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Title: Recent Test Results of the High Field Nb3Sn Dipole Magnet HD2

Abstract

The 1 m long Nb{sub 3}Sn dipole magnet HD2, fabricated and tested at Lawrence Berkeley National Laboratory, represents a step towards the development of block-type accelerator quality magnets operating in the range of 13-15 T. The magnet design features two coil modules composed of two layers wound around a titanium-alloy pole. The layer 1 pole includes a round cutout to provide room for a bore tube with a clear aperture of 36 mm. After a first series of tests where HD2 reached a maximum bore field of 13.8 T, corresponding to an estimated peak field on the conductor of 14.5 T, the magnet was disassembled and reloaded without the bore tube and with a clear aperture increased to 43 mm. We describe in this paper the magnet training observed in two consecutive tests after the removal of the bore tube, with a comparison of the quench performance with respect to the previous tests. An analysis of the voltage signals recorded before and after training quenches is then presented and discussed, and the results of coil visual inspections reported.

Authors:
; ; ; ; ; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
Accelerator& Fusion Research Division
OSTI Identifier:
1011508
Report Number(s):
LBNL-4409E
Journal ID: ISSN 1051-8223; TRN: US1102251
DOE Contract Number:  
DE-AC02-05CH11231
Resource Type:
Journal Article
Journal Name:
IEEE Trans. Appl. Supercond
Additional Journal Information:
Journal Volume: 20; Journal Issue: 3; Journal ID: ISSN 1051-8223
Country of Publication:
United States
Language:
English
Subject:
75; 43; ACCELERATORS; APERTURES; DESIGN; DIPOLES; MAGNETS; PERFORMANCE; REMOVAL; TRAINING; TITANIUM ALLOYS

Citation Formats

Ferracin, P, Bingham, B, Caspi, S, Cheng, D W, Dietderich, D R, Felice, H, Hafalia, A R, Hannaford, C R, Joseph, J, Lietzke, A F, Lizarazo, J, Sabbi, G, and Wang, X. Recent Test Results of the High Field Nb3Sn Dipole Magnet HD2. United States: N. p., 2009. Web.
Ferracin, P, Bingham, B, Caspi, S, Cheng, D W, Dietderich, D R, Felice, H, Hafalia, A R, Hannaford, C R, Joseph, J, Lietzke, A F, Lizarazo, J, Sabbi, G, & Wang, X. Recent Test Results of the High Field Nb3Sn Dipole Magnet HD2. United States.
Ferracin, P, Bingham, B, Caspi, S, Cheng, D W, Dietderich, D R, Felice, H, Hafalia, A R, Hannaford, C R, Joseph, J, Lietzke, A F, Lizarazo, J, Sabbi, G, and Wang, X. 2009. "Recent Test Results of the High Field Nb3Sn Dipole Magnet HD2". United States. https://www.osti.gov/servlets/purl/1011508.
@article{osti_1011508,
title = {Recent Test Results of the High Field Nb3Sn Dipole Magnet HD2},
author = {Ferracin, P and Bingham, B and Caspi, S and Cheng, D W and Dietderich, D R and Felice, H and Hafalia, A R and Hannaford, C R and Joseph, J and Lietzke, A F and Lizarazo, J and Sabbi, G and Wang, X},
abstractNote = {The 1 m long Nb{sub 3}Sn dipole magnet HD2, fabricated and tested at Lawrence Berkeley National Laboratory, represents a step towards the development of block-type accelerator quality magnets operating in the range of 13-15 T. The magnet design features two coil modules composed of two layers wound around a titanium-alloy pole. The layer 1 pole includes a round cutout to provide room for a bore tube with a clear aperture of 36 mm. After a first series of tests where HD2 reached a maximum bore field of 13.8 T, corresponding to an estimated peak field on the conductor of 14.5 T, the magnet was disassembled and reloaded without the bore tube and with a clear aperture increased to 43 mm. We describe in this paper the magnet training observed in two consecutive tests after the removal of the bore tube, with a comparison of the quench performance with respect to the previous tests. An analysis of the voltage signals recorded before and after training quenches is then presented and discussed, and the results of coil visual inspections reported.},
doi = {},
url = {https://www.osti.gov/biblio/1011508}, journal = {IEEE Trans. Appl. Supercond},
issn = {1051-8223},
number = 3,
volume = 20,
place = {United States},
year = {2009},
month = {10}
}