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Development of a prototype YAG laser amplifier for the edge Thomson scattering system in ITER

ITER周辺トムソン散乱計測装置のための原型YAGレーザー増幅器の開発

波多江 仰紀; 林 利光; 谷塚 英一; 吉田 英次*; 藤田 尚徳*; 中塚 正大*; 小野 武博; 草間 義紀

Hatae, Takaki; Hayashi, Toshimitsu; Yatsuka, Eiichi; Yoshida, Hidetsugu*; Fujita, Hisanori*; Nakatsuka, Masahiro*; Ono, Takehiro; Kusama, Yoshinori

Design of a high average power Nd:YAG laser system and a prototype laser amplifier for the edge Thomson scattering system in ITER was conducted. The target performance is 5 J of output energy and a repetition rate of 100 Hz for the laser system, and 1.6 J of extracted energy for the prototype amplifier. A prototype amplifier was produced, after which the small signal gain and extracted energy reached up to 12.6 and 1.76 J, respectively.

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