Upgrade of the lithium beam diagnostic at JET

被引:14
作者
Brix, M. [1 ]
Dodt, D. [2 ]
Korotkov, A. [1 ]
Morgan, P. [1 ]
Dunai, D. [3 ]
Fischer, R. [2 ]
Meigs, A. [1 ]
Nedzelskiy, I. S. [4 ]
Schweinzer, J. [2 ]
Vince, J. [1 ]
Zoletnik, S. [3 ]
机构
[1] EURATOM CCFE Fus Assoc, Culham Sci Ctr, Abingdon OX14 3DB, Oxon, England
[2] EURATOM Assoc IPP, Max Planck Inst Plasmaphys, D-85748 Garching, Germany
[3] EURATOM, KFKI RMKI, H-1525 Budapest, Hungary
[4] Assoc EURATOM IST, Inst Super Tecn, Inst Plasma & Fusao Nucl, P-1049001 Lisbon, Portugal
基金
英国工程与自然科学研究理事会;
关键词
D O I
10.1063/1.3502320
中图分类号
TH7 [仪器、仪表];
学科分类号
0804 ; 080401 ; 081102 ;
摘要
A 60 kV neutral Li beam is injected into the edge plasma of JET to measure the electron density. The beam observation system has been improved by replacing a Czerny-Turner spectrometer with a high-resolution transmission-grating spectrometer and a fast back-illuminated frame-transfer camera. The larger throughput of the spectrometer, the increased sensitivity, and the faster readout of the new camera allow inter-ELM (edge localized mode) measurements (frame rate of 100 Hz). The calibration of the setup, as well as an improved spectral fitting technique in the presence of carbon background radiation, is discussed in detail. The density calculation is based on a statistical analysis method. Results are presented for different plasma scenarios. [doi:10.1063/1.3502320]
引用
收藏
页数:4
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