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Performance of a Nb(3)Sn Quadrupole Under High Stress

Future upgrades of the Large Hadron Collider (LHC) will require large aperture and high gradient quadrupoles. Nb(3)Sn is the most viable option for this application but is also known for its strain sensitivity. In high field magnets, with magnetic fields above 12 T, the Lorentz forces will generate...

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Detalles Bibliográficos
Autores principales: Felice, H, Rossi, L, Ferracin, P, De Rijk, G, Bajko, M, Caspi, S, Bingham, B, Giloux, C, Bordini, B, Milanese, A, Bottura, L, Sabbi, G L, Hafalia, R, Godeke, A, Dietderich, D
Lenguaje:eng
Publicado: 2011
Materias:
XX
Acceso en línea:https://dx.doi.org/10.1109/TASC.2010.2090116
http://cds.cern.ch/record/1399771
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author Felice, H
Rossi, L
Ferracin, P
De Rijk, G
Bajko, M
Caspi, S
Bingham, B
Giloux, C
Bordini, B
Milanese, A
Bottura, L
Sabbi, G L
Hafalia, R
Godeke, A
Dietderich, D
author_facet Felice, H
Rossi, L
Ferracin, P
De Rijk, G
Bajko, M
Caspi, S
Bingham, B
Giloux, C
Bordini, B
Milanese, A
Bottura, L
Sabbi, G L
Hafalia, R
Godeke, A
Dietderich, D
author_sort Felice, H
collection CERN
description Future upgrades of the Large Hadron Collider (LHC) will require large aperture and high gradient quadrupoles. Nb(3)Sn is the most viable option for this application but is also known for its strain sensitivity. In high field magnets, with magnetic fields above 12 T, the Lorentz forces will generate mechanical stresses that may exceed 200 MPa in the windings. The existing measurements of critical current versus strain of Nb(3)Sn strands or cables are not easily applicable to magnets. In order to investigate the impact of high mechanical stress on the quench performance, a series of tests was carried out within a LBNL/CERN collaboration using the magnet TQS03 (a LHC Accelerator Research Program (LARP) 1-meter long, 90-mm aperture Nb(3)Sn quadrupole). The magnet was tested four times at CERN under various pre-stress conditions. The average mechanical compressive azimuthal pre-stress on the coil at 4.2 K ranged from 120 MPa to 200 MPa. This paper reports on the magnet performance during the four tests focusing on the relation between pre-stress conditions and the training plateau.
id cern-1399771
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2011
record_format invenio
spelling cern-13997712019-09-30T06:29:59Zdoi:10.1109/TASC.2010.2090116http://cds.cern.ch/record/1399771engFelice, HRossi, LFerracin, PDe Rijk, GBajko, MCaspi, SBingham, BGiloux, CBordini, BMilanese, ABottura, LSabbi, G LHafalia, RGodeke, ADietderich, DPerformance of a Nb(3)Sn Quadrupole Under High StressXXXXFuture upgrades of the Large Hadron Collider (LHC) will require large aperture and high gradient quadrupoles. Nb(3)Sn is the most viable option for this application but is also known for its strain sensitivity. In high field magnets, with magnetic fields above 12 T, the Lorentz forces will generate mechanical stresses that may exceed 200 MPa in the windings. The existing measurements of critical current versus strain of Nb(3)Sn strands or cables are not easily applicable to magnets. In order to investigate the impact of high mechanical stress on the quench performance, a series of tests was carried out within a LBNL/CERN collaboration using the magnet TQS03 (a LHC Accelerator Research Program (LARP) 1-meter long, 90-mm aperture Nb(3)Sn quadrupole). The magnet was tested four times at CERN under various pre-stress conditions. The average mechanical compressive azimuthal pre-stress on the coil at 4.2 K ranged from 120 MPa to 200 MPa. This paper reports on the magnet performance during the four tests focusing on the relation between pre-stress conditions and the training plateau.oai:cds.cern.ch:13997712011
spellingShingle XX
XX
Felice, H
Rossi, L
Ferracin, P
De Rijk, G
Bajko, M
Caspi, S
Bingham, B
Giloux, C
Bordini, B
Milanese, A
Bottura, L
Sabbi, G L
Hafalia, R
Godeke, A
Dietderich, D
Performance of a Nb(3)Sn Quadrupole Under High Stress
title Performance of a Nb(3)Sn Quadrupole Under High Stress
title_full Performance of a Nb(3)Sn Quadrupole Under High Stress
title_fullStr Performance of a Nb(3)Sn Quadrupole Under High Stress
title_full_unstemmed Performance of a Nb(3)Sn Quadrupole Under High Stress
title_short Performance of a Nb(3)Sn Quadrupole Under High Stress
title_sort performance of a nb(3)sn quadrupole under high stress
topic XX
XX
url https://dx.doi.org/10.1109/TASC.2010.2090116
http://cds.cern.ch/record/1399771
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