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Search Results: Records 1-8 displayed on this page of 8
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Journal Articles

Development of laser beam injection system for the Edge Thomson Scattering (ETS) in ITER

Yatsuka, Eiichi; Hatae, Takaki; Suito, Satoshi*; Ohara, Miyuki*; Hagita, Koji*; Inoue, Kazunori*; Bassan, M.*; Walsh, M.*; Itami, Kiyoshi

Journal of Instrumentation (Internet), 11(1), p.C01006_1 - C01006_12, 2016/01

 Times Cited Count:6 Percentile:39.69(Instruments & Instrumentation)

Journal Articles

Enhancement of resistance against high energy laser pulse injection with chevron beam dump

Yatsuka, Eiichi; Hatae, Takaki; Bassan, M.*; Vayakis, G.*; Walsh, M.*; Itami, Kiyoshi

Fusion Engineering and Design, 100, p.461 - 467, 2015/11

 Times Cited Count:5 Percentile:48.17(Nuclear Science & Technology)

Journal Articles

Progresses in development of the ITER edge Thomson scattering system

Yatsuka, Eiichi; Bassan, M.*; Hatae, Takaki; Ishikawa, Masao; Shimada, Takahiko; Vayakis, G.*; Walsh, M.*; Scannell, R.*; Huxford, R.*; Bilkova, P.*; et al.

Journal of Instrumentation (Internet), 8(12), p.C12001_1 - C12001_10, 2013/12

 Times Cited Count:6 Percentile:34.98(Instruments & Instrumentation)

Journal Articles

Chevron beam dump for ITER edge Thomson scattering system

Yatsuka, Eiichi; Hatae, Takaki; Vayakis, G.*; Bassan, M.*; Itami, Kiyoshi

Review of Scientific Instruments, 84(10), p.103503_1 - 103503_6, 2013/10

 Times Cited Count:9 Percentile:46.22(Instruments & Instrumentation)

Oral presentation

Recent progress in development of the edge Thomson scattering in ITER

Hatae, Takaki; Yatsuka, Eiichi; Bassan, M.*; Vayakis, G.*; Walsh, M.*; Itami, Kiyoshi

no journal, , 

no abstracts in English

Oral presentation

Development of beam dump for the edge Thomson scattering in ITER

Yatsuka, Eiichi; Hatae, Takaki; Kitazawa, Sin-iti; Vayakis, G.*; Bassan, M.*; Walsh, M.*; Itami, Kiyoshi

no journal, , 

no abstracts in English

Oral presentation

Development of the edge Thomson scattering system in ITER using a high pulse energy and high repetition rate YAG laser

Yatsuka, Eiichi; Hatae, Takaki; Bassan, M.*; Vayakis, G.*; Walsh, M.*; Itami, Kiyoshi

no journal, , 

no abstracts in English

Oral presentation

Development of high energy laser resistance beam dump for the ITER Edge Thomson Scattering

Yatsuka, Eiichi; Hatae, Takaki; Takeyama, Shigeharu; Bassan, M.*; Vayakis, G.*; Walsh, M.*; Itami, Kiyoshi

no journal, , 

In ITER, 10$$^{9}$$ pulses of 5-J laser will be injected during its operation for 20 years. It was concerned that the surface damage was induced due to high incident laser energy density if conventional beam dump would be used. JAEA has proposed and modified the detailed shape of a new type beam dump in which the laser energy is reflected numerous times and absorbed gradually due to low absorptance of the S-polarized light. The new type beam dump withstands 10$$^{9}$$ pulses injection while conventional beam dump withstands 10$$^{4}$$ pulses (100 seconds) injection. In order to verify this design for drastically extending the beam dump life time, laser resistance test for molybdenum that is the beam dump material was carried out. As expected in design, beam energy absorption density is dominant factor for laser induced damage. Moreover, it was confirmed that interlaminating the bent sheets and shims and their diffuse bonding enable to manufacture complicated shape of the beam dump as designed.

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