ICEC29/ICMC2024

Design, installation and commissioning of the cryogenic system for NNBI test facility

24 Jul 2024, 14:00

2h

Poster area

Poster Presentation (120m) ICEC 01: Large scale refrigeration and liquefaction Wed-Po-2.5

Speaker

Zhigang Zhu (Institute of Plasma Physics, Hefei Institutes of Physical Science, Chinese Academy of Sciences)

Description

Cryopumps are used as the main pumps of cryo-vacuum systems in the Negative Neutral Beam Injectors (NNBI) test facility to pump gas to generate and maintain the vacuum gradient environment. To cool the cryopumps, a 1000 W@4.5K cryogenic system was built, which provides 4.5 K supercritical helium for cryopanels and 77 K liquid nitrogen for radiation baffles. The major cryogenic system components include helium recycle compressor, oil removal system (ORS), cold box, LHe Dewar, cryogenic distribution box, recovery compressor, helium purifier, gas bag, helium tanks, and LN2 tanks. Design, fabrication, and installation of most of the 1000W@4.5K helium refrigerator was carried out at ASIPP. This paper presents an overview of the design, installation and commissioning of the cryogenic system for NNBI test facility.

Presentation materials

Design, installation and commissioning of the cryogenic system for NNBI test facility.pdf