Cryogen Free Superconducting Magnet Systems are now available from Hall Scientific Ltd in the UK and Europe in cooperation with Cryomagnetics Inc in the United States. Cryomagnetics Inc is now offering a whole range of measurement options to go with the C-Mag system including;
- Resistivity and Hall Effect
- Specific Heat
- Thermal Transport
- Vibrating Sample Magnetometer
- Helium-3 Insert
- Dilution Refrigerator
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 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). 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.
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
Contact us today on +44 203 004 9895 to configure your “C-Mag” Cryogen Free Superconducting Magnet Systems from Cryomagnetics Inc with measurement options.