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DOI - JACoW-SRF2017-MOPB079
<!DOCTYPE html> <html lang="en"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <meta name="keywords" content="doi, conference, proceedings" /> <meta name="generator" content="copyright 2015-2018 Generated by JPSP version v=27.2= 05 Dec 2017 vrws on 2018-02-14 at 21:46" /> <meta name="author" content="volker rw schaa@gsi de" /> <link rel="stylesheet" type="text/css" href="../html/doi.css" /> <link rel="shortcut icon" href="../im0ges/favicon.ico" /> <link rel="icon" href="../im0ges/favicon_ani.gif" type="image/gif" /> <script src="../html/Hyphenator.js" type="text/javascript"></script> <script src="../html/en.js" type="text/javascript"></script> <script type="text/javascript">Hyphenator.config({remoteloading : false}); Hyphenator.run();</script> <meta name="citation_author" content="Mitchell, James" /> <meta name="citation_author" content="Burt, Graeme" /> <meta name="citation_author" content="Calaga, Rama" /> <meta name="citation_author" content="Shipman, Nicholas" /> <meta name="citation_author" content="Verd煤-Andr茅s, Silvia" /> <meta name="citation_author" content="Wu, Qiong" /> <meta name="citation_author" content="Xiao, Binping" /> <meta name="citation_date" content="2018/01" /> <meta name="citation_publication_date" content="2018/01/01" /> <meta name="citation_title" content="HOM Coupler Alterations for the LHC DQW Crab Cavity" /> <meta name="citation_publisher" content="JACOW, Geneva, Switzerland" /> <meta name="citation_firstpage" content="249" /> <meta name="citation_lastpage" content="253" /> <meta name="citation_doi" content="10.18429/JACoW-SRF2017-MOPB079" /> <meta name="citation_isbn" content="978-3-95450-191-5" /> <meta name="citation_keywords" content="ion, cavity, HOM, impedance, simulation" /> <meta name="citation_language" content="en" /> <meta name="citation_conference_title" content="18th Int. Conf. on RF Superconductivity (SRF'17), Lanzhou, China, July 17-21, 2017" /> <meta name="citation_pdf_url" content="http://jacow.org/srf2017/papers/mopb079.pdf" /> <meta name="DC.creator" content="Mitchell, James" /> <meta name="DC.creator" content="Burt, Graeme" /> <meta name="DC.creator" content="Calaga, Rama" /> <meta name="DC.creator" content="Shipman, Nicholas" /> <meta name="DC.creator" content="Verd煤-Andr茅s, Silvia" /> <meta name="DC.creator" content="Wu, Qiong" /> <meta name="DC.creator" content="Xiao, Binping" /> <meta name="DC.issued" content="meta_cit_date" /> <meta name="dcterms:issued" content="2018" /> <meta name="DC.title" content="HOM Coupler Alterations for the LHC DQW Crab Cavity" /> <meta name="DC.publisher" content="JACOW, Geneva, Switzerland" /> <meta name="DC.citation.spage" content="249" /> <meta name="DC.citation.epage" content="253" /> <meta name="DC:identifier" content="info:doi/10.18429/JACoW-SRF2017-MOPB079" /> <meta name="dcterms:isPartOf" content="urn:ISBN:978-3-95450-191-5" /> <meta name="DC.subject" content="ion, cavity, HOM, impedance, simulation" /> <meta name="citation_language" content="en" /> <meta name="dcterms:bibliographicCitation" content="18th Int. Conf. on RF Superconductivity (SRF'17), Lanzhou, China, July 17-21, 2017" /> <meta name="DC.identifier" content="http://jacow.org/srf2017/papers/mopb079.pdf" /> <title>DOI - JACoW-SRF2017-MOPB079</title> </head> <body> <a href="http://jacow.org"><img src="../im0ges/jacowheader.jpg" width="480" height="60" alt="JACoW logo" /></a> <h1>Joint Accelerator Conferences Website</h1> <p class="intro">The Joint Accelerator Conferences Website (<a href="http://jacow.org">JACoW</a>) is an international collaboration that publishes the proceedings of accelerator conferences held around the world.