Neutron emission spectroscopy results for internal transport barrier and mode conversion ion cyclotron resonance heating experiments at JET

被引：13

作者：

Giacomelli, L. ^{[1
]}

Hjalmarsson, A. ^{[1
]}

Kallne, J. ^{[2
]}

Hellesen, C. ^{[1
]}

Tardocchi, M. ^{[2
]}

Gorini, G. ^{[2
]}

Van Eester, D. ^{[3
]}

Lerche, E. ^{[3
]}

Johnson, T. ^{[4
]}

Kiptily, V. ^{[4
]}

Conroy, S. ^{[1
]}

Sunden, E. Andersson ^{[1
]}

Ericsson, G. ^{[1
]}

Johnson, M. Gatu ^{[1
]}

Sjostrand, H. ^{[1
]}

Weiszflog, M. ^{[1
]}

机构：

[1] Uppsala Univ, Dept Phys & Astron, S-75120 Uppsala, Sweden

[2] EURATOM ENEA CNR, Ist Fis Plasma, I-20125 Milan, Italy

[3] TEC Partner, ERM KMS, Plasma Phys Lab, B-1000 Brussels, Belgium

[4] EURATOM UKAEA Assoc, Culham Sci Ctr, Abingdon OX14 3DB, Oxon, England

[5] JET EFDA, Culham Sci Ctr, Abingdon OX14 3DB, Oxon, England

来源：

REVIEW OF SCIENTIFIC INSTRUMENTS | 2008年 / 79卷 / 10期

基金：

英国工程与自然科学研究理事会;

关键词：

fusion reactors; plasma beam injection heating; plasma collision processes; plasma diagnostics; plasma radiofrequency heating; plasma toroidal confinement;

D O I：

10.1063/1.2965009

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

The effect of ion cyclotron resonance heating (ICRH) on ((3)He)D plasmas at JET was studied with the time of flight optimized rate (TOFOR) spectrometer dedicated to 2.5 MeV dd neutron measurements. In internal transport barrier (ITB) plasma experiments with large (3)He concentrations (X((3)He)>15%) an increase in neutron yield was observed after the ITB disappeared but with the auxiliary neutral beam injection and ICRH power still applied. The analysis of the TOFOR data revealed the formation of a high energy (fast) D population in this regime. The results were compared to other mode conversion experiments with similar X((3)He) but slightly different heating conditions. In this study we report on the high energy neutron tails originating from the fast D ions and their correlation with X((3)He) and discuss the light it can shed on ICRH-plasma power coupling mechanisms.

引用

页数：4

共 19 条

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