Abstract
High temperature superconducting (HTS) magnets wound with REBCO wires are used in many applications, and the superconducting magnet which is operated in persistent current mode has many advantages. Therefore, we have been developing compact NMR relaxometry devices using HTS coils operated at liquid nitrogen temperature. The required strength and homogeneity of magnetic field of proposed NMR relaxometry devices are 1.5 T and 150 ppm/cm3 respectively. The proposed HTS magnet for NMR relaxometry device consists with stacked HTS double pancake coils wound with REBCO wires and operated by persistent current mode (PCM) using superconducting joint between REBCO wires. In PCM operation, the ability of persistent current switch (PCS) is very important, so, in this study, the thermal properties of YBCO wire against the various thermal inputs by heater were investigated experimentally to design the PCS for PCM HTS magnets. The thermal behaviors of the YBCO wires were measured as functions of amount of heat input using two types of epoxy resin. The current bypassing properties on the YBCO loop coil with developed PCS were studied experimentally.
| Original language | English |
|---|---|
| Article number | 012087 |
| Journal | Journal of Physics: Conference Series |
| Volume | 871 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - Jul 26 2017 |
| Event | 29th International Symposium on Superconductivity, ISS 2016 - Tokyo, Japan Duration: Dec 13 2016 → Dec 15 2016 |
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ASJC Scopus subject areas
- Physics and Astronomy(all)
Cite this
Study on the Persistent Current Switch in HTS Coils Wound with 2G Wire for Compact NMR Magnets. / Sugo, K.; Kim, Seok Beom; Nomura, R.; Ueda, Hiroshi.
In: Journal of Physics: Conference Series, Vol. 871, No. 1, 012087, 26.07.2017.Research output: Contribution to journal › Conference article
}
TY - JOUR
T1 - Study on the Persistent Current Switch in HTS Coils Wound with 2G Wire for Compact NMR Magnets
AU - Sugo, K.
AU - Kim, Seok Beom
AU - Nomura, R.
AU - Ueda, Hiroshi
PY - 2017/7/26
Y1 - 2017/7/26
N2 - High temperature superconducting (HTS) magnets wound with REBCO wires are used in many applications, and the superconducting magnet which is operated in persistent current mode has many advantages. Therefore, we have been developing compact NMR relaxometry devices using HTS coils operated at liquid nitrogen temperature. The required strength and homogeneity of magnetic field of proposed NMR relaxometry devices are 1.5 T and 150 ppm/cm3 respectively. The proposed HTS magnet for NMR relaxometry device consists with stacked HTS double pancake coils wound with REBCO wires and operated by persistent current mode (PCM) using superconducting joint between REBCO wires. In PCM operation, the ability of persistent current switch (PCS) is very important, so, in this study, the thermal properties of YBCO wire against the various thermal inputs by heater were investigated experimentally to design the PCS for PCM HTS magnets. The thermal behaviors of the YBCO wires were measured as functions of amount of heat input using two types of epoxy resin. The current bypassing properties on the YBCO loop coil with developed PCS were studied experimentally.
AB - High temperature superconducting (HTS) magnets wound with REBCO wires are used in many applications, and the superconducting magnet which is operated in persistent current mode has many advantages. Therefore, we have been developing compact NMR relaxometry devices using HTS coils operated at liquid nitrogen temperature. The required strength and homogeneity of magnetic field of proposed NMR relaxometry devices are 1.5 T and 150 ppm/cm3 respectively. The proposed HTS magnet for NMR relaxometry device consists with stacked HTS double pancake coils wound with REBCO wires and operated by persistent current mode (PCM) using superconducting joint between REBCO wires. In PCM operation, the ability of persistent current switch (PCS) is very important, so, in this study, the thermal properties of YBCO wire against the various thermal inputs by heater were investigated experimentally to design the PCS for PCM HTS magnets. The thermal behaviors of the YBCO wires were measured as functions of amount of heat input using two types of epoxy resin. The current bypassing properties on the YBCO loop coil with developed PCS were studied experimentally.
UR - http://www.scopus.com/inward/record.url?scp=85027966156&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85027966156&partnerID=8YFLogxK
U2 - 10.1088/1742-6596/871/1/012087
DO - 10.1088/1742-6596/871/1/012087
M3 - Conference article
AN - SCOPUS:85027966156
VL - 871
JO - Journal of Physics: Conference Series
JF - Journal of Physics: Conference Series
SN - 1742-6588
IS - 1
M1 - 012087
ER -