The Model HE-3-TLSLUHV-STM is a top-loading Helium-3 cryostat with sample in ultra-high vacuum (UHV) space for scanning tunneling microscopy (STM) with atomic resolutions. The sample can be loaded through the 1.0” diameter central access when the cryostat is cold. With its standardized unique design, this He-3 cryostat generates next to zero acoustic noise and mechanical vibration. The Model HE-3-TLSUHV-STM He-3 insert is designed to be compatible with all kinds of superconducting magnets, such as solenoid, vector magnets, and more.
This He-3 insert includes the following components:
Central access with gate valve on top
Charcoal sorption pump with heater and thermometer
1 K pot with heater and thermometer
He-3 pot with heater and thermometer
Permanently stored He-3 gas
UHV compatible IVC can
Mechanical heat switches
Operation test
Long holding time: 80 hours with 10 STP liter He-3 gas
Stable He-3 pot temperature: Separate sippers for 1K pot and the charcoal sorb cooling line
Sample can be loaded or removed when the cryostat is cold
Low noise, low vibration
Multiple operation modes: He-3 cryostat can be operated without pumping the 1K pot (referred to as 4K operation mode)
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