Design, Fabrication and Performance Test of Heating and Cooling System of JT-60 Vacuum Vessel

Masatsugu Shimizu; Noboru Akino; Masahiro Yamamoto; Hideyuki Takatsu; Minoru Ohkubo; Toshiro Ando; Mitsuru Ohta; Tohru Shimizu; Soji Kajiura; Kiyoshi Matsumoto

doi:10.3327/jaesj.29.1108

Design, Fabrication and Performance Test of Heating and Cooling System of JT-60 Vacuum Vessel

Masatsugu Shimizu, Noboru Akino, Masahiro Yamamoto, Hideyuki Takatsu, Minoru Ohkubo, Toshiro Ando, Mitsuru Ohta, Tohru Shimizu, Soji Kajiura, Kiyoshi Matsumoto

Research output: Contribution to journal › Article › peer-review

Abstract

This report describes design, fabrication and performance test of heating and cooling system of JT-60 vacuum vessel. The vacuum vessel was designed to be bakable up to 500°C by electric heaters as a means of ultra-high vacuum treatments, and was required to be cooled down by water or nitrogen gas. Results of the on-site baking test after assembly of the machine showed that the design requirements for the maximum temperature, temperature difference, heating time, ultimate vacuum and outgassing rate were satisfied, and no leaks were detected with helium leak testing. It was also found that the slide mechanism for thermal expansion during the heating-up and cooling-down phase functioned satisfactorily.

Original language	English
Pages (from-to)	1108-1115
Number of pages	8
Journal	Journal of the Atomic Energy Society of Japan / Atomic Energy Society of Japan
Volume	29
Issue number	12
DOIs	https://doi.org/10.3327/jaesj.29.1108
Publication status	Published - 1987
Externally published	Yes

Keywords

baking
cooling
cooling system
heat transfer
JT-60 tokamak
performance testing
thermonuclear reactor cooling
ultimate pressure
ultrahigh vacuum
vacuum vessel

ASJC Scopus subject areas

Nuclear Energy and Engineering

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10.3327/jaesj.29.1108

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Design, Fabrication and Performance Test of Heating and Cooling System of JT-60 Vacuum Vessel. / Shimizu, Masatsugu; Akino, Noboru; Yamamoto, Masahiro; Takatsu, Hideyuki; Ohkubo, Minoru; Ando, Toshiro; Ohta, Mitsuru; Shimizu, Tohru; Kajiura, Soji; Matsumoto, Kiyoshi.

In: Journal of the Atomic Energy Society of Japan / Atomic Energy Society of Japan, Vol. 29, No. 12, 1987, p. 1108-1115.

Research output: Contribution to journal › Article › peer-review

Shimizu, Masatsugu ; Akino, Noboru ; Yamamoto, Masahiro ; Takatsu, Hideyuki ; Ohkubo, Minoru ; Ando, Toshiro ; Ohta, Mitsuru ; Shimizu, Tohru ; Kajiura, Soji ; Matsumoto, Kiyoshi. / Design, Fabrication and Performance Test of Heating and Cooling System of JT-60 Vacuum Vessel. In: Journal of the Atomic Energy Society of Japan / Atomic Energy Society of Japan. 1987 ; Vol. 29, No. 12. pp. 1108-1115.

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abstract = "This report describes design, fabrication and performance test of heating and cooling system of JT-60 vacuum vessel. The vacuum vessel was designed to be bakable up to 500°C by electric heaters as a means of ultra-high vacuum treatments, and was required to be cooled down by water or nitrogen gas. Results of the on-site baking test after assembly of the machine showed that the design requirements for the maximum temperature, temperature difference, heating time, ultimate vacuum and outgassing rate were satisfied, and no leaks were detected with helium leak testing. It was also found that the slide mechanism for thermal expansion during the heating-up and cooling-down phase functioned satisfactorily.",

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