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Updated: Apr 11, 2026

Cryogenic Liquid Jets for High Repetition Rate Discovery Science
Published on: May 9, 2020
Note: Simple leak sealing technique for ultra-high vacuum cryostat by using freezable liquid
Min-Seong Kim1, Ji-Ho Kim1, In-Whan Lyo1
1Department of Physics, Yonsei University, Seoul 120-749, South Korea.
Abstract:
Here we introduce a simple, low-cost, contamination-free, and highly reliable technique for sealing an ultra-high vacuum (UHV) cryostat by using cryogenically freezable liquid. We demonstrate it by sealing an UHV cryostat with dry leaks in the high vacuum range; ethanol was utilized to fill and block the leakage pathways through the subsequent in situ solidification by LN2. The seal is reversible and can be maintained as long as the cryostat is kept at cryogenic temperature.
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