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Atlanta, GA|Atlanta Marriott Marquis
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Fusion Science and Technology
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The RAIN scale: A good intention that falls short
Radiation protection specialists agree that clear communication of radiation risks remains a vexing challenge that cannot be solved solely by finding new ways to convey technical information.
Earlier this year, an article in Nuclear News described a new radiation risk communication tool, known as the Radiation Index, or, RAIN (“Let it RAIN: A new approach to radiation communication,” NN, Jan. 2025, p. 36). The authors of the article created the RAIN scale to improve radiation risk communication to the general public who are not well-versed in important aspects of radiation exposures, including radiation dose quantities, units, and values; associated health consequences; and the benefits derived from radiation exposures.
Shigeru Tanaka, Masato Akiba, Masanori Araki, Masayuki Dairaku, Hiroshi Horiike, Takao Itoh, Mikito Kawai, Masao Komata, Masaaki Kuriyama, Shigeru Kitamura, Shinzaburo Matsuda, Mamoru Matsuoka, Kiyoshi Mizuhashi, Yutaka Ohuchi, Yoshihiro Ohara, Yoshikazu Okumura, Kiyoshi Shibanuma, Takemasa Shibata, Kazuhiro Watanabe, Russel P. Wells
Fusion Science and Technology | Volume 7 | Number 3 | May 1985 | Pages 391-398
Technical Paper | Magnet System | doi.org/10.13182/FST85-A24558
Articles are hosted by Taylor and Francis Online.
Influence of the magnetic field, which is produced around the JT-60 tokamak, on the performance of the neutral beam injector was experimentally studied using the stray field simulating coils installed around the prototype injector unit. Temperature distributions on the ion dump shifted vertically and the peak values changed in the presence of the field, as expected from the calculation of ion orbits. The shift length and the peak values remained within the permissible level, however, because of the operation of two cancellation coils, one of which was set around the reflecting magnet and another around the neutralizer magnetic shield. The neutral power injected into the beam target decreased by 4 to 5 % during application of the stray field due to the reionization loss of neutral particles. Under operating conditions, the heat load on each component was below the design value and all the components worked without any problems in the presence of stray magnetic field.