Janis Research, cryogenics, cryostats

3HELIUM SYSTEMS

Model HE-3-TLSV Cryostat
Description:

The model HE-3-TLSV is a top-loading cryostat that allows the sample to be removed and introduced in the vacuum sample space when the cryostat is cold.

A special sample probe and a vac-lock with gate valve is supplied with the system.  A linear manipulator can be installed at the top of the sample probe so that the sample can be moved up and down at its base temperature.  Flexible OFHC copper braids are employed to provide the flexibility of movements.

The system contains two identical He-3 inserts, which provides very large cooling power for various types of experiments.  An indium sealed
4 K radiation shield separates the sample space from the dewar vacuum space.  This allows for the introduction of exchange gas into the sample space, making the pre-cooling more efficient.  This design can be used for neutron diffraction experiments through the addition of thin walled aluminum tails.

This He-3 cryostat includes the following components:

  • Highly efficient liquid nitrogen shielded helium dewar
  • Indium sealed 4 K radiation shield functioning as IVC
  • Charcoal sorption pumps with heaters and thermometers
  • 1 K pots with thermometers
  • He-3 pots with heaters and thermometers
  • He-3 gas
  • Vac-lock with gate valve
  • Sample probe with linear motion manipulator
  • Sample mount with heater and thermometer
  • Operation test

CLICK HERE TO VIEW LARGER IMAGE OF Model HE-3-TLSV-NEUTRON cryostat, Janis Research, cryogenics

HE-3-TLSV-NEUTRON sample mount chart. CLICK HERE FOR LARGER IMAGE

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:
Sample Mount Base Temperature: ~ 380 mK
Holding Time at Base Temperature: 24 hours minimum
Operation Temperature Range: 0.4 K - 300 K
Typical Sample Space: 1.0"
 
Mechanical Drawing of Model HE-3-TLSV cryostat, Janis Research, cryogenics, neutron diffraction

 

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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