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This paper presents a simple design proposal for application at CERN LHC. The preliminary design allows for a certain scalability of the number of modules, current flowing in the wire, and dimensions. It complies with two key requirements: (a) the use of a thin, bare metal wire that allows for movement as near to the beam as necessary while minimising interactions with beam particles and meeting the specified DC current target; and (b) a wire support that is both an electrical insulator and a thermal conductor (ceramic).A molybdenum wire, vacuum brazed on an aluminium nitride support, is proposed, and the design is conceptually proved through the realisation and extensive test of a demonstrator device. The wire brazing validation, as well as the system's heat management, which are the most critical aspects, are given particular regard. Sito, Leonardo; Rossi, Adriana; Bertarelli, Alessandro; Accettura, Carlotta; Carra, Federico; Motschmann, Fritz; Sterbini, Guido; Guardia Valenzuela, J; Gentini, Luca; Garlaschè, Marco; Guinchard, Michael; Sacristan De Frutos, Oscar; Hoell, Stefan; Papaphilippou, Yannis" /> <meta name="keywords" content="vacuum, injection, collider, luminosity, hadron, simulation" /> <script type="text/javascript" src="https://cds.cern.ch/js/jquery.min.js"></script>  <link rel="stylesheet" href="https://cds.cern.ch/img/webnews.css" type="text/css" />  <script type="text/javascript" src="https://cds.cern.ch/js/webnews.js?v=20131009"></script> <meta property="fb:app_id" content="137353533001720"/> <script type="text/x-mathjax-config"> MathJax.Hub.Config({ tex2jax: {inlineMath: [['$','$']], processEscapes: true}, showProcessingMessages: false, messageStyle: "none" }); </script> <script src="/MathJax/MathJax.js?config=TeX-AMS_CHTML" type="text/javascript"> </script>  <meta content="JACOW : Beam-beam long range compensator mechanical demonstrator" name="citation_title" /> <meta content="Sito, Leonardo" name="citation_author" /> <meta content="Bertarelli, Alessandro" name="citation_author" /> <meta content="Sacristan De Frutos, Oscar" name="citation_author" /> <meta content="Gentini, Luca" name="citation_author" /> <meta content="Garlaschè, Marco" name="citation_author" /> <meta content="Guinchard, Michael" name="citation_author" /> <meta content="Motschmann, Fritz" name="citation_author" /> <meta content="Carra, Federico" name="citation_author" /> <meta content="Hoell, Stefan" name="citation_author" /> <meta content="Sterbini, Guido" name="citation_author" /> <meta content="Rossi, Adriana" name="citation_author" /> <meta content="Guardia Valenzuela, J" name="citation_author" /> <meta content="Papaphilippou, Yannis" name="citation_author" /> <meta content="Accettura, Carlotta" name="citation_author" /> <meta content="10.18429/JACoW-IPAC2023-THPM015" name="citation_doi" /> <meta content="JACoW IPAC" name="citation_journal_title" /> <meta content="2023" name="citation_volume" /> <meta content="THPM015" name="citation_firstpage" /> <meta content="2023" name="citation_publication_date" /> <meta name="citation_online_date" content="2024/01/16"> <meta content="10.18429/JACoW-IPAC2023-THPM015" name="citation_doi" /> <meta name="citation_pdf_url" content="https://cds.cern.ch/record/2886519/files/document.pdf" />  <meta content="Beam-beam long range compensator mechanical demonstrator" property="og:title" /> <meta content="JACOW" property="og:title" /> <meta content="website" property="og:type" /> <meta content="website" property="og:type" /> <meta content="https://cds.cern.ch/record/2886519" property="og:url" /> <meta content="CERN Document Server" property="og:site_name" /> <meta content="JACOW" property="og:description" /> <meta content="Beam-Beam Long-Range Compensators employing current-carrying wires are considered as valuable options in hadron colliders to increase dynamic aperture at small crossing angles. This paper presents a simple design proposal for application at CERN LHC. The preliminary design allows for a certain scalability of the number of modules, current flowing in the wire, and dimensions. It complies with two key requirements: (a) the use of a thin, bare metal wire that allows for movement as near to the beam as necessary while minimising interactions with beam particles and meeting the specified DC current target; and (b) a wire support that is both an electrical insulator and a thermal conductor (ceramic).A molybdenum wire, vacuum brazed on an aluminium nitride support, is proposed, and the design is conceptually proved through the realisation and extensive test of a demonstrator device. 