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With respect to the current triplet quadrupole magnets, MQXF will feature a larger aper-ture, from 70 to 150 mm, a higher peak field, from 8.6 to 11.4 T, and a new superconducting material, Nb3Sn instead of Nb-Ti. Out of the 30 triplets magnets (including spares) that will be installed in the HL-LHC, 20 magnets, called MQXFA and 4.2 m long, will be fabricated by the US Accelerator Research Program (AUP), a continuation of the LARP Program [7]. Among the components to be upgraded in LHC inter- action regions for the HiLumi-LHC projects are the inner triplet (or low-β) quadrupole magnets, denoted as Q1, Q2a, Q2b, and Q3. The new quadrupole magnets, called MQXF, are based on Nb3 Sn superconducting magnet technology and operate at a gradient of 132.6 T/m, with a conductor peak ﬁeld of 11.4 T. Q1 and Q3 are composed of magnets (called MQXFA) fabricated by the U.S. Ac- celerator Upgrade Project (AUP), with a magnetic length of 4.2 m. Q2a and Q2b consist of magnets (called MQXFB) fabricated by CERN, with a magnetic length of 7.15 m. After a series of short models, constructed in close collaboration by the US and CERN, the development program is now entering in the prototyping phase, with CERN on one side and BNL, FNAL, and LBNL on the other side assembling and testing their ﬁrst long magnets We provide in this paper a description of the status of the MQXF program, with a summary of the short model test results, including quench performance, and mechanics, and an update on the fabrication, assembly, and test of the long prototypes. Ferracin, Paolo; Ambrosio, Giorgio; Anerella, Michael; Bajas, Hugues; Bajko, Marta; Bordini, Bernardo; Bossert, Rodger; Bourcey, Nicolas; Cheng, Daniel W; Chlachidze, Guram; Cooley, Lance D; Troitino, Salvador Ferradas; Fiscarelli, Lucio; Fleiter, Jerome; Guinchard, Michael; Izquierdo Bermudez, Susana; Krave, Steven; Lackner, Friedrich; Mangiarotti, Franco; Marchevsky, Maxim; Marinozzi, Vittorio; Muratore, Joseph; Nobrega, Alfred; Pan, Heng; Perez, Juan Carlos; Pong, Ian; Prestemon, Soren; Prin, Herve; Ravaioli, Emmanuele; Sabbi, Gian Luca; Schmalzle, Jesse; Sequeira Tavares, Sandra; Stoynev, Stoyan; Todesco, Emilov; Vallone, Giorgio; Wanderer, Peter; Wang, Xiaorong; Yu, Miao" /> <meta name="keywords" content="CERN Document Server, WebSearch, CERN Document Server" /> <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="The HL-LHC Low-$\beta$ Quadrupole Magnet MQXF: from Short Models to Long Prototypes" name="citation_title" /> <meta content="Ferracin, Paolo" name="citation_author" /> <meta content="Fiscarelli, Lucio" name="citation_author" /> <meta content="Bajas, Hugues" name="citation_author" /> <meta content="Perez, Juan Carlos" name="citation_author" /> <meta content="Bajko, Marta" name="citation_author" /> <meta content="Marchevsky, Maxim" name="citation_author" /> <meta content="Wang, Xiaorong" name="citation_author" /> <meta content="Troitino, Salvador Ferradas" name="citation_author" /> <meta content="Schmalzle, Jesse" name="citation_author" /> <meta content="Prin, Herve" name="citation_author" /> <meta content="Izquierdo Bermudez, Susana" name="citation_author" /> <meta content="Yu, Miao" name="citation_author" /> <meta content="Sequeira Tavares, Sandra" name="citation_author" /> <meta content="Bordini, Bernardo" name="citation_author" /> <meta content="Cooley, Lance D" name="citation_author" /> <meta content="Bossert, Rodger" name="citation_author" /> <meta content="Bourcey, Nicolas" name="citation_author" /> <meta content="Fleiter, Jerome" name="citation_author" /> <meta content="Wanderer, Peter" name="citation_author" /> <meta content="Lackner, Friedrich" name="citation_author" /> <meta content="Vallone, Giorgio" name="citation_author" /> <meta content="Ambrosio, Giorgio" name="citation_author" /> <meta content="Guinchard, Michael" name="citation_author" /> <meta