Center for Relativistic Laser Science

1. Equipment name

- Low vibration Pulse tube base 4 K refrigerator (맥동관 냉동기 기반의 저진동 4 K 냉동기)

2. Manufacture and Model

- Seongwoo instrument (2014)

- Customized model

3. Purpose

The 4 K refrigerator is used to measure the basic parameters of individual devices at 4 K, such as the sensitivity, the noise level, and the operation characteristics, as well as to measure the performance of the photon sensor consist of the MMC and SQUID.

4. Specification and performance :

- Cryogen free cooler

  . Pulse tube refrigerator (Sumitomo )

  . 25 W @ 55 K, 0.9 W @ 4.2 K

- Top loading probe

- Base temperature : 2.5 K

- Cool-down time of overall refrigerator from 300 to 4 K : 5 hour

- Cool-down time with top loading probe from 300 to 4 K : 1.5 hour

- Top loading probe : space

5. Location and Picture :

- IBS head quarter : ADR lab