HE-3-TLSXGAS-PT Helium-3 Cryostat

"Dry" System - Top Loading - Sample in Exchange Gas - for High Pressure Diamond Anvil Cell (DAC)

JanisULT is proud to announce the development of a top-loading cryogen-free Helium-3 cryostat with sample in exchange gas for high pressure diamond anvil cell (DAC) having broad operating temperatures between 0.32 K and 300 K. An indium sealed sample chamber made of OFHC copper is locate at the bottom of the sample positioner (“top-loader”) with a sample space of 2.25” diameter and 3.25” height.

The sample chamber makes direct contact to the He-3 pot cold plate, while the sample is cooled through a few-torr He-3 exchange gas introduced into the sample chamber from a mini-exchange gas handling system locate at the top of the cryostat. During testing at JanisULT’s Woburn facility, a calibrated thermometer was installed inside the sample chamber to simulate the user’s experiment, and it reached approximately 320 mK, with holding time longer than 50 hours. A stainless steel capillary starting from the top of the cryostat enters the sample chamber, and is used to fill high pressure gas into the DAC. Helium-4 gas with 100 bar pressure has been applied inside the stainless steel capillary per the user’s request, with which the user will be able to achieve 1.0 million bar pressure on the DAC.

This cryostat can also be used for other experiments that require cooling down samples below 1.0 K in exchange gas. At the same time the sample space can be made slightly larger if necessary.

Performance Specification

Base temperature: 0.32 K
Holding time at base temperature: >50 hours
Operation temperature range: 0.32 K - 300 K
Sample space: 2.25" diameter and 3.25" height (option for slightly larger sample space available)

Helpful Resources

Importance of Ultra Low Temperature Research - an interview with Dr. Zuyu Zhao

Complete our Helium-3 System Inquiry Checklist.

HE-3-TLSXGAS-PT cryogen free helium-3 cryostat, ref. 16610, Janis Research, pulse-tube cooled, ultra low temperature
Model HE-3-TLSXGAS-PT Cryogen Free Helium-3 Cryostat
HE-3-TLSXGAS-PT cryogen free helium-3 cryostat and compressor, ref. 16610, Janis Research, pulse-tube cooled, ultra low temperature
Model HE-3-TLSXGAS-PT Cryogen Free Helium-3 Cryostat with Compressor
indium-sealed sample chamber in model HE-3-TLSXGAS helium-3 cryostat for DAC, diamond anvil cells, ref. 16610, ultra low temperature
Indium Sealed Sample Chamber in Model HE-3-TLSXGAS Helium-3 Cryostat for DAC
Temperature controller reading for Model HE-3-TLSXGAS/DAC cryogen free helium-3 cryostat for diamond anvil cells, ref 16610, Janis Research, ultra low temperature
Performance for Model HE-3-TLSXGAS Helium-3 Cryostat for DAC