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The use of such technology in some restricted-access radioactive areas within CERN accelerators could result in noticeable advantages, especially during maintenance operations. Bolt-free SMA couplers, can be activated remotely by temperature changes, resulting in significant reduction of the radiation doses collected by the technical personnel. The functional performance of SMA-based prototype systems, in terms of leak tightness, thermal mounting/dismounting and thermal outgassing properties, has been already verified. Radiation-induced microstructural damages usually cause losses in the mechanical properties, such as embrittlement in conventional engineering metals. The particle radiation effects on the functional characteristics of SMAs, in terms of microstructural transition mechanisms, represent a key issue for their application in critical accelerators areas. To this aim, specific research activities are being carried out at CERN for capturing the evolution of SMA mechanical and functional properties during and/or after particle irradiation. In this preliminary study, a few selected SMA-based prototype UHV chambers, have been exposed to a high-energy mixed particle field (up to ∼140 kGy of absorbed dose) at the CERN high-energy accelerator mixed-field (CHARM) facility. The results, in terms of post-irradiation measurements, have revealed that leak tightness and thermal dismounting are unaffected by irradiation Niccoli, F; Garion, C; Maletta, C; Cangialosi, C; Infantino, A; Danzeca, S; Chiggiato, P" /> <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="submitter : Particle radiation effects on shape memory alloy couplers for ultra-high vacuum sealing: a preliminary study" name="citation_title" /> <meta content="Niccoli, F" name="citation_author" /> <meta content="Maletta, C" name="citation_author" /> <meta content="Cangialosi, C" name="citation_author" /> <meta content="Infantino, A" name="citation_author" /> <meta content="Chiggiato, P" name="citation_author" /> <meta content="Garion, C" name="citation_author" /> <meta content="Danzeca, S" name="citation_author" /> <meta content="10.1088/1361-665x/ab0caa" name="citation_doi" /> <meta content="Smart Mater. 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The use of such technology in some restricted-access radioactive areas within CERN accelerators could result in noticeable advantages, especially during maintenance operations. Bolt-free SMA couplers, can be activated remotely by temperature changes, resulting in significant reduction of the radiation doses collected by the technical personnel. The functional performance of SMA-based prototype systems, in terms of leak tightness, thermal mounting/dismounting and thermal outgassing properties, has been already verified. Radiation-induced microstructural damages usually cause losses in the mechanical properties, such as embrittlement in conventional engineering metals. The particle radiation effects on the functional characteristics of SMAs, in terms of microstructural transition mechanisms, represent a key issue for their application in critical accelerators areas. To this aim, specific research activities are being carried out at CERN for capturing the evolution of SMA mechanical and functional properties during and/or after particle irradiation. In this preliminary study, a few selected SMA-based prototype UHV chambers, have been exposed to a high-energy mixed particle field (up to ∼140 kGy of absorbed dose) at the CERN high-energy accelerator mixed-field (CHARM) facility. 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Calabria, Arcavacata di Rende (main)) ; <a href="https://cds.cern.ch/search?f=author&p=Cangialosi%2C%20C&ln=zh_CN">Cangialosi, C</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Infantino%2C%20A&ln=zh_CN">Infantino, A</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Danzeca%2C%20S&ln=zh_CN">Danzeca, S</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Chiggiato%2C%20P&ln=zh_CN">Chiggiato, P</a> (CERN)</td></tr> <tr><td class="formatRecordLabel"> Publication </td><td style="padding-left:5px;">2019</td></tr> <tr><td class="formatRecordLabel"> Number of pages </td><td style="padding-left:5px;">13</td></tr> <tr><td class="formatRecordLabel"> In: </td><td style="padding-left:5px;"><a href="http://dx.doi.org/10.1088/1361-665x/ab0caa"><i>Smart Mater. Struct.</i> 28 (2019) 085023</a> </a></td></tr> <tr><td class="formatRecordLabel"> DOI </td><td style="padding-left:5px;"><a href="http://dx.doi.org/10.1088/1361-665x/ab0caa" title="DOI" target="_blank">10.1088/1361-665x/ab0caa</a> <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=CERN%20CHARM&f=693__a">CERN CHARM</a></td></tr> <tr><td class="formatRecordLabel"> Abstract </td><td style="padding-left:5px;">A new shape memory alloy (SMA)-based coupling system for ultra-high vacuum (UHV) applications in particle in accelerators is currently under investigation at the European organization for nuclear research (CERN). The use of such technology in some restricted-access radioactive areas within CERN accelerators could result in noticeable advantages, especially during maintenance operations. Bolt-free SMA couplers, can be activated remotely by temperature changes, resulting