content="Ravaioli, Emmanuele" name="citation_author" /> <meta content="Anerella, Michael" name="citation_author" /> <meta content="Krave, Steven" name="citation_author" /> <meta content="Pan, Heng" name="citation_author" /> <meta content="Stoynev, Stoyan" name="citation_author" /> <meta content="Prestemon, Soren" name="citation_author" /> <meta content="Nobrega, Alfred" name="citation_author" /> <meta content="Pong, Ian" name="citation_author" /> <meta content="Marinozzi, Vittorio" name="citation_author" /> <meta content="Muratore, Joseph" name="citation_author" /> <meta content="Chlachidze, Guram" name="citation_author" /> <meta content="Sabbi, Gian Luca" name="citation_author" /> <meta content="Cheng, Daniel W" name="citation_author" /> <meta content="Mangiarotti, Franco" name="citation_author" /> <meta content="Todesco, Emilov" name="citation_author" /> <meta content="10.1109/TASC.2020.3020710" name="citation_doi" /> <meta content="10.1109/TASC.2019.2895908" name="citation_doi" /> <meta content="IEEE Trans. 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With respect to the current triplet quadrupole magnets, MQXF will feature a larger aper-ture, from 70 to 150 mm, a higher peak field, from 8.6 to 11.4 T, and a new superconducting material, Nb3Sn instead of Nb-Ti. Out of the 30 triplets magnets (including spares) that will be installed in the HL-LHC, 20 magnets, called MQXFA and 4.2 m long, will be fabricated by the US Accelerator Research Program (AUP), a continuation of the LARP Program [7]." property="og:description" /> <meta content="Among the components to be upgraded in LHC inter- action regions for the HiLumi-LHC projects are the inner triplet (or low-β) quadrupole magnets, denoted as Q1, Q2a, Q2b, and Q3. The new quadrupole magnets, called MQXF, are based on Nb3 Sn superconducting magnet technology and operate at a gradient of 132.6 T/m, with a conductor peak ﬁeld of 11.4 T. Q1 and Q3 are composed of magnets (called MQXFA) fabricated by the U.S. Ac- celerator Upgrade Project (AUP), with a magnetic length of 4.2 m. Q2a and Q2b consist of magnets (called MQXFB) fabricated by CERN, with a magnetic length of 7.15 m. After a series of short models, constructed in close collaboration by the US and CERN, the development program is now entering in the prototyping phase, with CERN on one side and BNL, FNAL, and LBNL on the other side assembling and testing their ﬁrst long magnets We provide in this paper a description of the status of the MQXF program, with a summary of the short model test results, including quench performance, and mechanics, and an update on the fabrication, assembly, and test of the long prototypes." property="og:description" />  <meta content="summary" name="twitter:card" /> <meta content="summary" name="twitter:card" /> <style></style> </head> <body class="CERN32Document32Server search" lang="ja">  <div id="cern-toolbar"> <h1><a href="http://cern.ch" title="CERN">CERN <span>Accelerating science</span></a></h1> <ul> <li class="cern-accountlinks"><a class="cern-account" href="https://cds.cern.ch/youraccount/login?ln=ja&referer=https%3A//cds.cern.ch/record/2677217%3Fln%3Dja" title="Sign in to your CERN account">Sign in</a></li> <li><a class="cern-directory" href="http://cern.ch/directory" title="Search CERN resources and browse the directory">Directory</a></li> </ul> </div>   <div role="banner" class="clearfix" id="header"> <div class="header-inner inner"> <hgroup class="clearfix"> <h2 id="site-name"> <a rel="home" title="Home" href="/"><span>CERN Document Server</span></a> </h2> <h3 id="site-slogan">Access articles, reports and multimedia content in HEP</h3> </hgroup> <div role="navigation" id="main-navigation" class="cdsmenu"> <h2 class="element-invisible">Main menu</h2><ul class="links inline clearfix"> <li class="menu-386 first active-trail"><a class="active-trail" href="https://cds.cern.ch/?ln=ja">検索</a></li> <li class="menu-444 "><a