</p> <hr /> <div><span class="doiheader"><a href="http://jacow.org/srf2017/papers/mopb079.pdf">https://doi.org/10.18429/JACoW-SRF2017-MOPB079</a></span></div> <div> <table class="doitabledef"> <tr class="tablerow"> <td class="fieldgrp">Title</td> <td class="fieldhigh">HOM Coupler Alterations for the LHC DQW Crab Cavity</td> </tr> <tr class="tablerow"> <td class="fieldkey">Authors</td> <td class="datarow"> <ul> <li><span class="author_cl"><strong>J.A. Mitchell</strong></span><br /> Lancaster University, Lancaster, United Kingdom</li> <li><span class="author_cl">G. Burt, N.C. Shipman</span><br /> Cockcroft Institute, Lancaster University, Lancaster, United Kingdom</li> <li><span class="author_cl">R. Calaga</span><br /> CERN, Geneva, Switzerland</li> <li><span class="author_cl">S. Verdú-Andrés, Q. Wu, B. P. Xiao</span><br /> BNL, Upton, Long Island, New York, USA</li> </ul> </td> </tr> <tr class="tablerow"> <td class="fieldkey">Abstract</td> <td> <span class="abstract hyphenate jtext" lang="en">As part of the High Luminosity Large Hadron Collider (HL-LHC) project, 16 crab cavities are to be installed in the LHC in 2025. The two crab cavity designs are the Double Quarter Wave (DQW) and Radio Frequency Dipole (RFD). Preliminary beam tests in the Super Proton Synchrotron (SPS) are planned for both cavity types, with the DQW scheduled for testing in 2018. In reference to to Higher Order Mode (HOM) damping, the DQW has three identical on-cell HOM couplers. These HOM couplers provide a band-stop response at the frequency of the fundamental mode and act as a transmission path for the cavity HOMs. For the SPS cavity design, several geometric constraints exist. These give rise to dimensional limitations which in-turn impose limitations on the RF performance of the HOM couplers. As such, for the LHC assembly, the HOM coupler design is re-visited to take into account the relaxed geometric limitations, hence allowing the feasibility of an increased RF performance to be investigated. In addition to the RF performance, several geometric alterations were incorporated to ease manufacturing processes, tolerances and costs.</span> </td> </tr> <tr class="tablerow"> <td class="fieldkey">Paper</td> <td class="datarow">download <a href="http://jacow.org/srf2017/papers/mopb079.pdf" target="pdf">MOPB079.PDF</a> [1.704 MB / 5 pages]</td> </tr> <tr class="tablerow"> <td class="fieldkey">Poster</td> <td class="datarow">download <a href="http://jacow.org/srf2017/posters/mopb079_poster.pdf" target="pdf">MOPB079_POSTER.PDF</a> [2.038 MB]</td> </tr> <tr class="tablerow"> <td class="fieldkey">Export</td> <td class="datarow">download ※ <a href="../export/MOPB079-bib.htm" target="exp">BibTeX</a> ※ <a href="../export/MOPB079-tex.htm" target="exp"> LaTeX</a> ※ <a href="../export/MOPB079-txt.htm" target="exp">Text/Word</a> ※ <a href="../export/MOPB079-ris.htm" target="exp">RIS</a> ※ <a href="../export/MOPB079.xml" target="exp">EndNote</a></td> </tr> <tr class="tablerow"> <td class="fieldgrp">Conference</td> <td class="fieldhigh">SRF2017, Lanzhou, China</td> </tr> <tr class="tablerow"> <td class="fieldkey">Series</td> <td class="datarow">International Conference on RF Superconductivity (18th)</td> </tr> <tr class="tablerow"> <td class="fieldkey">Proceedings</td> <td class="datarow">Link to full <a href="http://jacow.org/srf2017/" target="pdf">SRF2017 Proccedings</a></td> </tr> <tr class="tablerow"> <td class="fieldkey">Session</td> <td class="datarow">Poster Session</td> </tr> <tr class="tablerow"> <td class="fieldkey">Date</td> <td class="datarow">17-Jul-17 14:00–17:00</td> </tr> <tr class="tablerow"> <td class="fieldkey">Main Classification</td> <td class="datarow">SRF Technology R&D</td> </tr> <tr class="tablerow"> <td class="fieldkey">Sub Classification</td> <td class="datarow">Ancillaries</td> </tr> <tr class="tablerow"> <td class="fieldkey">Keywords</td> <td class="datarow">ion, cavity, HOM, impedance, simulation</td> </tr> <tr class="tablerow"> <td class="fieldgrp">Publisher</td> <td class="fieldhigh">JACoW, Geneva, Switzerland</td> </tr> <tr class="tablerow"> <td class="fieldkey">Editors</td> <td class="datarow">Volker RW Schaa (GSI, Darmstadt, Germany); Yuan He (IMP, Lanzhou, China); Lu Li (IMP, Lanzhou, China); Ning Zhao (IHEP, Beijing, China)</td> </tr> <tr class="tablerow"> <td class="fieldkey">ISBN</td> <td class="datarow">978-3-95450-191-5</td> </tr> <tr class="tablerow"> <td class="fieldkey">Published</td> <td class="datarow">January 2018</td> </tr> <tr class="tablerow"> <td class="fieldkey">Copyright</td> <td class="datarow"> <table> <tr><td>Copyright © 2018 by JACoW, Geneva, Switzerland</td><td> </td> <td rowspan="2"><img src="../im0ges/ccby-88x31.png" width="88" height="31" alt="CC-BY Creative Commons License" /></td> </tr> <tr><td>cc <a href="https://creativecommons.org/licenses/by/3.0/">Creative Commons Attribution 3.0</a></td><td> </td> </tr> </table> </td> </table> </div> </body> </html>