PRODUCTS & SERVICES
4K/1K Cryocoolers
The 4K cryocooler and the 1K cryocooler are the result of the technological union of the Joule Thomson (JT) cryocooler and the 20K Stirling cryocooler. The JT cryocooler comprises JT compressor, heat exchanger and JT orifice. This 4K cryocooler was adopted for the X-ray astronomical satellite Hitomi (ASTRO-H) launched in 2016.
| Items | 4K cryocooler (4He) | 1K cryocooler (3He) |
|---|---|---|
| Cooling capacity | 40mW at 4.5K | 10mW at 1.7K |
| JT cryocooler | ||
| Power consumption | ≤ 50W | ≤ 80W |
| Two-stage Stirling cycle cryocooler | ||
| Cooling capacity | 200mW at 20K, 1W at 100K | 80mW at 15K, 1W at 100K |
| Power consumption | ≤ 90W | ≤ 90W |
SMILES (equipped on the International Space Station) |
X-ray astronomy satellite Hitomi (ASTRO-H) |
X-Ray Imaging and Spectroscopy Mission (XRISM) |
Cosmic background radiation observation satellite LiteBIRD |
4K cryocooler and 1K cryocooler for X-ray astronomy satellite Athena |
4K cryocooler and 1K cryocooler for infrared astronomy satellite SPICA |
