Implementation of a multichannel soft x-ray diagnostic for electron temperature measurements in TJ-II high-density plasmas

被引：1
|
作者：
Baiao, D. [1 ]
Medina, F. [2 ]
Ochando, M. [2 ]
Pastor, I. [2 ]
Varandas, C. [1 ]
Molinero, A. [3 ]
Chercoles, J. [3 ]
机构：
[1] Univ Tecn Lisboa, Assoc EURATOM IST, Inst Plasmas & Fusao Nucl, Inst Super Tecn, P-1049001 Lisbon, Portugal
[2] Asociac EURATOM CIEMAT, Lab Nacl Fus, Madrid 28040, Spain
[3] Lab Gen Elect & Automat CIEMAT, Madrid 28040, Spain
来源：
REVIEW OF SCIENTIFIC INSTRUMENTS | 2012年 / 83卷 / 10期
关键词：
STELLARATOR; ENERGY;
D O I：
10.1063/1.4729669
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
Based on the multi-foil technique, a multichannel soft x-ray diagnostic for electron temperature measurements has been recently implemented in the TJ-II stellarator. The diagnostic system is composed by four photodiodes arrays with beryllium filters of different thickness. An in-vacuum amplifier board is coupled to each array, aiming at preventing induced noise currents. The Thomson scattering and the vacuum ultraviolet survey diagnostics are used for assessing plasma profiles and composition, being the analysis carried out with the radiation code IONEQ. The electron temperature is determined through the different signal-pair ratios with temporal and spatial resolution. The design and preliminary results from the diagnostic are presented. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4729669]
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页数：3
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