardini</a>, <a href="/search/physics?searchtype=author&query=Bohl%2C+T">T. Bohl</a>, <a href="/search/physics?searchtype=author&query=Bracco%2C+C">C. Bracco</a>, <a href="/search/physics?searchtype=author&query=Braunmueller%2C+F">F. Braunmueller</a>, <a href="/search/physics?searchtype=author&query=Burt%2C+G">G. Burt</a>, <a href="/search/physics?searchtype=author&query=Buttenschoen%2C+B">B. Buttenschoen</a>, <a href="/search/physics?searchtype=author&query=Caldwell%2C+A">A. Caldwell</a>, <a href="/search/physics?searchtype=author&query=Cascella%2C+M">M. Cascella</a>, <a href="/search/physics?searchtype=author&query=Chappell%2C+J">J. Chappell</a>, <a href="/search/physics?searchtype=author&query=Chevallay%2C+E">E. Chevallay</a>, <a href="/search/physics?searchtype=author&query=Chung%2C+M">M. Chung</a>, <a href="/search/physics?searchtype=author&query=Cooke%2C+D">D. Cooke</a>, <a href="/search/physics?searchtype=author&query=Damerau%2C+H">H. Damerau</a>, <a href="/search/physics?searchtype=author&query=Deacon%2C+L">L. Deacon</a>, <a href="/search/physics?searchtype=author&query=Deubner%2C+L+H">L. H. Deubner</a> , et al. (69 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="1808.09759v2-abstract-short" style="display: inline;"> High energy particle accelerators have been crucial in providing a deeper understanding of fundamental particles and the forces that govern their interactions. In order to increase the energy or reduce the size of the accelerator, new acceleration schemes need to be developed. Plasma wakefield acceleration, in which the electrons in a plasma are excited, leading to strong electric fields, is one s… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1808.09759v2-abstract-full').style.display = 'inline'; document.getElementById('1808.09759v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1808.09759v2-abstract-full" style="display: none;"> High energy particle accelerators have been crucial in providing a deeper understanding of fundamental particles and the forces that govern their interactions. In order to increase the energy or reduce the size of the accelerator, new acceleration schemes need to be developed. Plasma wakefield acceleration, in which the electrons in a plasma are excited, leading to strong electric fields, is one such promising novel acceleration technique. Pioneering experiments have shown that an intense laser pulse or electron bunch traversing a plasma, drives electric fields of 10s GV/m and above. These values are well beyond those achieved in conventional RF accelerators which are limited to ~0.1 GV/m. A limitation of laser pulses and electron bunches is their low stored energy, which motivates the use of multiple stages to reach very high energies. The use of proton bunches is compelling, as they have the potential to drive wakefields and accelerate electrons to high energy in a single accelerating stage. The long proton bunches currently available can be used, as they undergo self-modulation, a particle-plasma interaction which longitudinally splits the bunch into a series of high density microbunches, which then act resonantly to create large wakefields. The AWAKE experiment at CERN uses intense bunches of protons, each of energy 400 GeV, with a total bunch energy of 19 kJ, to drive a wakefield in a 10 m long plasma. Bunches of electrons are injected into the wakefield formed by the proton microbunches. This paper presents measurements of electrons accelerated up to 2 GeV at AWAKE. This constitutes the first demonstration of proton-driven plasma wakefield acceleration. The potential for this scheme to produce very high energy electron bunches in a single accelerating stage means that the results shown here are a significant step towards the development of future high energy particle accelerators. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1808.09759v2-abstract-full').style.display = 'none'; document.getElementById('1808.09759v2-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> 11 October, 2018; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 29 August, 2018; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> August 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">7 pages, 4 figures. Updated acknowledgements and one reference</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1803.09041">arXiv:1803.09041</a> <span> [<a href="https://arxiv.org/pdf/1803.09041">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 1 GHz RF Trigger Unit implemented in FPGA logic </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Barrientos%2C+D">D. Barrientos</a>, <a href="/search/physics?searchtype=author&query=Molendijk%2C+J">J. Molendijk</a>, <a href="/search/physics?searchtype=author&query=Hagmann%2C+G">G. Hagmann</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="1803.09041v1-abstract-short" style="display: inline;"> Applications of Trigger Units (TU) can be found in almost all accelerators at CERN. The requirements in terms of operating frequencies, configuration or modes of operation change from one application to another, how-ever, in terms of design requirements for the Trigger Unit, the operating frequency is probably the most demanding one. In this work, we present an implementation of a Trigger Unit alm… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1803.09041v1-abstract-full').style.display = 'inline'; document.getElementById('1803.09041v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1803.09041v1-abstract-full" style="display: none;"> Applications of Trigger Units (TU) can be found in almost all accelerators at CERN. The requirements in terms of operating frequencies, configuration or modes of operation change from one application to another, how-ever, in terms of design requirements for the Trigger Unit, the operating frequency is probably the most demanding one. In this work, we present an implementation of a Trigger Unit almost fully embedded in the FPGA logic operating at a maximum frequency of 1 GHz using the internal serializer/deserializer circuitry to simplify the timing constraints of the design. This implementation allows easy reconfiguration of the module and the development of new modes of operation, which are described in this paper. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1803.09041v1-abstract-full').style.display = 'none'; document.getElementById('1803.09041v1-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 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">Poster presented at LLRF Workshop 2017 (LLRF2017, arXiv:1803.07677)</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> LLRF2017/P-65 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1803.09039">arXiv:1803.09039</a> <span> [<a href="https://arxiv.org/pdf/1803.09039">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"> Commissioning and performance of a phase-compensated optical link for the AWAKE experiment at CERN </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Barrientos%2C+D">D. Barrientos</a>, <a href="/search/physics?searchtype=author&query=Molendijk%2C+J">J. Molendijk</a>, <a href="/search/physics?searchtype=author&query=Butterworth%2C+A">A. Butterworth</a>, <a href="/search/physics?searchtype=author&query=Damerau%2C+H">H. Damerau</a>, <a href="/search/physics?searchtype=author&query=H%C3%B6fle%2C+W">W. H枚fle</a>, <a href="/search/physics?searchtype=author&query=Jaussi%2C+M">M. Jaussi</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="1803.09039v1-abstract-short" style="display: inline;"> In this work, we analyze the performance of the solution adopted for the compensation of the phase drift of a 3 km optical fiber link used for the AWAKE experiment at CERN. The link is devoted to transmit the reference signals used to synchronize the SPS beam with the experiment to have a fixed phase relation, regardless of the external conditions of the electronics and the link itself. The system… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1803.09039v1-abstract-full').style.display = 'inline'; document.getElementById('1803.09039v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1803.09039v1-abstract-full" style="display: none;"> In this work, we analyze the performance of the solution adopted for the compensation of the phase drift of a 3 km optical fiber link used for the AWAKE experiment at CERN. The link is devoted to transmit the reference signals used to synchronize the SPS beam with the experiment to have a fixed phase relation, regardless of the external conditions of the electronics and the link itself. The system has been operating for more than a year without observed drift in the beam phases. Specific measurements have proven that the jitter introduced by the system is lower than 0.6 ps and the maximum phase drift of the link is at the picosecond level. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1803.09039v1-abstract-full').style.display = 'none'; document.getElementById('1803.09039v1-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 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">Poster presented at LLRF Workshop 2017 (LLRF2017, arXiv:1803.07677)</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> LLRF2017/P-64 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1406.3925">arXiv:1406.3925</a> <span> [<a href="https://arxiv.org/pdf/1406.3925">pdf</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</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/10.1109/TNS.2015.2480243">10.1109/TNS.2015.2480243 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Performance of the Fully Digital FPGA-based Front-End Electronics for the GALILEO Array </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Barrientos%2C+D">D. Barrientos</a>, <a href="/search/physics?searchtype=author&query=Bellato%2C+M">M. Bellato</a>, <a href="/search/physics?searchtype=author&query=Bazzacco%2C+D">D. Bazzacco</a>, <a href="/search/physics?searchtype=author&query=Bortolato%2C+D">D. Bortolato</a>, <a href="/search/physics?searchtype=author&query=Cocconi%2C+P">P. Cocconi</a>, <a href="/search/physics?searchtype=author&query=Gadea%2C+A">A. Gadea</a>, <a href="/search/physics?searchtype=author&query=Gonz%C3%A1lez%2C+V">V. Gonz谩lez</a>, <a href="/search/physics?searchtype=author&query=Gulmini%2C+M">M. Gulmini</a>, <a href="/search/physics?searchtype=author&query=Isocrate%2C+R">R. Isocrate</a>, <a href="/search/physics?searchtype=author&query=Mengoni%2C+D">D. Mengoni</a>, <a href="/search/physics?searchtype=author&query=Pullia%2C+A">A. Pullia</a>, <a href="/search/physics?searchtype=author&query=Recchia%2C+F">F. Recchia</a>, <a href="/search/physics?searchtype=author&query=Rosso%2C+D">D. Rosso</a>, <a href="/search/physics?searchtype=author&query=Sanchis%2C+E">E. Sanchis</a>, <a href="/search/physics?searchtype=author&query=Toniolo%2C+N">N. Toniolo</a>, <a href="/search/physics?searchtype=author&query=Ur%2C+C+A">C. A. Ur</a>, <a href="/search/physics?searchtype=author&query=Valiente-Dob%C3%B3n%2C+J+J">J. J. Valiente-Dob贸n</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="1406.3925v1-abstract-short" style="display: inline;"> In this work we present the architecture and results of a fully digital Front End Electronics (FEE) read out system developed for the GALILEO array. The FEE system, developed in collaboration with the Advanced Gamma Tracking Array (AGATA) collaboration, is composed of three main blocks: preamplifiers, digitizers and preprocessing electronics. The slow control system contains a custom Linux driver,… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1406.3925v1-abstract-full').style.display = 'inline'; document.getElementById('1406.3925v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1406.3925v1-abstract-full" style="display: none;"> In this work we present the architecture and results of a fully digital Front End Electronics (FEE) read out system developed for the GALILEO array. The FEE system, developed in collaboration with the Advanced Gamma Tracking Array (AGATA) collaboration, is composed of three main blocks: preamplifiers, digitizers and preprocessing electronics. The slow control system contains a custom Linux driver, a dynamic library and a server implementing network services. The digital processing of the data from the GALILEO germanium detectors has demonstrated the capability to achieve an energy resolution of 1.53 per mil at an energy of 1.33 MeV. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1406.3925v1-abstract-full').style.display = 'none'; document.getElementById('1406.3925v1-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> 16 June, 2014; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> June 2014. </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 pages, 6 figures, preprint version of IEEE Transactions on Nuclear Science paper submitted for the 19th IEEE Real Time Conference</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1111.5731">arXiv:1111.5731</a> <span> [<a href="https://arxiv.org/pdf/1111.5731">pdf</a>, <a href="https://arxiv.org/format/1111.5731">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</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/10.1016/j.nima.2011.11.081">10.1016/j.nima.2011.11.081 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> AGATA - Advanced Gamma Tracking Array </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Akkoyun%2C+S">S. Akkoyun</a>, <a href="/search/physics?searchtype=author&query=Algora%2C+A">A. Algora</a>, <a href="/search/physics?searchtype=author&query=Alikhani%2C+B">B. Alikhani</a>, <a href="/search/physics?searchtype=author&query=Ameil%2C+F">F. Ameil</a>, <a href="/search/physics?searchtype=author&query=de+Angelis%2C+G">G. de