Material for magnets & measurements II

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Magnetically soft iron-nickel alloys are used as shields for the vacuum chambers of accelerator injection and extraction septa; Fe-based material is widely employed for cores of accelerator and experiment magnets. Weakly magnetic austenitic stainless steels are largely applied for structural and vacuum systems. After a review of the magnetic properties of materials and the different types of magnetic behaviour, this first lecture will deal with metallurgical aspects of magnetism. The influence of the metallurgy and metalworking processes of materials on their microstructure and magnetic properties is studied for different categories of magnetic materials relevant for accelerator technology. Their metallurgy is extensively treated. Hard magnetic material will also be covered. In the second lecture, the selection of materials for functional and structural components of accelerator and fusion magnets is addressed with examples taken from normal and superconducting magnets. The talk will address the material challenges of magnet construction, requiring a wide application of tightly specified grades, featuring a controlled microstructure and adequate mechanical, physical, magnetic and vacuum properties over a large temperature range. A broad spectrum of relevant examples will be presented, issued from the experience maturated within decades of building of large magnet systems that must guarantee a reliable, long-lasting service with limited interventions. The requirements, and in turn the metallurgical processes applied to achieve the final stringent properties will be discussed - dictated by mechanical, magnetic or vacuum compatibility constraints and often by a combination of them. A case study will be developed, highlighting the challenges of application of a stainless steel solution for the upgrade of the detector structure of the Compact Muon Solenoid (CMS), which is one of the two large experiments at the CERN Large Hadron Collider (LHC), involving the construction of a High Granularity Calorimeter in the framework of the High Luminosity LHC upgrade. This requires a cost-effective production of 600 tons of austenitic stainless steel plates with a tight specification in terms of magnetic permeability, to be processed through a tailored steelmaking route. Methods for characterizing and measuring the properties of feebly magnetic materials will also be addressed. Sgobba, Stefano" /> <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="Material for magnets &amp; measurements II" name="citation_title" /> <meta content="2023/11/28" name="citation_publication_date" /> <meta name="citation_online_date" content="2024/08/20">  <meta content="Material for magnets &amp; measurements II" property="og:title" /> <meta content="CAS course on &quot;Normal- and Superconducting Magnets&quot;, 19 November - 02 December 2023, St. Pölten, Austria" property="og:title" /> <meta content="website" property="og:type" /> <meta content="website" property="og:type" /> <meta content="https://cds.cern.ch/record/2907468" property="og:url" /> <meta property="og:video:height" content="360" /> <meta property="og:video:width" content="640" /> <meta property="og:video" content="https://lecturemedia.cern.ch/2023/1227234c46/1227234c46-presentation-360p-quality.mp4" /> <meta property="og:video:type" content="video/mp4" /> <meta property="og:image" content="" /> <meta name="twitter:player:height" content="360" /> <meta name="twitter:player:width" content="640" /> <link rel="image_src" href="" /> <link rel="video_src" href="https://cds.cern.ch/mediaplayer.swf?file=/1227234c46/1227234c46-presentation-360p-quality.mp4&streamer=rtmp://wowza.cern.ch:1935/vod&provider=rtmp&stretching=exactfit&image="/> <meta name="twitter:player" content="https://cds.cern.ch/video/?"/> <meta content="CERN Document Server" property="og:site_name" /> <meta content="Magnetic materials, both hard and soft, are used extensively in several components of particle accelerators. Magnetically soft iron-nickel alloys are used as shields for the vacuum chambers of accelerator injection and extraction septa; Fe-based material is widely employed for cores of accelerator and experiment magnets. Weakly magnetic austenitic stainless steels are largely applied for structural and vacuum systems. After a review of the magnetic properties of materials and the different types of magnetic behaviour, this first lecture will deal with metallurgical aspects of magnetism. The influence of the metallurgy and metalworking processes of materials on their microstructure and magnetic properties is studied for different categories of magnetic materials relevant for accelerator technology. Their metallurgy is extensively treated. Hard magnetic material will also be