Remote
cooling loops

Absolut System is developing cryogenic cooling configurations using closed-loop Helium in the 2 K to 300 K range. One application is the cooling of superconducting magnets.

Remote cooling
loops

Absolut System is developing cryogenic cooling configurations using closed-loop Helium in the 2K to 300K range. One application is the cooling of superconducting magnets.

Cooling superconducting coils

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Cooling superconducting coils

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The superconducting magnets currently in use operate at low temperatures
and need to be cooled with Helium (He).

The superconducting state of these magnets requires cooling from ambient to cryogenic temperatures ranging from 30K to 4K. Due to the large mass of the magnets generally used, the amount of energy to be extracted is considerable.

Pre-cooling of the superconducting magnet must be slow enough to avoid mechanical stress that could damage the magnet structure.

Absolut System designs complete systems based on closed-circuit cryogenic helium circulation loops, to cool your superconducting magnet at a controlled rate.

Our expertise

Our teams provide all the engineering services (pre-study, sizing, advanced cooling modeling) needed to cool superconducting coils weighing several tonnes to cryogenic temperatures.

Thanks to our expertise, we develop custom-designed cryogenic systems offering simultaneous open-loop liquid nitrogen (LN2) circulation for system screening and closed-loop helium circulation for controlled cooling of superconducting coils from 300K to 4K.

Absolut System takes care of your cryogenic installation for the operation of superconducting coils:

  • Advanced preliminary studies
  • External pre-cooling
  • Helium liquefaction
  • Helium recovery and liquefaction
cryostats_baie

Cooling superconducting coils

Cooling superconducting coils

Cooling superconducting coils

produits_ligne_20
produits_ligne_30

The superconducting magnets currently in use operate at low temperatures and need to be cooled with Helium (He).

The superconducting state of these magnets requires cooling from ambient to cryogenic temperatures ranging from 30K to 4K. Due to the large mass of the magnets generally used, the amount of energy to be extracted is considerable.

Pre-cooling of the superconducting magnet must be slow enough to avoid mechanical stress that could damage the magnet structure.

Absolut System designs complete systems based on closed-circuit cryogenic helium circulation loops, to cool your superconducting magnet at a controlled rate.

Our expertise

Our teams provide all the engineering services (pre-study, sizing, advanced cooling modeling) needed to cool superconducting coils weighing several tonnes to cryogenic temperatures.

Thanks to our expertise, we develop custom-designed cryogenic systems offering simultaneous open-loop liquid nitrogen (LN2) circulation for system screening and closed-loop helium circulation for controlled cooling of superconducting coils from 300K to 4K.

Absolut System takes care of your cryogenic installation for the operation of superconducting coils:

  • Advanced preliminary studies
  • External pre-cooling
  • Helium liquefaction
  • Helium recovery and liquefaction
cryostats_baie

Remote cooling loops

Remote cooling loops

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Remote cooling capacity over a wide temperature range.

Remote helium circulation loops provide remote cooling capability using a flexible line between a cold box (cryostat) containing the cryogenic gas and the application. They are the ideal solution for versatile, low-vibration remote cooling.

Test benches for industrial, space and scientific research:

Key Points

Test benches for industrial, space and scientific research:

Key Points

Suitable temperature ranges

These remote cooling loops meet the needs of electro-optical characterization test benches for very long wavelength infrared (VLWIR) detectors on :

  • Mercury-Cadmium-Telluride (MCT) technology in the 50-60K temperature range

  • MgB2-based superconducting electrotechnical equipment in the 20-30K temperature range (motors, power cables or high-field magnets).

 

Remote helium cooling loop systems have also been adapted to closed-cycle cryostats with optical access. These are particularly well suited to studying the magneto-optical properties of semiconductors in the 10K region, where extremely low vibration is a key requirement for the interface with the optical table.

Characterizing the spatial noise of IR detectors requires systematic, repetitive measurements at varying temperatures over long periods of time. In this context, Absolut System extends the temperature range of remote helium cooling loops to meet 30-200K characterization with extremely low vibration and user-friendly push-button operation.

These remote cooling loops meet the needs of electro-optical characterization test benches for very long wavelength infrared (VLWIR) detectors on :

  • Mercury-Cadmium-Telluride (MCT) technology in the 50-60K temperature range

  • MgB2-based superconducting electrotechnical equipment in the 20-30K temperature range (motors, power cables or high-field magnets).

Remote helium cooling loop systems have also been adapted to closed-cycle cryostats with optical access. These are particularly well suited to studying the magneto-optical properties of semiconductors in the 10K region, where extremely low vibration is a key requirement for the interface with the optical table.

Characterizing the spatial noise of IR detectors requires systematic, repetitive measurements at varying temperatures over long periods of time. In this context, Absolut System extends the temperature range of remote helium cooling loops to meet 30-200K characterization with extremely low vibration and user-friendly push-button operation.

New 2K – 4K range

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To reach temperatures below 4K and retain the advantages of the flexible loop design, Absolut System offers a coupling of the two-stage Pulse-Tube cryocooler with a Joule-Thomson cryocooler.

Solutions are offered based on the flexible helium loop design for the application range between 30K and 2K (depending on the Joule-Thomson pressure ratio). Additional coupling with the cADR stage can enable cooling at even lower temperatures.

The vibration-free remote cryogenic circulation loop can be fully customized to suit length, power and cold temperature requirements.

Suitable temperature ranges

These remote cooling loops meet the needs of electro-optical characterization test benches for very long wavelength infrared (VLWIR) detectors on :

Mercury-Cadmium-Telluride (MCT) technology in the 50-60K temperature range
MgB2-based superconducting electrotechnical equipment in the 20-30K temperature range (motors, power cables or high-field magnets).

Remote helium cooling loop systems have also been adapted to closed-cycle cryostats with optical access. These are particularly well suited to studying the magneto-optical properties of semiconductors in the 10K region, where extremely low vibration is a key requirement for the interface with the optical table.

Characterizing the spatial noise of IR detectors requires systematic, repetitive measurements at varying temperatures over long periods of time. In this context, Absolut System extends the temperature range of remote helium cooling loops to meet 30-200K characterization with extremely low vibration and user-friendly push-button operation.

New 2K – 4K range

To reach temperatures below 4K and retain the advantages of the flexible loop design, Absolut System offers a coupling of the two-stage Pulse-Tube cryocooler with a Joule-Thomson cryocooler.

Solutions are offered based on the flexible helium loop design for the application range between 30K and 2K (depending on the Joule-Thomson pressure ratio). Additional coupling with the cADR stage can enable cooling at even lower temperatures.

The vibration-free remote cryogenic circulation loop can be fully customized to suit length, power and cold temperature requirements.

Related product: ACE-CUBE

ACE-CUBE is a cryogenic platform operating in a closed cycle. Versatile, it is designed for low-temperature scientific instrumentation.

Related product: Ace-CUBE

ACE-CUBE is a cryogenic platform operating in a closed cycle. Versatile, it is designed for low-temperature scientific instrumentation.