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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/2001.00999">arXiv:2001.00999</a> <span> [<a href="https://arxiv.org/pdf/2001.00999">pdf</a>, <a href="https://arxiv.org/format/2001.00999">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="Accelerator Physics">physics.acc-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</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/PhysRevD.101.032004">10.1103/PhysRevD.101.032004 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> A limit on the anisotropy of the one-way maximum attainable speed of the electron </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Bergan%2C+W">W. Bergan</a>, <a href="/search/physics?searchtype=author&query=Forster%2C+M+J">M. J. Forster</a>, <a href="/search/physics?searchtype=author&query=Khachatryan%2C+V">V. Khachatryan</a>, <a href="/search/physics?searchtype=author&query=Rider%2C+N">N. Rider</a>, <a href="/search/physics?searchtype=author&query=Rubin%2C+D+L">D. L. Rubin</a>, <a href="/search/physics?searchtype=author&query=Vlahovic%2C+B">B. Vlahovic</a>, <a href="/search/physics?searchtype=author&query=Wojtsekhowski%2C+B">B. Wojtsekhowski</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="2001.00999v3-abstract-short" style="display: inline;"> We report here the first experimental result for the anisotropy of the one-way maximum attainable speed of the electron, $\vec{螖c_{1,e}}$, obtained via the study of a sidereal time dependence of a difference between the electron and positron beam momenta in the CESR storage ring at Cornell University. At 95 percent confidence, an upper limit for the component of $螖\vec {c}_{1,e}/c$ perpendicular t… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2001.00999v3-abstract-full').style.display = 'inline'; document.getElementById('2001.00999v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2001.00999v3-abstract-full" style="display: none;"> We report here the first experimental result for the anisotropy of the one-way maximum attainable speed of the electron, $\vec{螖c_{1,e}}$, obtained via the study of a sidereal time dependence of a difference between the electron and positron beam momenta in the CESR storage ring at Cornell University. At 95 percent confidence, an upper limit for the component of $螖\vec {c}_{1,e}/c$ perpendicular to Earth's rotational axis is found to be $5.5 \times 10^{-15}$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2001.00999v3-abstract-full').style.display = 'none'; document.getElementById('2001.00999v3-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> 19 January, 2020; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 23 November, 2019; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> January 2020. </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">6 pages, 5 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. D 101, 032004 (2020) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1801.10183">arXiv:1801.10183</a> <span> [<a href="https://arxiv.org/pdf/1801.10183">pdf</a>, <a href="https://arxiv.org/format/1801.10183">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/10.1088/1748-0221/13/03/T03006">10.1088/1748-0221/13/03/T03006 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Measurement Techniques for Low Emittance Tuning and Beam Dynamics at CESR </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Billing%2C+M+G">M. G. Billing</a>, <a href="/search/physics?searchtype=author&query=Dobbins%2C+J+A">J. A. Dobbins</a>, <a href="/search/physics?searchtype=author&query=Forster%2C+M+J">M. J. Forster</a>, <a href="/search/physics?searchtype=author&query=Kreinick%2C+D+L">D. L. Kreinick</a>, <a href="/search/physics?searchtype=author&query=Meller%2C+R+E">R. E. Meller</a>, <a href="/search/physics?searchtype=author&query=Peterson%2C+D+P">D. P. Peterson</a>, <a href="/search/physics?searchtype=author&query=Ramirez%2C+G+A">G. A. Ramirez</a>, <a href="/search/physics?searchtype=author&query=Rendina%2C+M+C">M. C. Rendina</a>, <a href="/search/physics?searchtype=author&query=Rider%2C+N+T">N. T. Rider</a>, <a href="/search/physics?searchtype=author&query=Sagan%2C+D+C">D. C. Sagan</a>, <a href="/search/physics?searchtype=author&query=Shanks%2C+J">J. Shanks</a>, <a href="/search/physics?searchtype=author&query=Sikora%2C+J+P">J. P. Sikora</a>, <a href="/search/physics?searchtype=author&query=Stedinger%2C+M+G">M. G. Stedinger</a>, <a href="/search/physics?searchtype=author&query=Strohman%2C+C+R">C. R. Strohman</a>, <a href="/search/physics?searchtype=author&query=Williams%2C+H+A">H. A. Williams</a>, <a href="/search/physics?searchtype=author&query=Palmer%2C+M+A">M. A. Palmer</a>, <a href="/search/physics?searchtype=author&query=Holtzapple%2C+R+L">R. L. Holtzapple</a>, <a href="/search/physics?searchtype=author&query=Flanagan%2C+J">J. Flanagan</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="1801.10183v2-abstract-short" style="display: inline;"> After operating as a High Energy Physics electron-positron collider, the Cornell Electron-positron Storage Ring (CESR) has been converted to become a dedicated synchrotron light source for the Cornell High Energy Synchrotron Source (CHESS). Over the course of several years CESR was adapted for