TY - GEN
T1 - Repairing and upgrading of the HTS insert in the 18T cryogen-free superconducting magnet
AU - Awaji, S.
AU - Oguro, H.
AU - Watanabe, K.
AU - Hanai, S.
AU - Ioka, S.
AU - Miyazaki, H.
AU - Daibo, M.
AU - Iijima, Y.
AU - Saito, T.
AU - Itoh, M.
N1 - Publisher Copyright:
© 2014 AIP Publishing LLC.
PY - 2014
Y1 - 2014
N2 - Since the development of the 18T cryogen-free superconducting magnet (18T-CSM) at the High Field Laboratory for Superconducting Materials (HFLSM), IMR, Tohoku University, it has been routinely utilized for the various high field researches such as the in-field materials processing and so on. After the Great East Japan Disaster, however, the 18T-CSM is under the repairing due to the serious damages of the system. At this time, a part of the middle Nb 3 Sn section coil and the Bi2223 inner most coil were renewed. The bronze-route Nb 3 Sn coil with a low ac-loss was adopted instead of the previous internal-Sn Nb 3 Sn coil for the reduction of the heat-generation during a field ramping. The new Bi2223 coil will generate the central field of 4.5 T under the background field of 15.5 T by the LTS outer coils, although the previous Bi2223 coil generated 2.5 T. Hence the 18T-CSM was successfully upgraded to the 20T-CSM. In addition to the Bi2223 insert, the Gd123 insert coil is being constructed as well. When the Gd123 insert coil is installed instead of the Bi2223 coil, it will be upgraded to the 22T-CSM from the 20T-CSM.
AB - Since the development of the 18T cryogen-free superconducting magnet (18T-CSM) at the High Field Laboratory for Superconducting Materials (HFLSM), IMR, Tohoku University, it has been routinely utilized for the various high field researches such as the in-field materials processing and so on. After the Great East Japan Disaster, however, the 18T-CSM is under the repairing due to the serious damages of the system. At this time, a part of the middle Nb 3 Sn section coil and the Bi2223 inner most coil were renewed. The bronze-route Nb 3 Sn coil with a low ac-loss was adopted instead of the previous internal-Sn Nb 3 Sn coil for the reduction of the heat-generation during a field ramping. The new Bi2223 coil will generate the central field of 4.5 T under the background field of 15.5 T by the LTS outer coils, although the previous Bi2223 coil generated 2.5 T. Hence the 18T-CSM was successfully upgraded to the 20T-CSM. In addition to the Bi2223 insert, the Gd123 insert coil is being constructed as well. When the Gd123 insert coil is installed instead of the Bi2223 coil, it will be upgraded to the 22T-CSM from the 20T-CSM.
KW - Critical current
KW - Cryogen-free superconducting magnet
KW - High temperature superconductor
KW - Mechanical stress
UR - http://www.scopus.com/inward/record.url?scp=84919820630&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84919820630&partnerID=8YFLogxK
U2 - 10.1063/1.4860776
DO - 10.1063/1.4860776
M3 - Conference contribution
AN - SCOPUS:84919820630
T3 - AIP Conference Proceedings
SP - 732
EP - 738
BT - Advances in Cryogenic Engineering - Transactions of the Cryogenic Engineering Conference - CEC, Volume 59
A2 - Breon, Susan
A2 - Marquardt, Jennifer
A2 - Peterson, Thomas
A2 - DiPirro, Michael
A2 - Pfotenhauer, John
A2 - Demko, Jonathan
A2 - Fesmire, James
A2 - Klebaner, Arkadiy
A2 - Yuan, Sidney
A2 - Zeller, Al
A2 - Kittel, Peter
A2 - Nellis, Gregory
A2 - Zagarola, Mark
PB - American Institute of Physics Inc.
T2 - 2013 Joint Cryogenic Engineering and International Cryogenic Materials Conferences, CEC/ICMC 2013
Y2 - 17 June 2013 through 21 June 2013
ER -