A NEW METHOD FOR ESTIMATING AND IDENTIFYING SYSTEMATIC-ERROR IN THOMSON SCATTERING DIAGNOSTICS

被引：3

作者：

FAJEMIROKUN, H ^{[1
]}

GOWERS, C ^{[1
]}

NIELSEN, P ^{[1
]}

SALZMANN, H ^{[1
]}

HIRSCH, K ^{[1
]}

机构：

[1] JET JOINT UNDERTAKING,ABINGDON OX14 3EA,OXON,ENGLAND

来源：

REVIEW OF SCIENTIFIC INSTRUMENTS | 1990年 / 61卷 / 10期

关键词：

D O I：

10.1063/1.1141803

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

A method has been developed to identify and estimate systematic error in the calibration of Thomson scattering systems. The basis of the technique is an iterative recalculation of electron temperature using successively more self-consistent calibrations. A computational method was developed to calculate from a large dataset a calibration correction factor for each channel. The correction factor was then applied and the fitting routine rerun on the whole dataset with the new calibration factors. The resulting frequency distribution of chi-squared values was close to the theoretical distribution while the calculated electron temperatures were changed by only 1 to 2%. The technique succeeded in identifying and quantifying errors in a dataset known to be of poor quality.

引用

页码：2849 / 2851

页数：3

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