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

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.",

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

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

year = "1987",

doi = "10.3327/jaesj.29.1108",

language = "English",

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pages = "1108--1115",

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AU - Shimizu, Masatsugu

AU - Akino, Noboru

AU - Yamamoto, Masahiro

AU - Takatsu, Hideyuki

AU - Ohkubo, Minoru

AU - Ando, Toshiro

AU - Ohta, Mitsuru

AU - Shimizu, Tohru

AU - Kajiura, Soji

AU - Matsumoto, Kiyoshi

PY - 1987

Y1 - 1987

N2 - 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.

AB - 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.

KW - baking

KW - cooling

KW - cooling system

KW - heat transfer

KW - JT-60 tokamak

KW - performance testing

KW - thermonuclear reactor cooling

KW - ultimate pressure

KW - ultrahigh vacuum

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ER -

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

Abstract

Keywords

ASJC Scopus subject areas

Access to Document

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