Tokoku, C. et al., Cryogenics System for the Interferometric Cryogenics Gravitational Wave Telescope, KAGRA Design, Fabrication, and Performance Test-, Adv. Cryog. Eng., Vol.59 (2014), pp.1254-1261.
Sakaibara, Y. et al., A Study of Cooling Time Reduction of Interferometric Cryogenic Gravitational Wave Detectors Using a High-Emissivity Coating, Adv. Cryog. Eng., Vol.59 (2014), pp.1176-1183.