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Yamauchi, Michinori*; Nishitani, Takeo; Ochiai, Kentaro; Morimoto, Yuichi*; Hori, Junichi; Ebisawa, Katsuyuki*; Kasai, Satoshi; Walker, C.*
Review of Scientific Instruments, 74(3), p.1730 - 1734, 2003/03
Times Cited Count：22 Percentile：70.93(Instruments & Instrumentation)no abstracts in English
Nishitani, Takeo; Ebisawa, Katsuyuki*; Kasai, Satoshi; Walker, C.*
Review of Scientific Instruments, 74(3), p.1735 - 1738, 2003/03
Times Cited Count：14 Percentile：58.66(Instruments & Instrumentation)no abstracts in English
laser for ion energy spectrum measurements in JT-60UKondoh, Takashi; Miura, Yukitoshi; Lee, S.*; Richards, R. K.*; Hutchinson, D. P.*; Bennett, C. A.*
Review of Scientific Instruments, 74(3), p.1642 - 1645, 2003/03
Times Cited Count：20 Percentile：68.22(Instruments & Instrumentation)Measurements of energy spectrum and density profile of confined alpha-particles are required for ITER. Several methods have been proposed, however, a measurement technique hasn't been established yet. A collective Thomson scattering (CTS) system based on a pulsed CO laser is being developed to demonstrate feasibility of alpha-particle diagnostics for ITER. The pulse laser (15J, 1
m, 0.6 m) and a wide band (~ 8GHz) heterodyne receiver with a quantum-well infrared photodetector (QWIP) have been developed and installed in the JT-60U tokamak. Stray light is reduced by a notch filter with hot CO gas. Heterodyne receiver is absolutely calibrated using large area blackbody radiation source. Scattered signal from JT-60U plasma has not detected because of electrical noise originated from discharge of the pulsed laser and stray signal caused by impurity of the spectrum of the pulsed laser.
Ochi, Yoshihiro; Golovkin, I.*; Mancini, R.*; Uschmann, I.*; Sunahara, Atsushi*; Nishimura, Hiroaki*; Fujita, Kazuhisa*; Louis, S.*; Nakai, Mitsuo*; Shiraga, Hiroyuki*; et al.
Review of Scientific Instruments, 74(3), p.1683 - 1687, 2003/03
Times Cited Count：10 Percentile：49.39(Instruments & Instrumentation)no abstracts in English
