Janis Research, cryogenics, cryostats

3HELIUM SYSTEMS

Model HE-3-TLSUHV-SPM Cryostat
Description:

The model HE-3-TLSUHV-SPM cryostat is a top loading, vibration isolated He-3 cryostat designed for Scanning Probe Microscopy (SPM) applications with sample in a UHV environment.  The sample is installed on the SPM and the combination is then top loaded into a UHV sample chamber, which is vibration isolated from the rest of the cryostat.  Thermal contacts are achieved by customized gold-plated flexible OFHC copper braids.  Twin He-3 inserts provide enough cooling power to reach the base temperature, while a superinsulated liquid helium dewar is used to further reduce the transmission of vibrations to the microscope.  The system can be supplied with or without a high field superconducting magnet and optional Lambda point refrigerator.

This He-3 cryostat includes the following components:

  • Thermometer and heater on the sample probe
  • Top loading SPM and sample probe with heater and thermometer
  • Charcoal sorption pumps with heaters and thermometers
  • 1 K pot with thermometers
  • He-3 pot with heaters and thermometers
  • IVC can
  • Operation test

Options:

  • Resistive and/or superconducting wires
  • Coaxial cables
  • IVC tail for superconducting magnet
  • Low eddy current cold finger
  • Automatic temperature controller
  • Superconducting magnet
  • Magnet support with high current leads
  • Magnet power supply
  • Helium level sensor and read out
  • Vapor cooled helium dewar
  • Liquid helium transfer line
  • Twin He-3 insert assemblies
  • Vibration isolated UHV sample chamber
Performance Specification:
Base Temperature: 320 mK
Holding Time at Base Temperature: 24 hours
Sample Space: 2.0"
Temperature Range: 0.30 K - 80 K
Model HE-3-TLSUHV-SPM He-3 cryostat for scanning probe microscope, Janis Research, cryogenics
Mechanical drawing of HE-3-TLSUHV-SPM He-3 cryostat for scanning probe microscope, 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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