accelerator physics research as a test accelerator, capable of studying topics relevant to future damping… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1801.10183v2-abstract-full').style.display = 'inline'; document.getElementById('1801.10183v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1801.10183v2-abstract-full" style="display: none;"> After operating as a High Energy Physics electron-positron collider, the Cornell Electron-positron Storage Ring (CESR) has been converted to become a dedicated synchrotron light source for the Cornell High Energy Synchrotron Source (CHESS). Over the course of several years CESR was adapted for accelerator physics research as a test accelerator, capable of studying topics relevant to future damping rings, colliders and light sources. Initially some specific topics were targeted for accelerator physic research with the storage ring in this mode, labeled CesrTA. These topics included 1) tuning techniques to produce low emittance beams, 2) the study of electron cloud (EC) development in a storage ring and 3) intra-beam scattering effects. The complete conversion of CESR to CesrTA occurred over a several year period, described elsewhere. A number of specific instruments were developed for CesrTA. Much of the pre-existing instrumentation was modified to accommodate the scope of these studies and these are described in a companion paper. To complete this research, a number of procedures were developed or modified, often requiring coordinated measurements among different instruments. This paper provides an overview of types of measurements employed for the study of beam dynamics during the operation of CesrTA. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1801.10183v2-abstract-full').style.display = 'none'; document.getElementById('1801.10183v2-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 March, 2018; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 30 January, 2018; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> January 2018. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1710.01844">arXiv:1710.01844</a> <span> [<a href="https://arxiv.org/pdf/1710.01844">pdf</a>, <a href="https://arxiv.org/format/1710.01844">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/10.1088/1748-0221/12/11/T11006">10.1088/1748-0221/12/11/T11006 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Instrumentation for the Study of Low Emittance Tuning and Beam Dynamics at CESR </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Billing%2C+M+G">M. G. Billing</a>, <a href="/search/physics?searchtype=author&query=Dobbins%2C+J+A">J. A. Dobbins</a>, <a href="/search/physics?searchtype=author&query=Forster%2C+M+J">M. J. Forster</a>, <a href="/search/physics?searchtype=author&query=Kreinick%2C+D+L">D. L. Kreinick</a>, <a href="/search/physics?searchtype=author&query=Meller%2C+R+E">R. E. Meller</a>, <a href="/search/physics?searchtype=author&query=Peterson%2C+D+P">D. P. Peterson</a>, <a href="/search/physics?searchtype=author&query=Ramirez%2C+G+A">G. A. Ramirez</a>, <a href="/search/physics?searchtype=author&query=Rendina%2C+M+C">M. C. Rendina</a>, <a href="/search/physics?searchtype=author&query=Rider%2C+N+T">N. T. Rider</a>, <a href="/search/physics?searchtype=author&query=Sagan%2C+D+C">D. C. Sagan</a>, <a href="/search/physics?searchtype=author&query=Shanks%2C+J">J. Shanks</a>, <a href="/search/physics?searchtype=author&query=Sikora%2C+J+P">J. P. Sikora</a>, <a href="/search/physics?searchtype=author&query=Stedinger%2C+M+G">M. G. Stedinger</a>, <a href="/search/physics?searchtype=author&query=Strohman%2C+C+R">C. R. Strohman</a>, <a href="/search/physics?searchtype=author&query=Williams%2C+H+A">H. A. Williams</a>, <a href="/search/physics?searchtype=author&query=Palmer%2C+M+A">M. A. Palmer</a>, <a href="/search/physics?searchtype=author&query=Holtzapple%2C+R+L">R. L. Holtzapple</a>, <a href="/search/physics?searchtype=author&query=Flanagan%2C+J">J. Flanagan</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="1710.01844v2-abstract-short" style="display: inline;"> The Cornell Electron-positron Storage Ring (CESR) has been converted from a High Energy Physics electron-positron collider to operate as a dedicated synchrotron light source for the Cornell High Energy Synchrotron Source (CHESS) and to conduct accelerator physics research as a test accelerator, capable of studying topics relevant to future damping rings, colliders and light sources. Some of the sp… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1710.01844v2-abstract-full').style.display = 'inline'; document.getElementById('1710.01844v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1710.01844v2-abstract-full" style="display: none;"> The Cornell Electron-positron Storage Ring (CESR) has been converted from a High Energy Physics electron-positron collider to operate as a dedicated synchrotron light source for the Cornell High Energy Synchrotron Source (CHESS) and to conduct accelerator physics research as a test accelerator, capable of studying topics relevant to future damping rings, colliders and light sources. Some of the specific topics that were targeted for the initial phase of operation of the storage ring in this mode for CESR as a Test Accelerator (CesrTA) included 