covered. In the second lecture, the selection of materials for functional and structural components of accelerator and fusion magnets is addressed with examples taken from normal and superconducting magnets. The talk will address the material challenges of magnet construction, requiring a wide application of tightly specified grades, featuring a controlled microstructure and adequate mechanical, physical, magnetic and vacuum properties over a large temperature range. A broad spectrum of relevant examples will be presented, issued from the experience maturated within decades of building of large magnet systems that must guarantee a reliable, long-lasting service with limited interventions. The requirements, and in turn the metallurgical processes applied to achieve the final stringent properties will be discussed - dictated by mechanical, magnetic or vacuum compatibility constraints and often by a combination of them. A case study will be developed, highlighting the challenges of application of a stainless steel solution for the upgrade of the detector structure of the Compact Muon Solenoid (CMS), which is one of the two large experiments at the CERN Large Hadron Collider (LHC), involving the construction of a High Granularity Calorimeter in the framework of the High Luminosity LHC upgrade. This requires a cost-effective production of 600 tons of austenitic stainless steel plates with a tight specification in terms of magnetic permeability, to be processed through a tailored steelmaking route. Methods for characterizing and measuring the properties of feebly magnetic materials will also be addressed." property="og:description" />  <meta content="summary" name="twitter:card" /> <style></style> </head> <body class="CERN32Document32Server search" lang="fr">  <div id="cern-toolbar"> <h1><a href="http://cern.ch" title="CERN">CERN <span>Accélérateur de science</span></a></h1> <ul> <li class="cern-accountlinks"><a class="cern-account" href="https://cds.cern.ch/youraccount/login?ln=fr&referer=https%3A//cds.cern.ch/record/2907468%3Fln%3Dfr" title="Sign in to your CERN account">Connexion</a></li> <li><a class="cern-directory" href="http://cern.ch/directory" title="Search CERN resources and browse the directory">Liens utiles</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">Articles, rapports et multimédia de la physique des hautes énergies</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=fr">Recherche</a></li> <li class="menu-444 "><a class="" title="" href="https://cds.cern.ch/submit?ln=fr">Soumettre</a></li> <li class="menu-426 "><a class="" href="https://cds.cern.ch/help/?ln=fr">Aide</a></li> <li class="leaf hassubcdsmenu"> <a hreflang="en" class="header" href="https://cds.cern.ch/youraccount/display?ln=fr">Personnaliser</a> <ul class="subsubcdsmenu"><li><a href="https://cds.cern.ch/youralerts/list?ln=fr">Vos alertes</a></li><li><a href="https://cds.cern.ch/yourbaskets/display?ln=fr">Vos paniers</a></li><li><a href="https://cds.cern.ch/yourcomments?ln=fr">Vos commentaires</a></li><li><a href="https://cds.cern.ch/youralerts/display?ln=fr">Vos recherches</a></li></ul></li> </ul> </div> </div> </div>  <table class="navtrailbox"> <tr> <td class="navtrailboxbody"> <a href="/?ln=fr" class="navtrail">Accueil</a> > Material for magnets & measurements II </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/2907468/?ln=fr">Informations </a></li><li class="disabled"><a>Fichiers </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="2907468"></abbr>  <link href="/img/download_and_embed_buttons.css" rel="stylesheet" type="text/css" /> <style type="text/css">  .video_talk_wrapper{ max-width: 640px; 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'Less..' : 'More..'); return false; }); }); </script><table id="download_movie_box"><tr><td align="right" valign="top" id="download_movie_box_format_label">Mp4:</td><td><a id="download_movie_box_internal_link" href="https://lecturemedia.cern.ch/2023/1227234c46/1227234c46-presentation-360p-quality.mp4">270p<br/><span>(presentation)</span></a></td><td><a id="download_movie_box_internal_link" href="https://lecturemedia.cern.ch/2023/1227234c46/1227234c46-presentation-1080p-quality.mp4">1080p<br/><span>(presentation)</span></a></td><td><a id="download_movie_box_internal_link" href="https://lecturemedia.cern.ch/2023/1227234c46/1227234c46-presentation-480p-quality.mp4">360p<br/><span>(presentation)</span></a></td><td><a id="download_movie_box_internal_link" href="https://lecturemedia.cern.ch/2023/1227234c46/1227234c46-presentation-720p-quality.mp4">720p<br/><span>(presentation)</span></a></td><td><a id="download_movie_box_internal_link" href="https://lecturemedia.cern.ch/2023/1227234c46/1227234c46-presenter-360p-quality.mp4">270p<br/><span>(presenter)</span></a></td><td><a