Angelis</a>, <a href="/search/physics?searchtype=author&query=Arnold%2C+L">L. Arnold</a>, <a href="/search/physics?searchtype=author&query=Astier%2C+A">A. Astier</a>, <a href="/search/physics?searchtype=author&query=Ata%C3%A7%2C+A">A. Ata莽</a>, <a href="/search/physics?searchtype=author&query=Aubert%2C+Y">Y. Aubert</a>, <a href="/search/physics?searchtype=author&query=Aufranc%2C+C">C. Aufranc</a>, <a href="/search/physics?searchtype=author&query=Austin%2C+A">A. Austin</a>, <a href="/search/physics?searchtype=author&query=Aydin%2C+S">S. Aydin</a>, <a href="/search/physics?searchtype=author&query=Azaiez%2C+F">F. Azaiez</a>, <a href="/search/physics?searchtype=author&query=Badoer%2C+S">S. Badoer</a>, <a href="/search/physics?searchtype=author&query=Balabanski%2C+D+L">D. L. Balabanski</a>, <a href="/search/physics?searchtype=author&query=Barrientos%2C+D">D. Barrientos</a>, <a href="/search/physics?searchtype=author&query=Baulieu%2C+G">G. Baulieu</a>, <a href="/search/physics?searchtype=author&query=Baumann%2C+R">R. Baumann</a>, <a href="/search/physics?searchtype=author&query=Bazzacco%2C+D">D. Bazzacco</a>, <a href="/search/physics?searchtype=author&query=Beck%2C+F+A">F. A. Beck</a>, <a href="/search/physics?searchtype=author&query=Beck%2C+T">T. Beck</a>, <a href="/search/physics?searchtype=author&query=Bednarczyk%2C+P">P. Bednarczyk</a>, <a href="/search/physics?searchtype=author&query=Bellato%2C+M">M. Bellato</a>, <a href="/search/physics?searchtype=author&query=Bentley%2C+M+A">M. A. Bentley</a>, <a href="/search/physics?searchtype=author&query=Benzoni%2C+G">G. Benzoni</a> , et al. (329 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="1111.5731v2-abstract-short" style="display: inline;"> The Advanced GAmma Tracking Array (AGATA) is a European project to develop and operate the next generation gamma-ray spectrometer. AGATA is based on the technique of gamma-ray energy tracking in electrically segmented high-purity germanium crystals. This technique requires the accurate determination of the energy, time and position of every interaction as a gamma ray deposits its energy within the… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1111.5731v2-abstract-full').style.display = 'inline'; document.getElementById('1111.5731v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1111.5731v2-abstract-full" style="display: none;"> The Advanced GAmma Tracking Array (AGATA) is a European project to develop and operate the next generation gamma-ray spectrometer. AGATA is based on the technique of gamma-ray energy tracking in electrically segmented high-purity germanium crystals. This technique requires the accurate determination of the energy, time and position of every interaction as a gamma ray deposits its energy within the detector volume. Reconstruction of the full interaction path results in a detector with very high efficiency and excellent spectral response. The realization of gamma-ray tracking and AGATA is a result of many technical advances. These include the development of encapsulated highly-segmented germanium detectors assembled in a triple cluster detector cryostat, an electronics system with fast digital sampling and a data acquisition system to process the data at a high rate. The full characterization of the crystals was measured and compared with detector-response simulations. This enabled pulse-shape analysis algorithms, to extract energy, time and position, to be employed. In addition, tracking algorithms for event reconstruction were developed. The first phase of AGATA is now complete and operational in its first physics campaign. In the future AGATA will be moved between laboratories in Europe and operated in a series of campaigns to take advantage of the different beams and facilities available to maximize its science output. The paper reviews all the achievements made in the AGATA project including all the necessary infrastructure to operate and support the spectrometer. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1111.5731v2-abstract-full').style.display = 'none'; document.getElementById('1111.5731v2-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> 17 September, 2012; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 24 November, 2011; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 2011. </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">This version contains a correction of a typing error in the caption of Fig. 2. The DOI to the article published in Nucl. Instr. 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