Janis Research, cryogenics, cryostats

3HELIUM SYSTEMS

Model HE-3-SVC Cryostat
Description:

The model HE-3-SVC cryostat is a compact He-3 unit designed for experiments that cannot accommodate the larger height of the standard units.  It is ideal for installation on an optical table and is typically used for detector cooling to He-3 temperatures.  The sample or detector is attached at the bottom of the He-3 pot inside the vacuum jacket of the cryostat, and the system is often supplied with a window that provides optical access to the He-3 cold finger.  The cryostat includes a superinsulated, liquid nitrogen shielded helium reservoir designed for long hold times, consistent with the size of the unit.  The He-3 gas is permanently contained in a storage volume attached to the outer jacket of the unit.

 This He-3 cryostat includes the following components:
  • Charcoal sorption pump with heater and thermometer
  • 1 K pot with thermometer
  • He-3 pot with heater and thermometer
  • Permanently stored He-3 gas
  • Liquid nitrogen shielded dewar
  • Operation test
Options:
  • Resistive and/or superconducting wires
  • Coaxial cables
  • Clear shots to sample area
  • 1 K cold plate
  • Automatic temperature controller
  • Helium level sensor and read out
  • Nitrogen level sensor and read out
  • Liquid helium transfer line
Performance Specification:
Base Temperature: 270 mK
Holding Time at Base Temperature:
(without pumping the 1 K pot) 		40 hours
Holding Time at Base Temperature:
(pumping the 1 K pot) 		120 hours
Temperature Range: 0.27 K - 80 K (300 K optional)
Sample Space: As required
Port Size: As required
Model HE-3-SVC He-3 cryostat by Janis Research, cryogenics
Mechanical drawing of HE-3-SVC cryostat by 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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