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HE-3-SSV-CF Continuous Flow Cryostat - Standard Sample Loading, Sample in Vacuum

Overview

Click on button below to enlarge view of HE-3-SSV-CF continuous flow helium-3 cryostat from Janis Research, cryogenic equipment, ultra low temperature

The model HE-3-SSV-CF is a continuous flow He-3 cryostat.

 

 

 

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Standard Configuration

The model HE-3-SSV-CF is a continuous flow He-3 cryostat. A hermetically sealed mechanical pump is employed to circulate the He-3 and cool down the system to the base temperature. He-3 condenses inside the 1 K pot before it enters the He-3 pot through a condensing impedance. An external gas handling system with a special liquid nitrogen cold trap is equipped to operate the cryostat. Turbo or Roots pumps can be added to the pumping station for lower base temperatures and higher cooling power. The sample is typically attached at the bottom of the He-3 pot inside the inner vacuum chamber (IVC) can for cooling.

Click button below to enlarge view of mechanical drawing of HE-3-SSV-CF continuous flow helium-3 cryostat from Janis Research, sample in vacuum, standard sample loading, ultra low temperatureEnlarge

HE-3-SSV-CF Continuous Flow Cryostat Mechanical Drawing

This system can also be operated in the single shot mode for even lower base temperature, in which case the holding time will be approximately a few days.

As an option, the He-3 pot is installed on the system with an indium seal. It can be replaced with the Janis model JDR-100 dilution stage, which will allow the system to reach a base temperature near 10 mK.

This He-3 cryostat includes the following components:

  • High efficiency liquid helium cryostat
  • 1 K pot with thermometer
  • He-3 condensing impedance
  • He-3 pot
  • He-3 return line
  • Gas handling system
  • Hermetically sealed pump(s)
  • Electrical controlling circuit with over pressure safety protection
  • Operation test

Options:

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Specifications

Performance Specification:

Continuous flow mode
Base temperature: 420 mK
Holding time at base temperature: Continuous flow

Single shot mode
Base temperature: 320 mK
Holding time at base temperature: 3-4 days

Operation temperature range: 0.3 K - 80 K (300 K optional)
Sample space: As required

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