期刊
IEEE TRANSACTIONS ON PLASMA SCIENCE
卷 46, 期 6, 页码 2324-2331出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TPS.2018.2825423
关键词
Deuterium experiment; fuel mass balance; heliotron; isotope effect; large helical device (LHD); negative-ion source; neutron diagnostic; steady-state operation; stellarator
资金
- NINS program of Promoting Research by Networking among Institutions [01411702]
- [NIFS11ULGG801]
- [NIFS10ULPP701]
- [NIFS11ULPP801]
- [NIFS11ULPP802]
- [NIFS10ULRR701]
- [NIFS10ULRR702]
- [NIFS11ULRR801]
- [NIFS11ULRR802]
- [NIFS11ULRR804]
- [NIFS10ULAA003]
- [NIFS10ULAA701]
- [NIFS10ULAA704]
- [NIFS10ULAA705]
- [NIFS15ULAA708]
The deuterium experiment started from March 2017 on the large helical device (LHD) as a part of the LHD high-performance upgrade project. The objectives of the deuterium experiment are: 1) to realize the high-performance operation; 2) to explore the physics of isotope effect; 3) to demonstrate the confinement capability of energetic particles in helical devices; and 4) to explore the research on plasma-material interactions using the benefit of stable steady-state operation ability of LHD. As preparations for deuterium experiment, the positive-ion-based neutral beam injectors (NBIs) are upgraded to increase their injection power in deuterium operation. On the other hand, the injection power of negative-ion-based NBI is deteriorated due to the isotope effect of negative-ion source. The neutron diagnostic and the exhaust detritiation system are newly installed for the deuterium experiment. The commissioning of LHD for the deuterium experiment is quite successful. The high ion temperature operation region is extended by the deuterium experiment. Ion temperature exceeding 9 keV is achieved with the deuterium operation of LHD.
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