Sumitomo's Double-stage Stirling Cooler

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Cryostat

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FS1ST LB2ST 4K-class Cooler

LB2ST: Double-stage Stirling Cooler

The LB2ST is a space qualified double-stage Stirling cooler. This cooler can be used for detector cooling,thermal shield cooling and pre-cooling for JT circuit cooler. Special mechanism(patent) is used to achieve long lifetime. This cooler is adopted to ASTRO-H/SXS to be launcehed in 2014. Single-Stage Stirling Cooler

Specifications(Drive electronics is excluded)
Cooling Power	0.2W at 20K/ 1W at 100K
Life time	>3years
Input Power	<90W
Mass	<9.5kg
Heritage	AKARI(ASTRO-F) 2006/02～ Operating 4.5years in orbit (as of 2010/08)
	ISS/Kibo(JEM)/SMILES(JAXA)2009/09～

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