Method for reducing the ultralow temperature test and Device for reducing the cost of ultralow temperature test

摘要

The cooling cost reduction method of the ultra-low temperature test according to the present invention includes a cooling rate setting step; A first cooling step including a slow cooling process and a fast cooling process; And a second cooling step. In addition, the apparatus for reducing the cooling cost of the ultra-low temperature test according to the present invention includes: a chamber for ultra-low temperature test; A refrigerant supply unit; A liquid nitrogen supply unit; An input unit; And a control unit.