Thermal design and its on-orbit performance of the AKARI cryostat

详细信息    查看全文

• 作者：Masayuki Hirabayashi ; Katsuhiro Narasaki ; Shoji Tsunematsu ; Yoshiyuki Kimura ; Seiji Yoshida ; Hiroshi Murakami ; Takao Nakagawa ; Akira Ohnishi ; Toshio Matsumoto ; Hidehiro Kaneda ; Keigo Enya ; Masahide Mu
• 关键词：F. Space cryogenics ; F. Cryostat ; B. Superfluid helium ; E. Stirling
• 刊名：Cryogenics
• 出版年：2008
• 出版时间：May-June 2008
• 年：2008
• 卷：48
• 期：5-6
• 页码：189-197
• 全文大小：999 K

文摘

The AKARI satellite (formerly known as ASTRO-F) is Japan’s first infrared astronomical satellite. AKARI is equipped with the infrared camera (IRC) and the far-infrared surveyor (FIS), which are cooled below 7 K. The AKARI’s 68.5 cm telescope, which is made of SiC, is also cooled below 7 K. A unique feature of the AKARI cryostat is that it uses both cryogen and mechanical coolers. Using mechanical coolers, the helium lifetime can be greater than one year with 170 L of liquid helium. AKARI was launched on February 21, 2006 (UT), from the Uchinoura Space Center (USC). It has been performing successfully in orbit.