9 May 2018 A 50W@170K pulse tube cryocooler used in wide-field survey telescope
Author Affiliations +
Abstract
In this paper, a pulse tube cryocooler used in a wide-field survey telescope is described, this telescope is going to be launched in 2020 in China. And in the telescope, large focal plane array (FPA) detectors working at 188K generate 100W heat which need to be cooled. In order to cool the detectors, three 50W@170K pulse tube cryocoolers are used, with designed life-time of l0 years. To decrease the vibration and electromagnetic interference to the detectors to the minimal limit, two cryogenic loop heat pipes (LHPs) are used to transfer heat from the detectors to the cold tips of the pulse tube cryocoolers. And each cold tip is specified to match the condensers of the LHPs. The cryolooer is driven by a dual-opposed piston compressor with a pair of moving magnet linear motors, one of the motors is also used as the adaptive active vibration suppressor. The cryocooler reaches 16.6% Carnot efficiency at cooling power of 50W@170K with 230Wac input power.
Conference Presentation
© (2018) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Zhenhua Jiang, Zhenhua Jiang, Yinong Wu, Yinong Wu, } "A 50W@170K pulse tube cryocooler used in wide-field survey telescope", Proc. SPIE 10626, Tri-Technology Device Refrigeration (TTDR) III, 1062609 (9 May 2018); doi: 10.1117/12.2304713; https://doi.org/10.1117/12.2304713
PROCEEDINGS
6 PAGES + PRESENTATION

SHARE
RELATED CONTENT

The SPIRIT thermal system
Proceedings of SPIE (September 19 2007)
Gemini helium closed cycle cooling system
Proceedings of SPIE (July 08 2008)
Current status of the Herschel/Planck programme
Proceedings of SPIE (March 04 2003)
Overview Of The Far Infrared Sky Survey Experiment
Proceedings of SPIE (September 26 1979)

Back to Top