Cryogen Free Superconducting Magnet Systems
Hall Scientific Ltd (HSL) now supply Cryogen Free Superconducting Magnet Systems in cooperation with Cryomagnetics Inc.
A full range of high quality cryogen free superconducting magnet systems that are cooled to 4.2K using Pulse tube or Gifford McMahon cryocoolers are now available.
The elimination of liquid cryogen’s and thus the reservoirs to contain them has meant that the cryogen free alternative is a fraction of the size and weight of the conventional systems. The development of these systems has opened up new markets in places where liquid helium is difficult or impossible to obtain.
The Cryogen free superconducting magnet systems offered are based on two different cryocoolers, the 4.2K pulse tube (PT) and the 4.2K Gifford McMahon (GM).
4.2K Pulse Tube
Pulse tube refrigerators are thermodynamically less efficient than the GM refrigerators but since they have no moving cold parts the vibration due to the cold-head is minimised. Elimination of a displacer in the cold head simplifies the construction and increases the reliability. The only maintenance required on these systems is replacement of the absorber in the compressor every 30,000 hours of continuous operation.
The 4.2K GM based Cryogen Free Superconducting Magnet Systems are thermodynamically more efficient and have the added flexibility of being able to operate in any orientation. A popular configuration involves the mounting of a magnet on a stand and rotating the room temperature bore, allowing access in either horizontal or vertical positions. The disadvantage of these coolers is the added vibration due to the moving displacer within the cold-head. This leads to a maintenance requirement of seal replacement every 10,000 to 15,000 hours and an absorber change every 20,000 to 30,000 hours of continuous operation.
Cryogen Free Superconducting Magnet Systems datasheet download – Click below;
Contact us today to configure your “C-Mag” Cryogen Free Superconducting Magnet Systems from Cryomagnetics Inc.