ISSN:
1089-7623
Source:
AIP Digital Archive
Topics:
Physics
,
Electrical Engineering, Measurement and Control Technology
Notes:
A grazing incidence spectrograph which operates in the EUV (40 to 350 A(ring)) that has multispectral, temporal, and spatial resolving capabilities is being constructed for plasma fusion diagnostics. The spectrograph achieves a simultaneous spectral coverage of 20 and 60 A(ring) when centered on 40 and 350 A(ring), respectively, with ∼1-A(ring) resolution. The detector consists of an image intensifier fiber optically coupled to 3 area array detectors (CCDS), which can be read out in 5 ms, thereby determining the time resolution of the instrument. The spatial resolution is accomplished by using the astigmatism inherent to a concave grating in grazing incidence, coupled with the pinhole camera effect produced by an entrance slit of limited height. The spectrograph can view ∼54 cm of plasma which is 2 m away from the entrance slit with 4- and 8-cm resolution at 350 and 40 A(ring), respectively. We will present the results of a feasibility study, the spectrograph design, and the results of the data reduction and interpretation codes which are under development.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.1138078
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