Quenches and resulting thermal and mechanical effects on epoxy impregnated Nb{sub 3}Sn high field magnets

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Thermal and its resulting mechanical stress due to quenches inside the Epoxy impregnated Nb{sub 3}Sn high field magnets are studied with a combination of a quench simulation program, and ANSYS program. We use the geometry of the high field cosine theta type dipole magnets with one meter and 10 meter length. The turns, where quenches started, are excessively heated up, up to 100 K to 300 K, depending on the coil length and time delay. The non quenching turns and surrounding material are not heated substantially. This elevated temperature and its gradient cause the excessive local stress in the quenching ... continued below

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80 Kilobytes pages

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al., Ryuji Yamada et August 3, 2001.

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Thermal and its resulting mechanical stress due to quenches inside the Epoxy impregnated Nb{sub 3}Sn high field magnets are studied with a combination of a quench simulation program, and ANSYS program. We use the geometry of the high field cosine theta type dipole magnets with one meter and 10 meter length. The turns, where quenches started, are excessively heated up, up to 100 K to 300 K, depending on the coil length and time delay. The non quenching turns and surrounding material are not heated substantially. This elevated temperature and its gradient cause the excessive local stress in the quenching conductors and their insulation material. The stress and strain in the conductor as well as in the insulation become excessive, and they are studied using the ANSYS stress analysis.

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80 Kilobytes pages

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  • Particle Accelerator Conference 2001, Chicago, IL (US), 06/18/2001--06/22/2001

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  • Report No.: FERMILAB-Conf-01/146-E
  • Grant Number: AC02-76CH03000
  • Office of Scientific & Technical Information Report Number: 783971
  • Archival Resource Key: ark:/67531/metadc715411

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  • August 3, 2001

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  • Sept. 29, 2015, 5:31 a.m.

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  • April 1, 2016, 5:44 p.m.

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al., Ryuji Yamada et. Quenches and resulting thermal and mechanical effects on epoxy impregnated Nb{sub 3}Sn high field magnets, article, August 3, 2001; Batavia, Illinois. (digital.library.unt.edu/ark:/67531/metadc715411/: accessed September 22, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.