Modeling of solenoid-free start-up using 2nd harmonic electron cyclotron heating and current drive in QUEST

M. Ono, N. Bertelli, H. Idei, K. Hanada, T. Onchi, S. Kojima, H. Elserafy

研究成果: Chapter in Book/Report/Conference proceedingConference contribution

2 被引用数 (Scopus)

抄録

A grid-based ECH ST/Tokamak start-up model is being developed where plasma parameters, generated plasma currents, and resulting poloidal magnetic fields are evolved from the vacuum fields. Initially, the current generated is purely pressure driven since the electron temperature is too low for ECCD. The grad-B drift driven current together with the processional currents can then create a closed flux surface configuration and then the bootstrap current in a closed configuration can further enhance the plasma current. After the flux closure, the 2nd harmonic ECH heating efficiency increases with plasma current since the confinement is increased and resulting electron temperature rise would further increase the ECH absorption and plasma current. Once the temperature of hot minority component becomes sufficiently high ~ 1 keV, the ECCD becomes significant for full current ramp-up.

本文言語英語
ホスト出版物のタイトル23rd Topical Conference on Radiofrequency Power in Plasmas
編集者Paul T. Bonoli, Robert I. Pinsker, Xiaojie Wang
出版社American Institute of Physics Inc.
ISBN(電子版)9780735420137
DOI
出版ステータス出版済み - 9 16 2020
イベント23rd Topical Conference on Radiofrequency Power in Plasmas - Hefei, 中国
継続期間: 5 14 20195 17 2019

出版物シリーズ

名前AIP Conference Proceedings
2254
ISSN(印刷版)0094-243X
ISSN(電子版)1551-7616

会議

会議23rd Topical Conference on Radiofrequency Power in Plasmas
国/地域中国
CityHefei
Period5/14/195/17/19

All Science Journal Classification (ASJC) codes

  • 物理学および天文学(全般)

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