CS210-GMX-20
The CS210F-GMX-20 pairs our largest cryocooler, the DE-210, with our X-20 ultra low vibration interface to offer unprecedented cooling power at nanometer vibration levels.
The CS210F-GMX-20 uses a helium exchange gas to decouple the sample space from the cold tip of the DE-210 cryocooler. This prevents almost all vibration from being transferred to the sample space. Scientists have demonstrated vibration levels as low as 3-5 nm with the CS210F-GMX-20.
Because the exchange gas is inherently less efficient than cooling by conduction, the base temperature of the sample will be 1-2 K higher than the cryocooler. Additionally the DMX-20 interface requires the cold tip oriented downward to facilitate convective cooling of the exchange gas.
The CS210F-GMX-20 is ideally suited for Mössbauer experiments and vibrationally sensitive transport measurements. For optical microscopy applications such as Micro Raman, Micro PL, and quantum dots, the CS204-DMX-20-OM is preferred. The -OM modification is also available for the GMX-20.
Applications
- Mössbauer 
- Low vibration optical experiments 
- Quantum dot 
- Photoluminescence 
- Micro-Raman 
- Micro-photoluminescence (Mirco-PL) 
- Micro-spectroscopy 
- Magneto-optical Kerr effect (MOKE) 
- Nanoscience 
- Ellipsometry 
Typical Configuration
- 2 helium hoses 
- GMX-20 ultra low vibration interface 
- Stainless steel vacuum shroud for optical and electrical experiments with pop-off optical block 
- Nickel plated OFHC copper radiation shield 
- 2 high purity quartz windows 
- Instrumentation for temperature measurement and control: - 10 pin hermetic 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 hermetic feedthrough 
- 4 copper wires 
 
- Sample holder for optical and electrical experiments 
- Temperature controller 
Features
- Ultra low vibrations (3-5 nm) 
- Pop-off optical block for easy in-situ sample change 
- Beryllium and Kapton windows available for Mössbauer experiments 
- Large, clear view optical windows (1.25 in.) 
- Large sample viewing angle for optical collection (F/1.8) 
- Fully customizable 
Options & Upgrades
- 4 K cold head (0.8 W @ 4.2 K) 
- 450 K high temperature interface (Not required with the DMX-20 interface, but the 450 K interface is helpful for high temperature performance) 
- Custom temperature sensor configuration (please contact our sales staff) 
- Custom wiring configurations (please contact our sales staff) 
- Beryllium windows for Mössbauer experiments 
- Kapton windows for Mössbauer experiments 
- Window material upgrades (custom materials available) 
- Sample holder upgrades (custom sample holders available) 

