Quench Protection Studies of the 11-T Nb3Sn Dipole for the LHC Upgrade
The planned upgrade of the LHC collimation system foresees additional collimators to be installed in the dispersion suppressor areas. Fermilab and CERN are developing an 11-T Nb 3 Sn dipole to replace some 8.33-T 15-m-long Nb-Ti LHC main dipoles providing longitudinal space for the collimators. In c...
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| Veröffentlicht in: | IEEE transactions on applied superconductivity 2016-06, Vol.26 (4), p.1-5 |
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| creator | Izquierdo Bermudez, S. Savary, F. Willering, G. Zlobin, A. V. Auchmann, B. Bajas, H. Bajko, M. Bordini, B. Bottura, L. Chlachidze, G. Karppinen, M. Rysti, J. |
| description | The planned upgrade of the LHC collimation system foresees additional collimators to be installed in the dispersion suppressor areas. Fermilab and CERN are developing an 11-T Nb 3 Sn dipole to replace some 8.33-T 15-m-long Nb-Ti LHC main dipoles providing longitudinal space for the collimators. In case of a quench, the large stored energy and the low copper stabilizer fraction make the protection of the 11-T Nb 3 Sn dipoles challenging. This paper presents the results of quench protection analysis, including quench protection heater design and efficiency, quench propagation, and coil heating. The numerical results are compared with the experimental data from the 2-m-long Nb 3 Sn dipole models. The validated model is used to predict the current decay and hot spot temperature under operating conditions in the LHC, and the presently foreseen magnet protection scheme is discussed. |
| doi_str_mv | 10.1109/TASC.2016.2536653 |
| format | Article |
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V. ; Auchmann, B. ; Bajas, H. ; Bajko, M. ; Bordini, B. ; Bottura, L. ; Chlachidze, G. ; Karppinen, M. ; Rysti, J.</creator><creatorcontrib>Izquierdo Bermudez, S. ; Savary, F. ; Willering, G. ; Zlobin, A. V. ; Auchmann, B. ; Bajas, H. ; Bajko, M. ; Bordini, B. ; Bottura, L. ; Chlachidze, G. ; Karppinen, M. ; Rysti, J. ; Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)</creatorcontrib><description>The planned upgrade of the LHC collimation system foresees additional collimators to be installed in the dispersion suppressor areas. Fermilab and CERN are developing an 11-T Nb 3 Sn dipole to replace some 8.33-T 15-m-long Nb-Ti LHC main dipoles providing longitudinal space for the collimators. In case of a quench, the large stored energy and the low copper stabilizer fraction make the protection of the 11-T Nb 3 Sn dipoles challenging. This paper presents the results of quench protection analysis, including quench protection heater design and efficiency, quench propagation, and coil heating. The numerical results are compared with the experimental data from the 2-m-long Nb 3 Sn dipole models. The validated model is used to predict the current decay and hot spot temperature under operating conditions in the LHC, and the presently foreseen magnet protection scheme is discussed.</description><identifier>ISSN: 1051-8223</identifier><identifier>EISSN: 1558-2515</identifier><identifier>DOI: 10.1109/TASC.2016.2536653</identifier><identifier>CODEN: ITASE9</identifier><language>eng</language><publisher>New York: IEEE</publisher><subject>Conductors ; Delays ; High field accelerator magnets ; Large Hadron Collider ; LHC upgrade ; PARTICLE ACCELERATORS ; Quench protection ; Resistance heating ; Superconducting magnets ; Temperature measurement</subject><ispartof>IEEE transactions on applied superconductivity, 2016-06, Vol.26 (4), p.1-5</ispartof><rights>Copyright The Institute of Electrical and Electronics Engineers, Inc. 