@article{oai:jaxa.repo.nii.ac.jp:00036691, author = {Masayuki, HIRABAYASHI and Makoto, KYOYA and Masahide, MURAKAMI and Toshio, MATSUMOTO}, journal = {The Institute of Space and Astronautical Science report. S.P. : Mid- and Far-Infrared Astronomy and Future Space Mission}, month = {Dec}, note = {The HII/L2 mission (SPICA) is a future mission to launch a large infrared observatoryto the L2 orbit by an H-IIA rocket. A unique feature of its cryogenic system is a `warm launch"system using radiative cooling and mechanical cooling in orbit to cool down its detectors andmirrors to 4.5K. By adopting this system, we can remove the heavy vacuum shell and the heliumtank needed for traditional cryostats, and reduce the weight of the spacecraft dramatically., 資料番号: SA4618302000}, pages = {323--330}, title = {HII/L2 Mission Cryogenic System}, volume = {14}, year = {2000} }