id="download_movie_box_internal_link" href="https://lecturemedia.cern.ch/2023/1227234c46/1227234c46-presenter-480p-quality.mp4">360p<br/><span>(presenter)</span></a></td><td><a id="download_movie_box_internal_link" href="https://lecturemedia.cern.ch/2023/1227234c46/1227234c46-presenter-1080p-quality.mp4">1080p<br/><span>(presenter)</span></a></td><td><a id="download_movie_box_internal_link" href="https://lecturemedia.cern.ch/2023/1227234c46/1227234c46-presenter-720p-quality.mp4">720p<br/><span>(presenter)</span></a></td></table> </div> <div id="video_detailbox_embed" style="margin:10px"> <style type="text/css"> #embed_video_box{ background-color: #EEE; border: #DDD solid 1px; margin:0 auto; width: 90%; } #embed_video_box_header{ text-align: center; font-size:small; } </style><table id="embed_video_box"> <tr><th colspan="4" id="embed_video_box_header">Copy-paste this code into your page: </th></tr> <tr><td><textarea readonly="readonly" rows="3" cols="60"><iframe width="640" height="360" frameborder="0" src="https://cds.cern.ch/video/2907468?" allowfullscreen></iframe></textarea></td></tr> </table> </div> <tr><td class="formatRecordLabel"> <span style="white-space:nowrap;">Author(s)</span> </td><td style="padding-left:5px;"><a href="https://cds.cern.ch/search?f=author&p=Sgobba%2C%20Stefano&ln=fr">Sgobba, Stefano</a> (speaker) (CERN)</td></tr> <tr><td class="formatRecordLabel"> Corporate <span style="white-space:nowrap;">author(s)</span> </td><td style="padding-left:5px;">CERN. Geneva</td></tr> <tr><td class="formatRecordLabel"> Publication </td><td style="padding-left:5px;">2023</td></tr>  <script type="text/javascript"> /* * Changes the Imprint title to Date - Duration as requested by RQF0820114 * This is a hack not to touch the general imprint format element */ $(document).ready(function() { var collections = 'Indico'; if (collections.indexOf('E-LEARNING') > -1) { $('.cern-imprint-label').text('Date - Duration'); } }) </script> <tr><td class="formatRecordLabel cern-imprint-label"> Imprint </td><td style="padding-left:5px;">2023-11-28</td></tr> <tr><td class="formatRecordLabel"> Number of pages </td><td style="padding-left:5px;">3253</td></tr>  <tr><td class="formatRecordLabel"> Series </td><td style="padding-left:5px;">(<a href="/search?f=490__a&p=CERN%20Accelerator%20School">CERN Accelerator School</a>)<br/>(<a href="/search?f=490__a&p=CAS%20course%20on%20%22Normal-%20and%20Superconducting%20Magnets%22%2C%2019%20November%20-%2002%20December%202023%2C%20St.%20P%C3%B6lten%2C%20Austria">CAS course on "Normal- and Superconducting Magnets", 19 November - 02 December 2023, St. Pölten, Austria</a>)</td></tr> <tr><td class="formatRecordLabel"> Lecture note </td><td style="padding-left:5px;"> on 2023-11-28T08:30:00<br/></td></tr> <tr><td class="formatRecordLabel"> Subject category </td><td style="padding-left:5px;">CERN Accelerator School</td></tr> <tr><td class="formatRecordLabel"> Abstract </td><td style="padding-left:5px;">Magnetic materials, both hard and soft, are used extensively in several components of particle accelerators. Magnetically soft iron-nickel alloys are used as shields for the vacuum chambers of accelerator injection and extraction septa; Fe-based material is widely employed for cores of accelerator and experiment magnets. Weakly magnetic austenitic stainless steels are largely applied for structural and vacuum systems. After a review of the magnetic properties of materials and the different types of magnetic behaviour, this first lecture will deal with metallurgical aspects of magnetism. The influence of the metallurgy and metalworking processes of materials on their microstructure and magnetic properties is studied for different categories of magnetic materials relevant for accelerator technology. Their metallurgy is extensively treated. Hard magnetic material will also be covered. In the second lecture, the selection of materials for functional and structural components of accelerator and fusion magnets is addressed with examples taken from normal and superconducting magnets. The talk will address the material challenges of magnet construction, requiring a wide application of tightly specified grades, featuring a controlled microstructure and adequate mechanical, physical, magnetic and vacuum properties over a large temperature range. A broad spectrum of relevant examples will be presented, issued from the experience maturated within decades of building of large magnet systems that must guarantee a reliable, long-lasting service with limited interventions. The requirements, and in turn the metallurgical processes applied to achieve the final stringent properties will be discussed - dictated by mechanical, magnetic or vacuum compatibility constraints and often by a combination of them. A case study will be developed, highlighting the challenges of application of a stainless steel solution for the upgrade of the detector structure of the Compact Muon Solenoid (CMS), which is one of the two large experiments at the CERN Large Hadron Collider (LHC), involving the construction of a High Granularity Calorimeter in the framework of the High Luminosity LHC upgrade. This requires a cost-effective production of 600 tons of austenitic stainless steel plates with a tight specification in terms of magnetic permeability, to be processed through a tailored steelmaking route. Methods for characterizing and measuring the properties of feebly magnetic materials will also be addressed.