ELM characteristics and divertor heat loads in ASDEX Upgrade helium discharges

被引：2

作者：

Scarabosio, A. ^{[1
]}

Fuchs, C. ^{[1
]}

Herrmann, A. ^{[1
]}

Wolfrum, E. ^{[1
]}

机构：

[1] Max Planck Inst Plasma Phys, EURATOM Assoc, D-85748 Garching, Germany

来源：

JOURNAL OF NUCLEAR MATERIALS | 2011年 / 415卷 / 01期

关键词：

H-MODE; LOSSES; ENERGY;

D O I：

10.1016/j.jnucmat.2010.10.062

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Discharges with helium as working gas are the best candidate for reaching the ELMy H-mode regime during the non-nuclear phase in ITER. Yet, little is known on the ELM regime and target loads expected in He plasmas close to L-H power threshold and with a large fraction of tungsten material in the divertor. In this contribution we analyse the ELM characteristics in a set of ASDEX Upgrade He H-mode pulses with carbon and tungsten target tiles. We find that both larger type-l-like and smaller type-III-like ELM can be obtained similar to the D case. Heat loads are similar for both working gases but with tungsten, and in contrast with carbon target, we observe a strong loads reduction at the inner target with no reversal in the loads asymmetry during ELM. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：S877 / S880

页数：4