class="" title="" href="https://cds.cern.ch/submit?ln=ja">アップロード</a></li> <li class="menu-426 "><a class="" href="https://cds.cern.ch/help/?ln=ja">ヘルプ</a></li> <li class="leaf hassubcdsmenu"> <a hreflang="en" class="header" href="https://cds.cern.ch/youraccount/display?ln=ja">あなたのページ</a> <ul class="subsubcdsmenu"><li><a href="https://cds.cern.ch/youralerts/list?ln=ja">Your alerts</a></li><li><a href="https://cds.cern.ch/yourbaskets/display?ln=ja">Your baskets</a></li><li><a href="https://cds.cern.ch/yourcomments?ln=ja">Your comments</a></li><li><a href="https://cds.cern.ch/youralerts/display?ln=ja">Your searches</a></li></ul></li> </ul> </div> </div> </div>  <table class="navtrailbox"> <tr> <td class="navtrailboxbody"> <a href="/?ln=ja" class="navtrail">ホーム</a> > The HL-LHC Low-$\beta$ Quadrupole Magnet MQXF: from Short Models to Long Prototypes </td> </tr> </table> </div> <div class="pagebody"><div class="pagebodystripemiddle"> <div class="detailedrecordbox"> <div class="detailedrecordtabs"> <div> <ul class="detailedrecordtabs"><li class="on first"><a href="/record/2677217/?ln=ja">Information </a></li><li class=""><a href="/record/2677217/files?ln=ja">Files </a></li></ul> <div id="tabsSpacer" style="clear:both;height:0px"> </div></div> </div> <div class="detailedrecordboxcontent"> <div class="top-left-folded"></div> <div class="top-right-folded"></div> <div class="inside">  <abbr class="unapi-id" title="2677217"></abbr> <style type="text/css">  </style> <table class="formatRecordTableFullWidth" > <tr> <td class="formatRecordHeader" style="background-image: url('https://cds.cern.ch/img/journals.jpg');" colspan="2">  <a style="color:#fff;text-decoration:none" href="https://cds.cern.ch/collection/Published%20Articles">Published Articles</a> </td> </tr> <script type="text/javascript"> $( document ).ready(function() { $('.showAuthor').on('click', function() { var author = '<p>' + $(this).data('name') + '</p>'; var affiliation = $(this).data('affiliation') + '</br>'; var contribution = $(this).data('contribution') + '</br>'; $.magnificPopup.open({ items: { src: '<div id="ovelary-mathjax" class="overlay-white oc-content overlay-white-500">' + author + affiliation + contribution + '</div>', type: 'inline' }, callbacks: { open: function() { var div = document.getElementById("overlay-mathjax") MathJax.Hub.Queue(["Typeset", MathJax.Hub, div]); }, } }) }) }); </script> <tr><td class="formatRecordLabel"> Report number </td><td style="padding-left:5px;">FERMILAB-PUB-19-008-TD</td></tr> <tr><td class="formatRecordLabel"> Title </td><td style="padding-left:5px;"><b>The HL-LHC Low-$\beta$ Quadrupole Magnet MQXF: from Short Models to Long Prototypes</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 = "隠す" } else { more.style.display = 'none'; extension.style.display = ''; link.innerHTML = "38 人のオーサーを表示" } 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=Ferracin%2C%20Paolo&ln=ja">Ferracin, Paolo</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Ambrosio%2C%20Giorgio&ln=ja">Ambrosio, Giorgio</a> (Fermilab) ; <a href="https://cds.cern.ch/search?f=author&p=Anerella%2C%20Michael&ln=ja">Anerella, Michael</a> (Brookhaven) ; <a href="https://cds.cern.ch/search?f=author&p=Bajas%2C%20Hugues&ln=ja">Bajas, Hugues</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Bajko%2C%20Marta&ln=ja">Bajko, Marta</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Bordini%2C%20Bernardo&ln=ja">Bordini, Bernardo</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Bossert%2C%20Rodger&ln=ja">Bossert, Rodger</a> (Fermilab) ; <a href="https://cds.cern.ch/search?f=author&p=Bourcey%2C%20Nicolas&ln=ja">Bourcey, Nicolas</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Cheng%2C%20Daniel%20W&ln=ja">Cheng, Daniel W</a> (LBL, Berkeley) ; <a href="https://cds.cern.ch/search?f=author&p=Chlachidze%2C%20Guram&ln=ja">Chlachidze, Guram</a> (Fermilab)<span id="more" style=""> ; <a href="https://cds.cern.ch/search?f=author&p=Cooley%2C%20Lance%20D&ln=ja">Cooley, Lance