in significant reduction of the radiation doses collected by the technical personnel. The functional performance of SMA-based prototype systems, in terms of leak tightness, thermal mounting/dismounting and thermal outgassing properties, has been already verified. Radiation-induced microstructural damages usually cause losses in the mechanical properties, such as embrittlement in conventional engineering metals. The particle radiation effects on the functional characteristics of SMAs, in terms of microstructural transition mechanisms, represent a key issue for their application in critical accelerators areas. To this aim, specific research activities are being carried out at CERN for capturing the evolution of SMA mechanical and functional properties during and/or after particle irradiation. In this preliminary study, a few selected SMA-based prototype UHV chambers, have been exposed to a high-energy mixed particle field (up to ∼140 kGy of absorbed dose) at the CERN high-energy accelerator mixed-field (CHARM) facility. The results, in terms of post-irradiation measurements, have revealed that leak tightness and thermal dismounting are unaffected by irradiation</td></tr> <tr><td class="formatRecordLabel"> Copyright/License </td><td style="padding-left:5px;">© 2019-2024 IOP Publishing Ltd</td></tr> </table> <br/>Corresponding record in: <a href="http://inspirehep.net/record/2022253">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"> 记录创建於2022-07-26，最後更新在2022-07-26</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=zh_CN&p=recid%3A2816635&rm=wrd" class="moreinfo">相似记录</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"> <br/> </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=zh_CN&recid=2816635">Add to personal basket</a></li> <li>Export as <a style="text-decoration:underline;font-weight:normal" href="/record/2816635/export/hx?ln=zh_CN">BibTeX</a>, <a style="text-decoration:underline;font-weight:normal" href="/record/2816635/export/hm?ln=zh_CN">MARC</a>, <a style="text-decoration:underline;font-weight:normal" href="/record/2816635/export/xm?ln=zh_CN">MARCXML</a>, <a style="text-decoration:underline;font-weight:normal" href="/record/2816635/export/xd?ln=zh_CN">DC</a>, <a style="text-decoration:underline;font-weight:normal" href="/record/2816635/export/xe?ln=zh_CN">EndNote</a>,  <a style="text-decoration:underline;font-weight:normal" href="/record/2816635/export/xn?ln=zh_CN">NLM</a>, <a style="text-decoration:underline;font-weight:normal" href="/record/2816635/export/xw?ln=zh_CN">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:2816635/add'); $('#bookmark_sciencewise').bookmark({sites: ['sciencewise']}); $('#bookmark').bookmark({ sites: ['facebook', 'twitter', 'linkedin', 'google_plusone'], icons: '/img/bookmarks.png', url: 'https://cds.cern.ch/record/2816635', addEmail: true, title: "Particle radiation effects on shape memory alloy couplers for ultra-high vacuum sealing: a preliminary study", description: "A new shape memory alloy (SMA)-based coupling system for ultra-high vacuum (UHV)\napplications in particle in accelerators is currently under investigation at the European\norganization for nuclear research (CERN). The use of such technology in some restricted-access\nradioactive areas within CERN accelerators could result in noticeable advantages, especially\nduring maintenance operations. Bolt-free SMA couplers, can be activated remotely by\ntemperature changes, resulting in significant reduction of the radiation doses collected by the\ntechnical personnel. The functional performance of SMA-based prototype systems, in terms of\nleak tightness, thermal mounting/dismounting and thermal outgassing properties, has been\nalready verified. Radiation-induced microstructural damages usually cause losses in the\nmechanical properties, such as embrittlement in conventional engineering metals. The particle\nradiation effects on the functional characteristics of SMAs, in terms of microstructural transition\nmechanisms, represent a key issue for their application in critical accelerators areas. To this aim,\nspecific research activities are being carried out at CERN for capturing the evolution of SMA\nmechanical and functional properties during and/or after particle irradiation. In this preliminary\nstudy, a few selected SMA-based prototype UHV chambers, have been exposed to a high-energy\nmixed particle field (up to \u223c140 kGy of absorbed dose) at the CERN high-energy accelerator\nmixed-field (CHARM) facility. The results, in terms of post-irradiation measurements, have\nrevealed that leak tightness and thermal dismounting are unaffected by irradiation" }); // ]]> </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=zh_CN">搜寻</a> :: <a class="footer" href="https://cds.cern.ch/submit?ln=zh_CN">提交</a> :: <a class="footer" href="https://cds.cern.ch/youraccount/display?ln=zh_CN">个人化</a> :: <a class="footer" href="https://cds.cern.ch/help/?ln=zh_CN">帮助</a> :: <a class="footer" href="https://cern.service-now.com/service-portal?id=privacy_policy&se=CDS-Service" target="_blank">Privacy Notice</a> <br /> 伺服器系统： <a class="footer" href="http://invenio-software.org/">Invenio</a> <br /> 管理者： <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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