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In case of a quench, the large stored energy and the low copper stabilizer fraction make the protection of the 11-T Nb 3 Sn dipoles challenging. This paper presents the results of quench protection analysis, including quench protection heater design and efficiency, quench propagation, and coil heating. The numerical results are compared with the experimental data from the 2-m-long Nb 3 Sn dipole models. The validated model is used to predict the current decay and hot spot temperature under operating conditions in the LHC, and the presently foreseen magnet protection scheme is discussed.</description><subject>Conductors</subject><subject>Delays</subject><subject>High field accelerator magnets</subject><subject>Large Hadron Collider</subject><subject>LHC upgrade</subject><subject>PARTICLE ACCELERATORS</subject><subject>Quench protection</subject><subject>Resistance heating</subject><subject>Superconducting magnets</subject><subject>Temperature measurement</subject><issn>1051-8223</issn><issn>1558-2515</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2016</creationdate><recordtype>article</recordtype><sourceid>RIE</sourceid><recordid>eNotj8tOwzAQRS0EEqXwAYiNBesUj8eTOMsqUIpU8VDbdZQ4E5qqxCGPBX9PoKzmSvfo6owQ16BmACq-38zXyUwrCGeaMAwJT8QEiGygCeh0zIogsFrjubjour1SYKyhiVi8D1y7nXxrfc-ur3wt1_1QVNxJX8p-xxIg2MiXHNe1fKgaf2BZ-vavWS0TuW0-2qzgS3FWZoeOr_7vVGwXj5tkGaxen56T-SqodIR9AFhQmefoKC6NYxMZ1sSIJUQIqEIgi7lWNrbKxaZwJsyQSozYESFnCqfi9rjru75KO1eN0jvn63p0TwF1ZMYXp-LuCDWt_xq469O9H9p69EohspEylhSM1M2Rqpg5bdrqM2u_09-BMFb4AygfXz0</recordid><startdate>20160601</startdate><enddate>20160601</enddate><creator>Izquierdo Bermudez, S.</creator><creator>Savary, F.</creator><creator>Willering, G.</creator><creator>Zlobin, A. 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V.</au><au>Auchmann, B.</au><au>Bajas, H.</au><au>Bajko, M.</au><au>Bordini, B.</au><au>Bottura, L.</au><au>Chlachidze, G.</au><au>Karppinen, M.</au><au>Rysti, J.</au><aucorp>Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)</aucorp><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Quench Protection Studies of the 11-T Nb3Sn Dipole for the LHC Upgrade</atitle><jtitle>IEEE transactions on applied superconductivity</jtitle><stitle>TASC</stitle><date>2016-06-01</date><risdate>2016</risdate><volume>26</volume><issue>4</issue><spage>1</spage><epage>5</epage><pages>1-5</pages><issn>1051-8223</issn><eissn>1558-2515</eissn><coden>ITASE9</coden><abstract>The planned upgrade of the LHC collimation system foresees additional collimators to be installed in the dispersion suppressor areas. Fermilab and CERN are developing an 11-T Nb 3 Sn dipole to replace some 8.33-T 15-m-long Nb-Ti LHC main dipoles providing longitudinal space for the collimators. In case of a quench, the large stored energy and the low copper stabilizer fraction make the protection of the 11-T Nb 3 Sn dipoles challenging. This paper presents the results of quench protection analysis, including quench protection heater design and efficiency, quench propagation, and coil heating. The numerical results are compared with the experimental data from the 2-m-long Nb 3 Sn dipole models. The validated model is used to predict the current decay and hot spot temperature under operating conditions in the LHC, and the presently foreseen magnet protection scheme is discussed.</abstract><cop>New York</cop><pub>IEEE</pub><doi>10.1109/TASC.2016.2536653</doi><tpages>5</tpages><oa>free_for_read</oa></addata></record> |
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| subjects | Conductors Delays High field accelerator magnets Large Hadron Collider LHC upgrade PARTICLE ACCELERATORS Quench protection Resistance heating Superconducting magnets Temperature measurement |
| title | Quench Protection Studies of the 11-T Nb3Sn Dipole for the LHC Upgrade |
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