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Fusion Science and Technology
Latest News
College students help develop waste-measuring device at Hanford
A partnership between Washington River Protection Solutions (WRPS) and Washington State University has resulted in the development of a device to measure radioactive and chemical tank waste at the Hanford Site. WRPS is the contractor at Hanford for the Department of Energy’s Office of Environmental Management.
M. Iwase, S. Kubo, R. Kumazawa, H. Idei, K. Ohkubo, T. Mutoh, T. Watari, K. Nishimura, S. Okamura, K. Matsuoka, T. Minami, I. Yamada, K. Narihara, K. Ida, H. Iguchi
Fusion Science and Technology | Volume 27 | Number 3 | April 1995 | Pages 248-251
Helical Systems | doi.org/10.13182/FST95-A11947080
Articles are hosted by Taylor and Francis Online.
The electron power deposition profile has been estimated experimentally during the ion cyclotron range of frequency (ICRF) heating and the electron cyclotron resonance heating (ECRH) in the compact helical system (CHS). The time evolution of the local electron temperature is measured from the second harmonic electron cyclotron emission (ECE) using super heterodyne radiometer. The absorbed power by electrons has been derived from the change in the slopes of the local electron temperature just before and after the input power is turned off. The power deposition profiles of electrons are compared with results from the calculation code in ICRF experiment. Those results show good agreement. In the ECRH experiment the input power is modulated to reduce the power deposition profile. Those analyses give results that the input power is absorbed around ρ =0.6.