TY - JOUR
T1 - Engineering design of the Mini-RT device
AU - Mito, Toshiyuki
AU - Yanagi, Nagato
AU - Hishinuma, Yoshimitsu
AU - Ogawa, Yuichi
AU - Morikawa, Junji
AU - Ohkuni, Kotaro
AU - Iwakuma, Masataka
AU - Uede, Toshio
AU - Nose, Shinichi
AU - Itoh, Ikuo
AU - Fukui, Shigeo
N1 - Funding Information:
Manuscript received August 6, 2002. This work was supported in part by a Grand-in Aid for Scientific Research (#12308019). T. Mito, N. Yanagi, and Y. Hishinuma are with the National Institute for Fusion Science (NIFS), Gifu-ken 509-5292, Japan (e-mail: mito@nifs.ac.jp). Y. Ogawa, J. Morikawa, and K. Ohkuni, are with the University of Tokyo, Tokyo 113-8656, Japan. M. Iwakuma is with Kyushu University, Fukuoka 812-8581, Japan. T. Uede, S. Nose, and I. Itoh are with Fuji Electric Company, Kawasaki 210-8530, Japan. S. Fukui is with CryoVac Company, Ohsaka 555-0013, Japan. Digital Object Identifier 10.1109/TASC.2003.812754
Copyright:
Copyright 2008 Elsevier B.V., All rights reserved.
PY - 2003/6
Y1 - 2003/6
N2 - The plasma experiment apparatus S-RT (Superconducting Ring Trap) is planned for the purpose of high beta plasma confinement research in the University of Tokyo. As a preceding step, Mini-RT, which is the size reduction version of S-RT, has been constructed as a joint research of NIFS, the University of Tokyo, and Kyushu University. In this experiment a magnetic-levitation coil (floating coil) operated in persistent current mode has to levitate for 8 hours in the plasma vacuum vessel. The HTS floating coil wound with a Bi-2223 tape has a diameter of 300 mm and an electromotive force of 50 kA. Since any refrigerant cannot be fed to the coil during the plasma experiment, the coil is designed so that the temperature rise after 8 hours of levitation is less than 40 K with the specific heat of the coil and radiation shield. At the end of the daily plasma experiment, the coil will be drawn down to the maintenance location at the bottom of the plasma vacuum vessel, and it will be re-cooled to 20 K.
AB - The plasma experiment apparatus S-RT (Superconducting Ring Trap) is planned for the purpose of high beta plasma confinement research in the University of Tokyo. As a preceding step, Mini-RT, which is the size reduction version of S-RT, has been constructed as a joint research of NIFS, the University of Tokyo, and Kyushu University. In this experiment a magnetic-levitation coil (floating coil) operated in persistent current mode has to levitate for 8 hours in the plasma vacuum vessel. The HTS floating coil wound with a Bi-2223 tape has a diameter of 300 mm and an electromotive force of 50 kA. Since any refrigerant cannot be fed to the coil during the plasma experiment, the coil is designed so that the temperature rise after 8 hours of levitation is less than 40 K with the specific heat of the coil and radiation shield. At the end of the daily plasma experiment, the coil will be drawn down to the maintenance location at the bottom of the plasma vacuum vessel, and it will be re-cooled to 20 K.
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U2 - 10.1109/TASC.2003.812754
DO - 10.1109/TASC.2003.812754
M3 - Conference article
AN - SCOPUS:0042975274
SN - 1051-8223
VL - 13
SP - 1500
EP - 1503
JO - IEEE Transactions on Applied Superconductivity
JF - IEEE Transactions on Applied Superconductivity
IS - 2 II
T2 - 2002 Applied Superconductivity Conference
Y2 - 4 August 2002 through 9 August 2002
ER -