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Development of a real-time process gas analysis system using a semiconductor laser
https://repo.qst.go.jp/records/80993
https://repo.qst.go.jp/records/8099343db15b7-553e-4c61-9e37-85a46e75a8b2
| Item type | 会議発表用資料 / Presentation(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2020-11-16 | |||||
| タイトル | ||||||
| タイトル | Development of a real-time process gas analysis system using a semiconductor laser | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| 資源タイプ | ||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_c94f | |||||
| 資源タイプ | conference object | |||||
| アクセス権 | ||||||
| アクセス権 | metadata only access | |||||
| アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
| 著者 |
Ohira, Shigeru
× Ohira, Shigeru× Edao, Yuuki× Isobe, Kanetsugu× Iwai, Yasunori× Ohira, Shigeru× Edao, Yuuki× Isobe, Kanetsugu× Iwai, Yasunori |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | In the fuel cycle of ITER and future fusion reactors, which consists of processes which are fueling, burning (by fusion reaction), vacuum pumping, purification (with recovery from tritiated impurities), isotope separation and storage, tritium accountancy control will be required from the viewpoint of operation and safety. Under ITER-EDA, as one of activities to establish the technological basis for tritium tracking and process system control, a remote and multi-location analysis system of hydrogen isotopes and tritiated molecular impurities in process gases by application of laser Raman spectroscopy was developed and validated at Tritium Process Laboratory (TPL) of JAEA [1]. Then, we had validated followability to process gas composition change and a detection limit of T2 gas of less than 1 kPa with an optimized system. More than 20 years after that development, great progress of laser and detection systems (especially, semiconductor lasers and Peltier-cooled CCD detectors, which have become very conventional and of high performance) has been achieved, which will enable us to make the system much simpler and conventional. A prototype system has been made at TPL, which consists of a semiconductor laser (488 nm, 200 mW, size: 31 mm×32.5 mm×63.5 mm), spectroscope (FL: 460 mm, 1200/mm grating) with a Peltier-cooled CCD detector, and an optical system. Results of some preliminary tests being conducted to confirm sensitivity (detection limits), stability, accuracy with static and dynamic test systems are presented. | |||||
| 会議概要（会議名, 開催地, 会期, 主催者等） | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | 3rd Asia Pacific Symposium on Tritium Science (APSOT-3) | |||||
| 発表年月日 | ||||||
| 日付 | 2020-11-03 | |||||
| 日付タイプ | Issued | |||||
