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First results of negative-ion-based NBI test-stand for Large Helical Device

Conference · · AIP Conference Proceedings (American Institute of Physics); (United States)
OSTI ID:6683329
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  1. National Institute for Fusion Science, Nagoya 464-01 (Japan)
A negative-ion-based NBI test-stand has been constructed in Toki site of National Institute for Fusion Science (NIFS). This Toki test-stand has facilities to produce 2.5 MW neutral beam power with the energy of 125 keV for hydrogen and 250 keV for deuterium, which is utilized for developing a unit of neutral beam injection (NBI) system for Large Helical Device (LHD). All components of the Toki test-stand are installed on the basis of conceptual design of the LHD-NBI system. Development of a high-current negative ion source with vacuum-immersed structure is one of the main objectives of the test-stand, as well as transport of a high-energy beam with a small divergence angle. It is also an important subject to test all of hardware components such as beam dumps and cryo-pumps. Experiments started in July.
OSTI ID:
6683329
Report Number(s):
CONF-921145--
Conference Information:
Journal Name: AIP Conference Proceedings (American Institute of Physics); (United States) Journal Volume: 287:1
Country of Publication:
United States
Language:
English