Space‐resolving flat‐field vacuum ultraviolet spectrograph for plasma diagnostics

1994 ◽  
Vol 65 (11) ◽  
pp. 3408-3414 ◽  
Author(s):  
Naohiro Yamaguchi ◽  
Jungo Katoh ◽  
Yukiko Sato ◽  
Tatsuya Aota ◽  
Atsusi Mase ◽  
...  
Keyword(s):  
Plasma Diagnostics ◽  
Vacuum Ultraviolet ◽  
Flat Field

Absolute Calibration of Space- and Time-Resolving Flat-Field Vacuum Ultraviolet Spectrograph for Plasma Diagnostics

2000 ◽  
Vol 39 (Part 1, No. 6A) ◽  
pp. 3609-3613 ◽  
Author(s):  
Yuuji Okamoto ◽  
Masayuki Yoshikawa ◽  
Naohiro Yamaguchi ◽  
Chikara Watabe ◽  
Teruo Tamano ◽  
...  
Keyword(s):  
Plasma Diagnostics ◽  
Vacuum Ultraviolet ◽  
Absolute Calibration ◽  
Space And Time ◽  
Flat Field

Calibration of Time- and Space-Resolving Vacuum Ultraviolet Spectrograph for Plasma Diagnostics in the Tandem Mirror GAMMA 10

1999 ◽  
Vol 38 (Part 1, No. 4A) ◽  
pp. 2137-2140
Author(s):  
Masayuki Yoshikawa ◽  
Katsunori Ikeda ◽  
Yuuji Okamoto ◽  
Eiichiro Kawamori ◽  
Takahiro Ito ◽  
...  
Keyword(s):  
Plasma Diagnostics ◽  
Vacuum Ultraviolet ◽  
Time And Space ◽  
Tandem Mirror

Calibration of space-resolving VUV and soft X-ray spectrographs for plasma diagnostics

1998 ◽  
Vol 5 (3) ◽  
pp. 762-765 ◽  
Author(s):  
Masayuki Yoshikawa ◽  
Naohiro Yamaguchi ◽  
Tatsuya Aota ◽  
Katsunori Ikeda ◽  
Yuuji Okamoto ◽  
...  
Keyword(s):  
Vacuum Ultraviolet ◽  
High Energy ◽  
X Ray ◽  
Confined Plasmas ◽  
High Energy Accelerator ◽  
Magnetically Confined ◽  
Flat Field ◽  
Important Means ◽  
Magnetically Confined Plasmas ◽  
Aberration Corrected

Vacuum ultraviolet (VUV) and soft X-ray measurements are important means of diagnosing impurities in magnetically confined plasmas used in fusion research. Recently, space- and time-resolving flat-field VUV (150–1050 Å) and soft X-ray (20–350 Å) spectrographs have been constructed by using aberration-corrected concave gratings with varied-spacing grooves which give a wide simultaneous spectral coverage on a microchannel-plate intensified detector. Calibration experiments have been performed at beamlines 11A and 11C at the Photon Factory of the High Energy Accelerator Research Organization. The relative efficiency of the VUV spectrograph has been measured for P-polarization geometry in the spectrograph. In the soft X-ray spectrograph, efficiencies have been obtained for several different points of irradiation on the grating along the groove direction and for two (S and P) polarization geometries.

scholarly journals Absolute calibration of vacuum ultraviolet spectrograph system for plasma diagnostics

2004 ◽  
Vol 75 (10) ◽  
pp. 4088-4090 ◽  
Author(s):  
M. Yoshikawa ◽  
Y. Kubota ◽  
T. Kobayashi ◽  
M. Saito ◽  
N. Numada ◽  
...  
Keyword(s):  
Plasma Diagnostics ◽  
Vacuum Ultraviolet ◽  
Absolute Calibration
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