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var affiliation = $(this).data('affiliation') + '</br>'; var contribution = $(this).data('contribution') + '</br>'; $.magnificPopup.open({ items: { src: '<div id="ovelary-mathjax" class="overlay-white oc-content overlay-white-500">' + author + affiliation + contribution + '</div>', type: 'inline' }, callbacks: { open: function() { var div = document.getElementById("overlay-mathjax") MathJax.Hub.Queue(["Typeset", MathJax.Hub, div]); }, } }) }) }); </script> <tr><td class="formatRecordLabel"> Title </td><td style="padding-left:5px;"><b>Beam-beam long range compensator mechanical demonstrator</b></td></tr> <tr><td class="formatRecordLabel"><span style="white-space:nowrap;"> Author(s) </span> </td><td style="padding-left:5px;"> <script type="text/javascript"> function toggle_authors_visibility(){ var more = document.getElementById('more'); var link = document.getElementById('link'); var extension = document.getElementById('extension'); if (more.style.display=='none'){ more.style.display = ''; extension.style.display = 'none'; link.innerHTML = "Hide" } else { more.style.display = 'none'; extension.style.display = ''; link.innerHTML = "Show all 14 authors" } link.style.color = "rgb(204,0,0);" } function set_up(){ var extension = document.getElementById('extension'); extension.innerHTML = ""; toggle_authors_visibility(); } </script> <a name="show_hide" /><a href="https://cds.cern.ch/search?f=author&p=Sito%2C%20Leonardo&ln=en">Sito, Leonardo</a> (CERN ; Naples U.) ; <a href="https://cds.cern.ch/search?f=author&p=Rossi%2C%20Adriana&ln=en">Rossi, Adriana</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Bertarelli%2C%20Alessandro&ln=en">Bertarelli, Alessandro</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Accettura%2C%20Carlotta&ln=en">Accettura, Carlotta</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Carra%2C%20Federico&ln=en">Carra, Federico</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Motschmann%2C%20Fritz&ln=en">Motschmann, Fritz</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Sterbini%2C%20Guido&ln=en">Sterbini, Guido</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Guardia%20Valenzuela%2C%20J&ln=en">Guardia Valenzuela, J</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Gentini%2C%20Luca&ln=en">Gentini, Luca</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Garlasch%C3%A8%2C%20Marco&ln=en">Garlaschè, Marco</a> (CERN)<span id="more" style=""> ; <a href="https://cds.cern.ch/search?f=author&p=Guinchard%2C%20Michael&ln=en">Guinchard, Michael</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Sacristan%20De%20Frutos%2C%20Oscar&ln=en">Sacristan De Frutos, Oscar</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Hoell%2C%20Stefan&ln=en">Hoell, Stefan</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Papaphilippou%2C%20Yannis&ln=en">Papaphilippou, Yannis</a> (CERN)</span> <span id="extension"></span> <small><i><a id="link" href="#" onclick="toggle_authors_visibility()" style="color:rgb(204,0,0);"></a></i></small><script type="text/javascript">set_up()</script></td></tr> <tr><td class="formatRecordLabel"> Publication </td><td style="padding-left:5px;">2023</td></tr> <tr><td class="formatRecordLabel"> Number of pages </td><td style="padding-left:5px;">3</td></tr> <tr><td class="formatRecordLabel"> In: </td><td style="padding-left:5px;"><a href="http://dx.doi.org/10.18429/JACoW-IPAC2023-THPM015"><i>JACoW IPAC</i> 2023 (2023) THPM015</a> </a></td></tr> <tr><td class="formatRecordLabel"> In: </td><td style="padding-left:5px;"><a href="https://cds.cern.ch/record/2858945">14th International Particle Accelerator Conference (IPAC 2023)</a>, Venice, Italy, 7 - 12 May 2023, pp.THPM015</td></tr> <tr><td class="formatRecordLabel"> DOI </td><td style="padding-left:5px;"><a href="http://dx.doi.org/10.18429/JACoW-IPAC2023-THPM015" title="DOI" target="_blank">10.18429/JACoW-IPAC2023-THPM015</a> <tr><td class="formatRecordLabel"> Subject category </td><td style="padding-left:5px;">Accelerators and Storage Rings</td></tr> <tr><td class="formatRecordLabel"> Abstract </td><td style="padding-left:5px;">Beam-Beam Long-Range Compensators employing current-carrying wires are considered as valuable options in hadron colliders to increase dynamic aperture at small crossing angles. This paper presents a simple design proposal for application at CERN LHC. The preliminary design allows for a certain scalability of the number of modules, current flowing in the wire, and dimensions. It complies with two key requirements: (a) the use of a thin, bare metal wire that allows for movement as near to the beam as necessary while minimising interactions with beam particles and meeting the specified DC current target; and (b) a wire support that is both an electrical insulator and a thermal conductor (ceramic).A molybdenum wire, vacuum brazed on an aluminium nitride support, is proposed, and the design is conceptually proved through the realisation and extensive test of a demonstrator device. The wire brazing validation, as well as the system's heat management, which are the most critical aspects, are given particular regard.