Development of Thomson Scattering Measurement System for Long Duration Discharges on the QUEST Spherical Tokamak
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- KONO Kaori
- Kyushu University
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- IDO Takeshi
- Kyushu University
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- EJIRI Akira
- The University of Tokyo
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- HANADA Kazuaki
- Kyushu University
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- YUE Qilin
- Kyushu University
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- HASEGAWA Makoto
- Kyushu University
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- PENG Yi
- The University of Tokyo
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- SAKAI Seiya
- Kyushu University
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- IKEZOE Ryuya
- Kyushu University
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- IDEI Hiroshi
- Kyushu University
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- KAWASAKI Syoji
- Kyushu University
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- KURODA Kengoh
- Kyushu University
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- ONCHI Takumi
- Kyushu University
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- NAGASHIMA Yoshihiko
- Kyushu University
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- JANG Seowon
- The University of Tokyo
Description
<p>The Thomson scattering control system has been modified to measure the time evolution of the electron density and temperature profiles during long duration discharges in the QUEST spherical tokamak. The system consists of a signal generator and a control circuit. The former accepts a QUEST main trigger and provides multiple triggers, each of which starts a short-term (e.g. 15 s) measurement. The latter provides triggers to synchronize the oscilloscope and laser oscillation during a short-term measurement. The system was used in 1000 s long duration discharges in QUEST, and the temporal evolutions of density and temperature profiles were obtained successfully. It was found the profiles are stationary after about 300 s.</p>
Journal
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- Plasma and Fusion Research
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Plasma and Fusion Research 18 (0), 1405012-1405012, 2023-02-24
The Japan Society of Plasma Science and Nuclear Fusion Research
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Keywords
Details 詳細情報について
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- CRID
- 1390295348395940864
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- ISSN
- 18806821
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- Text Lang
- en
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- Data Source
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- JaLC
- Crossref
- OpenAIRE
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- Abstract License Flag
- Disallowed