Janis Research, cryogenics, cryostats

3HELIUM SYSTEMS

Model HE-3-SOSV-S Cryostat
Description:

The model HE-3-SOSV-S is a special optical cryostat.  Optical windows with typical clear view size of 0.5" are installed on the vacuum shroud, as well as both the liquid nitrogen and liquid helium temperature radiation shields.

A special sample positioner with rotary/linear motion manipulator is installed at the top of the sample positioner so that the sample can be moved up and down, as well as rotated.  OFHC copper braids are employed to provide the flexibilities of motion and rotation.  A double optical sample holder is installed at the bottom
of the sample positioner for reference and
sample measurements.

This He-3 cryostat includes the following components:

  • Highly efficient liquid nitrogen shielded helium dewar
  • Liquid nitrogen temperature radiation with optical windows
  • Liquid helium temperature radiation with optical windows
  • 1 K radiation shield
  • Charcoal sorption pumps with heaters and thermometers
  • 1 K pots with thermometers
  • He-3 pots with heaters and thermometers
  • He-3 gas
  • Sample probe with rotary/linear motion manipulator
  • Sample mount with heater and thermometer
  • Operation test

Click on photo for larger image. HE-3-SOSV-S special optical cryostat.

Options:

  • Resistive wires
  • Coaxial cables
  • Automatic temperature controller
  • Helium level sensor and read out
  • Liquid helium transfer line
  • 1 K pot pumping station
  • High vacuum pumping station
Performance Specification with two sets of 0.25" clear view quartz windows installed:
Sample Mount Base Temperature: less than 350 mK
Holding Time at Base Temperature: 24 hours minimum
Operation Temperature Range: 0.35 K - 300 K
Typical Sample Space: 1.5"
Sample Z-motion: +/- 0.5"
Sample Rotation: +/- 90 degree


Typical Performance chart of Model HE-3-SOSV-S special optical sample in vacuum He-3 system; Janis Research, ultra low temperature, cryogenics

Model HE-SOSV-S mechanical drawing. Janis Research, cryogenics

 

Table of Contents

Pages
Introduction 1

Standard He-3 Cryostats
HE-3-SSV Insert, Standard Sample Loading, Sample in Vacuum 2
HE-3-SVSD Insert, Standard Sample Loading, Sample in Vacuum for He-4 Storage Dewar 3
HE-3-SSXGAS Insert, Standard Sample Loading, Sample in Exchange Gas 4
HE-3-XGHS Mini-Exchange-Gas Handling System 5
HE-3-SOSV Cryostat, Standard Sample Loading, Optical, Sample in Vacuum 6
HE-3-SOSV-S Cryostat, Standard Sample Loading, Optical, Sample in Vacuum 7
HE-3-SVC Cryostat, Standard Sample Loading, Sample in Vacuum, Compact for Detector Application 8
HE-3-CCR-SSV Cryostat, Standard Sample Loading, Sample in Vacuum, Cryogen-free 9
HE-3-SSV-CF Cryostat, Standard Sample Loading, Sample in Vacuum, Continuous Flow 10
HE-3-TLSL Cryostat, Top Loading, Sample in He-3 Liquid 11
HE-3-TLOSL Cryostat, Top Loading, Optical, Sample in He-3 Liquid 12
HE-3-TLSV Cryostat, Top Loading, Sample in Vacuum 13
Gas Handling System for Top Loading He-3 Systems 14

Special He-3 Cryostats
HE-3-TLSL-NMR Cryostat, Top Loading, Sample in He-3 Liquid for NMR Experiments 15
HE-3-TLSUHV-SPM Cryostat, Top Loading, Sample in UHV for Scanning Probe Microscope System 16
HE-3-SSUHV-SPM/ESR Cryostat, Standard Sample Loading, Sample in UHV for Scanning Probe Microscope System and Electron Spin Resonance System 17
HE-3-BLSUHV-STM Cryostat, Bottom Loading, Sample in UHV for Scanning Tunneling Microscope System 18
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