HE-3-SVC Compact Cryostat - Standard Sample Loading, Sample in Vacuum
The model HE-3-SVC cryostat is a compact He-3 unit designed for experiments that cannot accomodate 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 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.
HE-3-SVC Compact Cryostat Mechanical Drawing
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
- Janis special CNDT liquid nitrogen shielded helium dewar
- Liquid nitrogen level probe
- Liquid helium level probe
- Digital cryogen level monitor
- Operation test
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Base temperature: 300 mK
Hold time at base temperature: 72 hours
Stop pumping the 1 K pot after the base temperature is reached
Base temperature: 340 mK
Hold time at base temperature: 40 hours
Operation temperature range: 0.3 K - 300 K
Sample space: As required
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