Calibration of a two-color soft x-ray diagnostic for electron temperature measurement

被引：3
|
作者：
Reusch, L. M. [1 ]
Den Hartog, D. J. [1 ]
Franz, P. [2 ]
Goetz, J. [1 ]
McGarry, M. B. [1 ]
Stephens, H. D. [1 ,3 ]
机构：
[1] Univ Wisconsin, Madison, WI 53703 USA
[2] Consorzio RFX, Padua, Italy
[3] Pierce Coll Ft Steilacoom, Lakewood, WA 98498 USA
来源：
REVIEW OF SCIENTIFIC INSTRUMENTS | 2016年 / 87卷 / 11期
关键词：
RADIATION;
D O I：
10.1063/1.4961281
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
The two-color soft x-ray (SXR) tomography diagnostic on the Madison Symmetric Torus is capable of making electron temperature measurements via the double-filter technique; however, there has been a 15% systematic discrepancy between the SXR double-filter (SXRDF) temperature and Thomson scattering (TS) temperature. Here we discuss calibration of the Be filters used in the SXRDF measurement using empirical measurements of the transmission function versus energy at the BESSY II electron storage ring, electron microprobe analysis of filter contaminants, and measurement of the effective density. The calibration does not account for the TS and SXRDF discrepancy, and evidence from experiments indicates that this discrepancy is due to physics missing from the SXRDF analysis rather than instrumentation effects. Published by AIP Publishing.
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页数：3
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