</td></tr> <tr><td class="formatRecordLabel"> Copyright/License </td><td style="padding-left:5px;"><a href="https://creativecommons.org/licenses/by/4.0">CC-BY-4.0</a></td></tr> </table> <br/>Corresponding record in: <a href="http://inspirehep.net/record/2716619">Inspire</a> <small> </small> <br/> <br/><br/><div align="right"><div style="padding-bottom:2px;padding-top:30px;"><span class="moreinfo" style="margin-right:10px;"> <a href="" class="moreinfo">Back to search</a> </span></div></div> <div class="bottom-left-folded"><div class="recordlastmodifiedbox" style="position:relative;margin-left:1px"> Record created 2024-01-16, last modified 2024-01-16</div></div> <div class="bottom-right-folded" style="text-align:right;padding-bottom:2px;"> <span class="moreinfo" style="margin-right:10px;"><a href="/search?ln=en&p=recid%3A2886519&rm=wrd" class="moreinfo">Similar records</a></span></div> </div> </div> </div> <br/> <br /> <div class="detailedrecordminipanel"> <div class="top-left"></div><div class="top-right"></div> <div class="inside"> <div id="detailedrecordminipanelfile" style="width:33%;float:left;text-align:center;margin-top:0"> <div><small class="detailedRecordActions">Fulltext:</small> <br /><a href="/record/2886519/files/document.pdf"><img style="border:none" src="/img/file-icon-text-34x48.gif" alt="Download fulltext" /><br />PDF</a><br /></div> </div> <div id="detailedrecordminipanelreview" style="width:30%;float:left;text-align:center"> </div> <div id="detailedrecordminipanelactions" style="width:36%;float:right;text-align:right;"> <ul class="detailedrecordactions"> <li><a href="/yourbaskets/add?ln=en&recid=2886519">Add to personal basket</a></li> <li>Export as <a style="text-decoration:underline;font-weight:normal" href="/record/2886519/export/hx?ln=en">BibTeX</a>, <a style="text-decoration:underline;font-weight:normal" href="/record/2886519/export/hm?ln=en">MARC</a>, <a style="text-decoration:underline;font-weight:normal" href="/record/2886519/export/xm?ln=en">MARCXML</a>, <a style="text-decoration:underline;font-weight:normal" href="/record/2886519/export/xd?ln=en">DC</a>, <a style="text-decoration:underline;font-weight:normal" href="/record/2886519/export/xe?ln=en">EndNote</a>,  <a style="text-decoration:underline;font-weight:normal" href="/record/2886519/export/xn?ln=en">NLM</a>, <a style="text-decoration:underline;font-weight:normal" href="/record/2886519/export/xw?ln=en">RefWorks</a> </li> </ul> <div style='padding-left: 13px;'>  <div id="bookmark"></div> <div id="bookmark_sciencewise"></div> <style type="text/css"> #bookmark_sciencewise, #bookmark {float: left;} #bookmark_sciencewise li {padding: 2px; width: 25px;} #bookmark_sciencewise ul, #bookmark ul {list-style-image: none;} </style> <script type="text/javascript" src="/js/jquery.bookmark.min.js"></script> <style type="text/css">@import "/css/jquery.bookmark.css";</style> <script type="text/javascript">// <![CDATA[ $.bookmark.addSite('sciencewise', 'ScienceWise.info', 'https://cds.cern.ch/img/sciencewise.png', 'en', 'bookmark', 'http://sciencewise.info/bookmarks/cds:2886519/add'); $('#bookmark_sciencewise').bookmark({sites: ['sciencewise']}); $('#bookmark').bookmark({ sites: ['facebook', 'twitter', 'linkedin', 'google_plusone'], icons: '/img/bookmarks.png', url: 'https://cds.cern.ch/record/2886519', addEmail: true, title: "Beam-beam long range compensator mechanical demonstrator", description: "Beam-Beam Long-Range Compensators employing current-carrying wires are considered as valuable options in hadron colliders to increase dynamic aperture at small crossing angles. This paper presents a simple design proposal for application at CERN LHC. The preliminary design allows for a certain scalability of the number of modules, current flowing in the wire, and dimensions. It complies with two key requirements: (a) the use of a thin, bare metal wire that allows for movement as near to the beam as necessary while minimising interactions with beam particles and meeting the specified DC current target; and (b) a wire support that is both an electrical insulator and a thermal conductor (ceramic).A molybdenum wire, vacuum brazed on an aluminium nitride support, is proposed, and the design is conceptually proved through the realisation and extensive test of a demonstrator device. 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