TY - JOUR
T1 - Accelerating the magnetic island by the modulated resonant magnetic perturbation for the disruption avoidance on J-TEXT
AU - J-TEXT team
AU - Li, Da
AU - Wang, Nengchao
AU - Ding, Yonghua
AU - Yu, Qingquan
AU - Li, Mao
AU - Hu, Qiming
AU - He, Ying
AU - Mao, Feiyue
AU - Shen, Chengshuo
AU - Jia, Ruo
AU - Huang, Zhuo
AU - Zhou, Song
AU - Li, Shuhao
AU - Bala, Abba Alhaji
AU - Chen, Zhipeng
AU - Chen, Zhongyong
AU - Yang, Zhoujun
AU - Rao, Bo
AU - Jiang, Zhonghe
AU - Yi, Lin
AU - Yu, Kexun
AU - Pan, Yuan
N1 - Publisher Copyright:
© 2022 IOP Publishing Ltd.
PY - 2022/10
Y1 - 2022/10
N2 - The acceleration of the magnetic island rotation by the modulated resonant magnetic perturbation (MRMP) has been studied in J-TEXT tokamak experiments. After applying the MRMP, the phase difference between the tearing mode (TM) and MRMP, Δξ, oscillated near the effective phase difference, Δξ eff, which was defined as the time averaged value of Δξ. When the Δξ eff was closed to the—π/2, the MRMP only contributed an accelerating torque on the TM. As the result, the TM rotation frequency was increased by a few kilohertz for the optimized relative phase by small RMPs of the order of 10−5 of the toroidal field and the locked mode induced disruption was avoided. It is found that the TM rotation could be increased to a higher frequency by applying a stronger MRMP.
AB - The acceleration of the magnetic island rotation by the modulated resonant magnetic perturbation (MRMP) has been studied in J-TEXT tokamak experiments. After applying the MRMP, the phase difference between the tearing mode (TM) and MRMP, Δξ, oscillated near the effective phase difference, Δξ eff, which was defined as the time averaged value of Δξ. When the Δξ eff was closed to the—π/2, the MRMP only contributed an accelerating torque on the TM. As the result, the TM rotation frequency was increased by a few kilohertz for the optimized relative phase by small RMPs of the order of 10−5 of the toroidal field and the locked mode induced disruption was avoided. It is found that the TM rotation could be increased to a higher frequency by applying a stronger MRMP.
KW - accelerating tearing mode
KW - disruption avoidance
KW - modulated resonant magnetic perturbation
UR - https://www.scopus.com/pages/publications/85138018853
UR - https://www.scopus.com/inward/citedby.url?scp=85138018853&partnerID=8YFLogxK
U2 - 10.1088/1361-6587/ac8b32
DO - 10.1088/1361-6587/ac8b32
M3 - Article
AN - SCOPUS:85138018853
SN - 0741-3335
VL - 64
JO - Plasma Physics and Controlled Fusion
JF - Plasma Physics and Controlled Fusion
IS - 10
M1 - 105007
ER -