| Title |
Thermal Analysis of a Cryochamber foran Infrared Detector Considering a Radiation Shield |
| Keywords |
Cryochamber ; 극저온용기 ; IR detector ; 적외선 검출기 ; Radiation shield ; 복사 차폐막 |
| Abstract |
The steady cooling characteristics of a cryochamber for infrared(IR) detector have been investigated analytically, considering radiation shields. The thermal modeling considers the conduction heat transfer through cold finger, the gaseous conduction due to outgassing, and the radiation heat transfer. The cooling load of the cryochamber is obtained by using a fin equation. The results obtained indicate that the gaseous conduction plays an important role in determining the steady cooling load. The steady cooling load is increased as the gas pressure is increased. It is also found that the cooling load is substantially decreased with a radiation shield. The most thermal load of a cryochamber occurs through the cold finger. |