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This paper reports the performances, construction of the cryopump work -ing on Solvay-circle refrigerator. The cryopump consists of compressor, expander and pump. All parts of cryopump are made by ourselves. Its ultimate pressure: 8.4×10~-8Pa. Effective pumping speed: 2000L/s for Nitrogen, 3000L/s for hydrogen. Cool-down time: 1 hour.
This paper reports the performances, construction of the cryopump work -ing on Solvay-circle refrigerator. The cryopump consists of compressor, expander and pump. All parts of cryopump are made by ourselves. Its ultimate pressure: 8.4 × 10 ~ -8Pa. Effective pumping speed: 2000 L / s for Nitrogen, 3000 L / s for hydrogen. Cool-down time: 1 hour.