</td></tr> <tr><td class="formatRecordLabel"> Copyright/License </td><td style="padding-left:5px;"><a href="https://copyright.web.cern.ch/">© 2023-2024 CERN</a></td></tr> <tr><td class="formatRecordLabel"> Submitted by </td><td style="padding-left:5px;"><a href="mailto:delphine.rivoiron@cern.ch">delphine.rivoiron@cern.ch</a></td></tr> </table> <br/><div><div style="clear: both;"> </div></div> <script type="text/javascript"> // Initially hide: $(".longCaption").hide(); // Allow to toggle visibility: $(".toggleLongCaption").toggle(function(){ $(this).siblings(".longCaption").show('fast'); var thisElem = $(this); thisElem.text(thisElem.text() === "davantage" ? "moins" : "davantage"); },function(){ $(this).siblings(".longCaption").hide('fast'); var thisElem = $(this); thisElem.text(thisElem.text() === "davantage" ? 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Magnetically soft iron-nickel alloys are used as shields for the vacuum chambers of accelerator injection and extraction septa; Fe-based material is widely employed for cores of accelerator and experiment magnets. Weakly magnetic austenitic stainless steels are largely applied for structural and vacuum systems. After a review of the magnetic properties of materials and the different types of magnetic behaviour, this first lecture will deal with metallurgical aspects of magnetism. The influence of the metallurgy and metalworking processes of materials on their microstructure and magnetic properties is studied for different categories of magnetic materials relevant for accelerator technology. Their metallurgy is extensively treated. Hard magnetic material will also be covered. In the second lecture, the selection of materials for functional and structural components of accelerator and fusion magnets is addressed with examples taken from normal and superconducting magnets. The talk will address the material challenges of magnet construction, requiring a wide application of tightly specified grades, featuring a controlled microstructure and adequate mechanical, physical, magnetic and vacuum properties over a large temperature range. A broad spectrum of relevant examples will be presented, issued from the experience maturated within decades of building of large magnet systems that must guarantee a reliable, long-lasting service with limited interventions. The requirements, and in turn the metallurgical processes applied to achieve the final stringent properties will be discussed - dictated by mechanical, magnetic or vacuum compatibility constraints and often by a combination of them. A case study will be developed, highlighting the challenges of application of a stainless steel solution for the upgrade of the detector structure of the Compact Muon Solenoid (CMS), which is one of the two large experiments at the CERN Large Hadron Collider (LHC), involving the construction of a High Granularity Calorimeter in the framework of the High Luminosity LHC upgrade. This requires a cost-effective production of 600 tons of austenitic stainless steel plates with a tight specification in terms of magnetic permeability, to be processed through a tailored steelmaking route. Methods for characterizing and measuring the properties of feebly magnetic materials will also be addressed." }); // ]]> </script>  </div> </div> <div style="clear:both;margin-bottom: 0;"></div> </div> <div class="bottom-left"></div><div class="bottom-right"></div> </div> </div></div> <footer id="footer" class="pagefooter clearfix">  <div class="pagefooterstripeleft"> CERN Document Server :: <a class="footer" href="https://cds.cern.ch/?ln=fr">Recherche</a> :: <a class="footer" href="https://cds.cern.ch/submit?ln=fr">Soumettre</a> :: <a class="footer" href="https://cds.cern.ch/youraccount/display?ln=fr">Personnaliser</a> :: <a class="footer" href="https://cds.cern.ch/help/?ln=fr">Aide</a> :: <a class="footer" href="https://cern.service-now.com/service-portal?id=privacy_policy&se=CDS-Service" target="_blank">Privacy Notice</a> <br /> Powered by <a class="footer" href="http://invenio-software.org/">Invenio</a> <br /> Maintenu par <a class="footer" href="https://cern.service-now.com/service-portal?id=service_element&name=CDS-Service">CDS Service</a> - Need help? 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