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Fusion Science and Technology
Latest News
NNSA awards BWXT $1.5B defense fuels contract
The Department of Energy’s National Nuclear Security Administration has awarded BWX Technologies a contract valued at $1.5 billion to build a Domestic Uranium Enrichment Centrifuge Experiment (DUECE) pilot plant in Tennessee in support of the administration’s efforts to build out a domestic supply of unobligated enriched uranium for defense-related nuclear fuel.
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.
