Initialising ...
Initialising ...
Initialising ...
Initialising ...
Initialising ...
Initialising ...
Initialising ...
Hatae, Takaki; Yatsuka, Eiichi; Hayashi, Toshimitsu; Yoshida, Hidetsugu*; Ono, Takehiro; Kusama, Yoshinori
Review of Scientific Instruments, 83(10), p.10E344_1 - 10E344_3, 2012/10
Times Cited Count：16 Percentile：55.29(Instruments & Instrumentation)A prototype YAG laser system for the edge Thomson scattering system in ITER has been newly developed. Performance of the laser amplifier was improved by using flow tubes made of samarium-doped glass; the small signal gain reached 20 at its maximum. As a result, an output energy of 7.66 J at 100 Hz was successfully achieved, and the performance exceeded the target performance (5 J, 100 Hz).
Tojo, Hiroshi; Hatae, Takaki; Yatsuka, Eiichi; Itami, Kiyoshi
Review of Scientific Instruments, 83(10), p.10E346_1 - 10E346_3, 2012/10
Times Cited Count：0 Percentile：0.00(Instruments & Instrumentation)Arakawa, Hiroyuki; Kawano, Yasunori; Itami, Kiyoshi
Review of Scientific Instruments, 83(10), p.10E345_1 - 10E345_3, 2012/10
Times Cited Count：1 Percentile：6.54(Instruments & Instrumentation)Yatsuka, Eiichi; Hatae, Takaki; Fujie, Daijiro*; Kurokawa, Atsuo*; Kusama, Yoshinori
Review of Scientific Instruments, 83(10), p.10E328_1 - 10E328_3, 2012/07
Times Cited Count：2 Percentile：11.45(Instruments & Instrumentation)On the edge Thomson scattering (TS) system in ITER, the filter polychromator is used for dispersing the scattered radiation. Since the signal in TS system is very small, it is crucial to reduce the signal loss from the collection optics to the spectrometer. A band of wavelength in the signal is extracted by an interference filter, and the remaining part is reflected at the interference filter. On the conventional polychromator, a number of reflections are necessary for extracting all wavelength bands. We proposed a new type of polychromator. On the new polychromator, both transmitted and reflected signal from an interference filter are dispersed into transmitted and reflected parts again. It enables to reduce the number of reflection at the interference filters. We showed it is possible to apply in the edge TS system in ITER by setting the injection angle of signal light into the interference filters to be approximately less than 10 degrees.
