[Table of Contents]

Plasma and Fusion Research

Volume 5, S1013 (2010)

Regular Articles

Present Progress of Plasma Transport Study on HL-2A
Xuantong DING, Weiwen XIAO, Xiaolan ZOU1), Hongjuan SUN, Yi LIU, Lianghua YAO, Jun RAO, Beibing FENG, Zetian LIU, Yan ZHOU Qingwei YANG, Longwen YAN, Jiaqi DONG, Xuru DUAN and HL-2A team
Southwestern Institute of Physics, P.O. Box 432, Chengdu, China
1)
Association Euratom-CEA, CEA/DSM/IRFM, CEA/Cadarache, 13018 St Paul-lez-Durance, France
(Received 17 February 2009 / Accepted 22 July 2009 / Published 26 March 2010)

Abstract

The recent experiments of HL-2A tokamak have been focused on studying the physics of turbulence and transport. A spontaneous particle transport barrier has been observed in Ohmic discharges without any external momentum input. The barrier was evidenced by density perturbation study using modulated supersonic molecular beam injection (SMBI) and microwave reflectometry. The new features of the non-local transport effect induced with SMBI have been analyzed. The suppression of m/n = 2/1 tearing modes may be sustained by ECRH modulation at a frequency about 10 Hz. Continuous confinement improvement was observed after the mode suppression.

Keywords

particle transport barrier, non-local transport, supersonic molecular beam injection, electron cyclotron heating

DOI: 10.1585/pfr.5.S1013

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This paper may be cited as follows:

Xuantong DING, Weiwen XIAO, Xiaolan ZOU, Hongjuan SUN, Yi LIU, Lianghua YAO, Jun RAO, Beibing FENG, Zetian LIU, Yan ZHOU Qingwei YANG, Longwen YAN, Jiaqi DONG, Xuru DUAN and HL-2A team, Plasma Fusion Res. 5, S1013 (2010).