SNSPD
Cryostat

Through the 1-2 intermediate stage auxiliary cooling of the ultra-low temperature cold head, the ultra-low temperature level cold head is reduced to reduce its working temperature and extend its working time.
There is no helium loss during operation.
| Model | GL-7 | CC-7 |
| Cooling temperature | 300mK | 300mK |
| Low temperature retention time | More than 24 h | Long-term |
| Cold position | 2-3 set | 2-3 set |
| Working medium | 4He3He | 4He3He |