Although experiments have demonstrated a feasibility of the electron-cyclotron-wave (ECW) non-inductive current start-up, the physical mechanism of the current start-up remains unclear, particularly the role of the preferential confinement of collisionless tail electron currents ( jTPC) and vertical charge-separation currents ( jVTF) . Therefore, jTPC and jVTF were observed using limiter probes during the ECW non-inductive current start-up on an ENN XunLong-50 (EXL-50) spherical torus to understand the significance of these values. It was found that jTPC increased and jVTF decreased during start-up, indicating a dominant role played by jTPC in this process. Furthermore, it was found that the product of the gas pressure and vertical magnetic field has a limit for the ECW non-inductive current start-up. Finally, we found that the ECW non-inductive current start-up can be realized only for sufficiently low vertical fields and gas pressures in EXL-50.
Experimental study of non-inductive current start-up using electron cyclotron wave on EXL-50 spherical torus / Wang, Mingyuan; Guo, Dong; Shi, Yuejiang; Chen, Bo; Liu, Bing; Song, Shaodong; Zhao, Xin; Song, Yunyang; Liu, Wenjun; Guan, Yupeng; Banerjee, Debabrata; Li, Songjian; Sun, Tiantian; Li, Yingying; Tian, Xiaomin; Zhu, Yubao; Song, Xianming; Dong, Jiaqi; Yuan, Baoshan; Martin Peng, Y-K. - In: PLASMA PHYSICS AND CONTROLLED FUSION. - ISSN 0741-3335. - 64:7(2022). [10.1088/1361-6587/ac70fb]
Experimental study of non-inductive current start-up using electron cyclotron wave on EXL-50 spherical torus
Liu, Bing;Zhao, Xin;Banerjee, Debabrata;
2022
Abstract
Although experiments have demonstrated a feasibility of the electron-cyclotron-wave (ECW) non-inductive current start-up, the physical mechanism of the current start-up remains unclear, particularly the role of the preferential confinement of collisionless tail electron currents ( jTPC) and vertical charge-separation currents ( jVTF) . Therefore, jTPC and jVTF were observed using limiter probes during the ECW non-inductive current start-up on an ENN XunLong-50 (EXL-50) spherical torus to understand the significance of these values. It was found that jTPC increased and jVTF decreased during start-up, indicating a dominant role played by jTPC in this process. Furthermore, it was found that the product of the gas pressure and vertical magnetic field has a limit for the ECW non-inductive current start-up. Finally, we found that the ECW non-inductive current start-up can be realized only for sufficiently low vertical fields and gas pressures in EXL-50.File | Dimensione | Formato | |
---|---|---|---|
Wang_2022_Plasma_Phys._Control._Fusion_64_075006.pdf
accesso riservato
Tipologia:
2a Post-print versione editoriale / Version of Record
Licenza:
Non Pubblico - Accesso privato/ristretto
Dimensione
516.16 kB
Formato
Adobe PDF
|
516.16 kB | Adobe PDF | Visualizza/Apri Richiedi una copia |
Pubblicazioni consigliate
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
https://hdl.handle.net/11583/2996649