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Grazing incidence time‐resolving spectrograph for magnetic fusion plasma diagnostics

 

作者: W. L. Hodge,   B. C. Stratton,   H. W. Moos,  

 

期刊: Review of Scientific Instruments  (AIP Available online 1984)
卷期: Volume 55, issue 1  

页码: 16-24

 

ISSN:0034-6748

 

年代: 1984

 

DOI:10.1063/1.1137576

 

出版商: AIP

 

数据来源: AIP

 

摘要:

A time‐resolving grazing incidence spectrograph based on an image intensified photodiode array detector has been constructed and has demonstrated its utility as a fusion plasma diagnostic. The total wavelength coverage is 15–360 A˚ with 0.7 A˚ resolution (line profile FWHM); portions of this range may be observed during a single plasma discharge with a bandwidth of ∼40 A˚ when the detector is centered at 40 A˚ and ∼80 A˚ with it centered at 200 A˚. Integration times from 5.4 to 13.1 ms are available when the entire photodiode array is read out; integration times as short as 1 ms can be obtained for a few lines of interest through the readout of selected photodiodes. The spectrograph has been radiometrically calibrated over the 60‐ to 360‐A˚ range at the NBS SURF II electron storage ring and is currently in operation on the Princeton Large Torus (PLT) tokamak.

 

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