1) tuning techniques to produce low emittance beams, 2) the study of electron cloud development in a storage ring and 3) intra-beam scattering effects. The complete conversion of CESR to CesrTA occurred over a several year period, described elsewhere. In addition to instrumentation for the storage ring, which was created for CesrTA, existing instrumentation was modified to facilitate the entire range of investigations to support these studies. Procedures were developed, often requiring coordinated measurements among different instruments. This paper describes the instruments utilized for the study of beam dynamics during the operation of CesrTA. The treatment of these instruments will remain fairly general in this paper as it focusses on an overview of the instruments themselves. Their interaction and inter-relationships during sequences of observations is found in a companion paper describing the associated measurement techniques. More detailed descriptions and detailed operational performance for some of the instrumentation may be found elsewhere and these will be referenced in the related sections of this paper. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1710.01844v2-abstract-full').style.display = 'none'; document.getElementById('1710.01844v2-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 November, 2017; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 4 October, 2017; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2017. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1706.00360">arXiv:1706.00360</a> <span> [<a href="https://arxiv.org/pdf/1706.00360">pdf</a>, <a href="https://arxiv.org/format/1706.00360">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/10.1088/1748-0221/12/09/T09005">10.1088/1748-0221/12/09/T09005 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Beam Position Monitoring System at CESR </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Billing%2C+M+G">M. G. Billing</a>, <a href="/search/physics?searchtype=author&query=Bergan%2C+W+F">W. F. Bergan</a>, <a href="/search/physics?searchtype=author&query=Forster%2C+M+J">M. J. Forster</a>, <a href="/search/physics?searchtype=author&query=Meller%2C+R+E">R. E. Meller</a>, <a href="/search/physics?searchtype=author&query=Rendina%2C+M+C">M. C. Rendina</a>, <a href="/search/physics?searchtype=author&query=Rider%2C+N+T">N. T. Rider</a>, <a href="/search/physics?searchtype=author&query=Sagan%2C+D+C">D. C. Sagan</a>, <a href="/search/physics?searchtype=author&query=Shanks%2C+J">J. Shanks</a>, <a href="/search/physics?searchtype=author&query=Sikora%2C+J+P">J. P. Sikora</a>, <a href="/search/physics?searchtype=author&query=Stedinger%2C+M+G">M. G. Stedinger</a>, <a href="/search/physics?searchtype=author&query=Strohman%2C+C+R">C. R. Strohman</a>, <a href="/search/physics?searchtype=author&query=Palmer%2C+M+A">M. A. Palmer</a>, <a href="/search/physics?searchtype=author&query=Holtzapple%2C+R+L">R. L. Holtzapple</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="1706.00360v3-abstract-short" style="display: inline;"> The Cornell Electron-positron Storage Ring (CESR) has been converted from a High Energy Physics electron-positron collider to operate as a dedicated synchrotron light source for the Cornell High Energy Synchrotron Source (CHESS) and to conduct accelerator physics research as a test accelerator, capable of studying topics relevant to future damping rings, colliders and light sources. Some of the sp… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1706.00360v3-abstract-full').style.display = 'inline'; document.getElementById('1706.00360v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1706.00360v3-abstract-full" style="display: none;"> The Cornell Electron-positron Storage Ring (CESR) has been converted from a High Energy Physics electron-positron collider to operate as a dedicated synchrotron light source for the Cornell High Energy Synchrotron Source (CHESS) and to conduct accelerator physics research as a test accelerator, capable of studying topics relevant to future damping rings, colliders and light sources. Some of the specific topics that were targeted for the initial phase of operation of the storage ring in this mode, labeled CesrTA (CESR as a Test Accelerator), included 1) tuning techniques to produce low emittance beams, 2) the study of electron cloud development in a storage ring and 3) intra-beam scattering effects. The complete conversion of CESR to CesrTA occurred over a several year period, described elsewhere. As a part of this conversion the CESR beam position monitoring (CBPM) system was completely upgraded to provide the needed instrumental capabilities for these studies. This paper describes the new CBPM system hardware, its function and representative measurements performed by the upgraded system. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1706.00360v3-abstract-full').style.display = 'none'; document.getElementById('1706.00360v3-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 August, 2017; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 1 June, 2017; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> June 2017. </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 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