D</a> (Natl. High Mag. Field Lab.) ; <a href="https://cds.cern.ch/search?f=author&p=Troitino%2C%20Salvador%20Ferradas&ln=ja">Troitino, Salvador Ferradas</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Fiscarelli%2C%20Lucio&ln=ja">Fiscarelli, Lucio</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Fleiter%2C%20Jerome&ln=ja">Fleiter, Jerome</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Guinchard%2C%20Michael&ln=ja">Guinchard, Michael</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Izquierdo%20Bermudez%2C%20Susana&ln=ja">Izquierdo Bermudez, Susana</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Krave%2C%20Steven&ln=ja">Krave, Steven</a> (Fermilab) ; <a href="https://cds.cern.ch/search?f=author&p=Lackner%2C%20Friedrich&ln=ja">Lackner, Friedrich</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Mangiarotti%2C%20Franco&ln=ja">Mangiarotti, Franco</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Marchevsky%2C%20Maxim&ln=ja">Marchevsky, Maxim</a> (LBL, Berkeley) ; <a href="https://cds.cern.ch/search?f=author&p=Marinozzi%2C%20Vittorio&ln=ja">Marinozzi, Vittorio</a> (Fermilab) ; <a href="https://cds.cern.ch/search?f=author&p=Muratore%2C%20Joseph&ln=ja">Muratore, Joseph</a> (Brookhaven) ; <a href="https://cds.cern.ch/search?f=author&p=Nobrega%2C%20Alfred&ln=ja">Nobrega, Alfred</a> (Fermilab) ; <a href="https://cds.cern.ch/search?f=author&p=Pan%2C%20Heng&ln=ja">Pan, Heng</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Perez%2C%20Juan%20Carlos&ln=ja">Perez, Juan Carlos</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Pong%2C%20Ian&ln=ja">Pong, Ian</a> (LBL, Berkeley) ; <a href="https://cds.cern.ch/search?f=author&p=Prestemon%2C%20Soren&ln=ja">Prestemon, Soren</a> (LBL, Berkeley) ; <a href="https://cds.cern.ch/search?f=author&p=Prin%2C%20Herve&ln=ja">Prin, Herve</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Ravaioli%2C%20Emmanuele&ln=ja">Ravaioli, Emmanuele</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Sabbi%2C%20Gian%20Luca&ln=ja">Sabbi, Gian Luca</a> (LBL, Berkeley) ; <a href="https://cds.cern.ch/search?f=author&p=Schmalzle%2C%20Jesse&ln=ja">Schmalzle, Jesse</a> (Brookhaven) ; <a href="https://cds.cern.ch/search?f=author&p=Sequeira%20Tavares%2C%20Sandra&ln=ja">Sequeira Tavares, Sandra</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Stoynev%2C%20Stoyan&ln=ja">Stoynev, Stoyan</a> (Fermilab) ; <a href="https://cds.cern.ch/search?f=author&p=Todesco%2C%20Emilov&ln=ja">Todesco, Emilov</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Vallone%2C%20Giorgio&ln=ja">Vallone, Giorgio</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Wanderer%2C%20Peter&ln=ja">Wanderer, Peter</a> (Brookhaven) ; <a href="https://cds.cern.ch/search?f=author&p=Wang%2C%20Xiaorong&ln=ja">Wang, Xiaorong</a> (LBL, Berkeley) ; <a href="https://cds.cern.ch/search?f=author&p=Yu%2C%20Miao&ln=ja">Yu, Miao</a> (Fermilab)</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;">2019</td></tr> <tr><td class="formatRecordLabel"> Imprint </td><td style="padding-left:5px;">2019-01-08</td></tr> <tr><td class="formatRecordLabel"> Number of pages </td><td style="padding-left:5px;">9</td></tr> <tr><td class="formatRecordLabel"> In: </td><td style="padding-left:5px;"><i>IEEE Trans. Appl. Supercond.</i> 29, 5 (2019) pp.4001309<br/><i>IEEE Trans. Appl. Supercond.