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  4. 3He&4He closed cycle refrigerator (Niki Crafts Co., Ltd.)
3He&4He closed cycle refrigerator-Soapion pump type helium 3 refrigerator system
3He&4He closed cycle refrigerator-Niki Crafts Co., Ltd.

3He&4He closed cycle refrigerator
Niki Crafts Co., Ltd.

About This Product

■Features

・This is a sorption pump type 3He refrigerator system that is based on a pulse tube type 4K refrigerator and can achieve extremely low temperatures below 300mK with low vibration. ・Conventional 3He refrigerators did not take into consideration the removal of the natural vibration of the pulse refrigerator, and vibration noise could interfere with measurements. Therefore, by creating a separate structure for the pulse refrigerator and each cooling stage, we were able to reduce the vibration to 0.1 to 0.2 μm (RMS). - Cooling control is completely automated from room temperature to base temperature using an AC bridge and the included software (including some hardware). - Schedule management using time sequences allows the user to set and manage the cooling retention time (up to 100 hours) and re-cooling timing as desired.

■Basic performance

・Base temperature: ≦300mK ・Refrigerating capacity: 100μW @ 350mK ・Holding time: 100 hours (no load) ・0.1μm/RMS (3He stage)

■System configuration

・Pulse tube type closed circulation refrigerator for preliminary cooling ・ Dedicated compressor unit (standard: water-cooled) ・3He condess head and 3He pot stage ・Dedicated vacuum chamber (can be manufactured to suit experimental purposes) ・AC bridge for temperature control ・Control software (including some hardware)

  • Product

    3He&4He closed cycle refrigerator

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1 Models of 3He&4He closed cycle refrigerator

Image Part Number Price (excluding tax)
3He&4He closed cycle refrigerator-Part Number-Soapion pump type helium 3 refrigerator system

Soapion pump type helium 3 refrigerator system

Available upon quote

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Niki Crafts Co., Ltd.

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