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Cryogenic Positioners

High Precision Positioners for Cryogenic Temperatures

Cryo Positioner by SmarActSmarAct positioners are designed for different, sometimes extreme, conditions – from atmospheric to ultra-high vacuum or non-magnetic conditions. Our latest development are cryogenic positioners. They are based on our piezo driving technology and optimized for cryogenic temperatures down to the mK range. Additionally, they can be used at temperatures of up to 330 K like our standard UHV positioners. Likewise they are bakeable at high temperatures of up to +160 °C.

We are offering the cryogenic option for the different types of linear positioners as shown in the table below. Positioners from the SLC-series are based on linear slides with crossed-roller bearings and are characterized by their high rigidity and straightness.
The dimensions of the cryogenic positioners remain unchanged compared to the non-cryogenic positioners.

The positioners are available in lengths between 30 and 60 mm. The standard travel ranges vary from 16 mm to 41 mm. The step width of our cryogenic positioners can be set to about 100 – 1000 nm at 14 K and 50 – 1500 nm at 300 K.

Our cryogenic positioners are either open-loop systems without sensor feedback or can optionally work in combination with our PicoScale interferometer for high resolution sensor feedback down to the single digit pm-range. The sensor head of the PicoScale can optionally be integrated into the base plate without changing the dimensions of the positioner.

The cryogenic positioners are compatible with our new MCS2 and our MCS controllers. Both controllers are available in different housing options like tabletop, single control board or 19” rack mount module and in different PC interface options like USB, RS232 or Ethernet. They are bundled with software tools, such as the Precision Tool Commander and other powerful programming interfaces.

SmarAct’s cryogenic positioners can easily be assembled into a complete positioning system, which perfectly fits your application. Whether you need just positioners or a complete system, please contact us.

Key Features

  • For cryogenic environments
  • Large working temperature range from
    mK to 330 K
  • Bakeable at temperatures of up to +160 °C
  • High resolution piezo Stick-Slip drive
  • Guided movement
  • Miniaturization: compact cryogenic positioner down to 20 x 17 x 8.5 mm
  • Interferometric position sensor within same dimensions
  • Vacuum compatibility from ambient pressure to ultra-high vacuum (UHV) applications (10-11 mbar)
  • Customized assemblies

Specs at a Glance

  • Scan range:
    > 1 µm @ 14 K
    > 5 µm @ 300 K
  • Scan resolution: < 1 nm for all temperatures
    > 1 mm/s @ 14 K
    > 20 mm/s @ 300 K
  • Blocking force: > 2 N for all temperatures
  • Open loop
Available Cryogenic Positioners:
Series Type Travel in mm Length x Width x Height in mm³
SLC-17 20 6 21x 17 x 8.5
SLC-17 30 21 30 x 17 x 8.5
SLC-17 40 26 40 x 17 x 8.5
SLC-17 50 31 50 x 17 x 8.5
SLC-17 60 41 60 x 17 x 8.5
SLC-24 30 16 30 x 24 x 10.5
SLC-24 45 29 45 x 24 x 10.5
SLC-24 60 35 60 x 24 x 10.5