</i> 30, 7 (2020) pp.9700701</td></tr> <tr><td class="formatRecordLabel"> In: </td><td style="padding-left:5px;"><a href="https://cds.cern.ch/record/2651009">Applied Superconductivity Conference 2018</a>, Seattle, United States Of America, 28 Oct - 2 Nov 2018, pp.4001309</td></tr> <tr><td class="formatRecordLabel"> DOI </td><td style="padding-left:5px;"><a href="http://dx.doi.org/10.1109/TASC.2019.2895908" title="DOI" target="_blank">10.1109/TASC.2019.2895908</a> (publication)<br/> <a href="http://dx.doi.org/10.1109/TASC.2020.3020710" title="DOI" target="_blank">10.1109/TASC.2020.3020710</a> (erratum) <tr><td class="formatRecordLabel"> Subject category </td><td style="padding-left:5px;">Accelerators and Storage Rings</td></tr> <tr><td class="formatRecordLabel"> Accelerator/Facility, Experiment </td><td style="padding-left:5px;"><a href="https://cds.cern.ch/search?p=LARP&f=693__e">LARP</a><br/><a href="https://cds.cern.ch/search?p=CERN%20LHC&f=693__a">CERN LHC</a></td></tr> <tr><td class="formatRecordLabel"> Project </td><td style="padding-left:5px;"><a href='https://cds.cern.ch/search?p=693__p:"CERN HL-LHC"'>CERN HL-LHC</a></td></tr> <tr><td class="formatRecordLabel"> Abstract </td><td style="padding-left:5px;">Among the components to be upgraded in LHC inter- action regions for the HiLumi-LHC projects are the inner triplet (or low-β) quadrupole magnets, denoted as Q1, Q2a, Q2b, and Q3. The new quadrupole magnets, called MQXF, are based on Nb3 Sn superconducting magnet technology and operate at a gradient of 132.6 T/m, with a conductor peak ﬁeld of 11.4 T. Q1 and Q3 are composed of magnets (called MQXFA) fabricated by the U.S. Ac- celerator Upgrade Project (AUP), with a magnetic length of 4.2 m. Q2a and Q2b consist of magnets (called MQXFB) fabricated by CERN, with a magnetic length of 7.15 m. After a series of short models, constructed in close collaboration by the US and CERN, the development program is now entering in the prototyping phase, with CERN on one side and BNL, FNAL, and LBNL on the other side assembling and testing their ﬁrst long magnets We provide in this paper a description of the status of the MQXF program, with a summary of the short model test results, including quench performance, and mechanics, and an update on the fabrication, assembly, and test of the long prototypes.</td></tr> <tr><td class="formatRecordLabel"> Copyright/License </td><td style="padding-left:5px;">Publication: © 2019-2024 IEEE<br/>Erratum: © 2020-2024 IEEE</td></tr> </table> <br/>Corresponding record in: <a href="http://inspirehep.net/record/1722224">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"> レコード　生成： 2019-06-04, 最終変更： 2022-01-20</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=ja&p=recid%3A2677217&rm=wrd" class="moreinfo">ほとんど同じレコード</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">フルテキスト:</small> <br /><a href="/record/2677217/files/fermilab-pub-19-008-td.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=ja&recid=2677217">Add to personal basket</a></li> <li>Export as <a style="text-decoration:underline;font-weight:normal" href="/record/2677217/export/hx?ln=ja">BibTeX</a>, <a style="text-decoration:underline;font-weight:normal" href="/record/2677217/export/hm?ln=ja">MARC</a>, <a style="text-decoration:underline;font-weight:normal" href="/record/2677217/export/xm?ln=ja">MARCXML</a>, <a style="text-decoration:underline;font-weight:normal" href="/record/2677217/export/xd?ln=ja">DC</a>, <a style="text-decoration:underline;font-weight:normal" href="/record/2677217/export/xe?ln=ja">EndNote</a>,  <a style="text-decoration:underline;font-weight:normal" href="/record/2677217/export/xn?ln=ja">NLM</a>, <a style="text-decoration:underline;font-weight:normal" href="/record/2677217/export/xw?ln=ja">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:2677217/add'); $('#bookmark_sciencewise').bookmark({sites: ['sciencewise']}); $('#bookmark').bookmark({ sites: ['facebook', 'twitter', 'linkedin', 'google_plusone'], icons: '/img/bookmarks.png', url: 'https://cds.cern.ch/record/2677217', addEmail: true, title: "The HL-LHC Low-$\\beta$ Quadrupole Magnet MQXF: from Short Models to Long Prototypes", description: "In order to reduce the beam size by a factor two in the inter-action points, and to increase the rate of collisions by a factorof five, the HL-LHC Project [1] is planning to install in the LHC Interaction Regions (IR) new inner triplet (or low-\u03b2) quadru-pole magnets, called MQXF [2]-[6]. 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