CS210-GMX-20B
The CS210-GMX-20B is our ultra low vibration closed cycle cryostat for UHV applications. The ARS manufactured GMX-20B interface, like our "B" series cold heads, is a true UHV system (10-11 Torr) where all of the rubber o-ring seals have been replaced with welded joints and metal seals. A CF flange is directly welded to the interface.
The GMX-20B also has the advantage of being easily bakeable to 200 C because the DE-210 cold head can be quickly removed from the GMX-20B interface without breaking vacuum.
The GMX-20 interface opens up a wide range of capabilities never before possible with a closed cycle cryocooler. The GS204-DMX-20B uses a helium exchange gas to decouple the sample from the cold tip of the DE-210 cryocooler. This prevents almost all vibration from being transmitted to the sample. Scientists have demonstrated vibration levels as low as <10 nm with the GMX-20 Series of interfaces.
Because the exchange gas is inherently less efficient than cooling by conduction, the base temperature of the sample will be ~1 K higher than the cryocooler. Additionally the GMX-20 interface requires a downward orientation of the cold tip to facilitate convective cooling of the exchange gas.
Applications
- Low vibration UHV applications
- Microscopy applications
- Surface science
- Nanomaterials
- Quantum Science
Features
Typical Configuration
Options & Upgrades
- Ultra low vibrations (<10 nm)
- True UHV (10-11 Torr)
- Bakeable to 200 C with cold head removed
- Open sample space
- Cold tip down orientation
- Fully customizable
- Cold head (DE-210SF)
- Compressor (ARS-10HW)
- 2 helium hoses
- GMX-20B ultra low vibration interface
- 8" rotatable CF flange
- Nickel plated OFHC copper radiation shield terminating 0.125" short of the cold tip
- Instrumentation for temperature measurement and control:
- 10 pin UHV feedthrough
- 50 ohm thermofoil heater
- Silicon diode sensor curve matched to (± 0.5 K) for control
- Calibrated silicon diode sensor (±12 mK) with 4 in. free length for accurate sample measurement
- Wiring for electrical experiments:
- 10 pin feedthrough
- 4 copper wires
- Sample holder for optical and electrical experiments
- Temperature controller
- 6-12" CF flange available but uses non standard ID and may not fit existing chambers
- 4 K cold head (1 W @ 4.2 K)
- Turbo upgrade for faster cooldown times
- 450 K high temperature interface (Not required with the DMX-20 interface, but the 450 K interface is helpful for high temperature performance.)
- 800 K high temperature interface
- Custom temperature sensor configuration (please contact our sales staff)
- Custom wiring configurations (please contact our sales staff)
- Sample holder upgrades (custom sample holders available)
- UHV Optical Vacuum Shrouds and Chambers