Impact of calibration technique on measurement accuracy for the JET core charge-exchange system

被引：42

作者：

Giroud, Carine ^{[1
]}

Meigs, A. G. ^{[1
]}

Negus, C. R. ^{[1
]}

Zastrow, K. -D. ^{[1
]}

Biewer, T. M. ^{[2
]}

Versloot, T. W. ^{[3
]}

机构：

[1] UKAEA Euratom Fus Assoc, Culham Sci Ctr, Abingdon OX14 3DB, Oxon, England

[2] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA

[3] EURATOM, FOM, Inst Plasma Phys Rijnhuizen, Trilateral Euregio Cluster, NL-3430 BE Nieuwegein, Netherlands

[4] 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：

calibration; plasma density; plasma diagnostics; plasma impurities; plasma temperature; plasma toroidal confinement;

D O I：

10.1063/1.2974806

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

The core charge-exchange diagnostic at the Joint European Torus (JET) provides measurements of the impurity ion temperature T(i), toroidal velocity V(Phi), and impurity ion densities n(imp), across the whole minor radius. A contribution to the uncertainty of the measured quantities is the error resulting from the multi-Gaussian fit and photon statistics, usually quoted for each measured data. Absolute intensity calibration and especially alignment of the viewing directions can introduce an important systematic error. The technique adopted at JET to reduce this systematic contribution to the error is presented in this paper. The error in T(i), V(Phi), and n(imp) is then discussed depending on their use.

引用

页数：5

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