Due to ongoing shortages and rising helium prices, we purchased and began renovations for a helium recovery system in late 2019. The system began operation in early 2021 and is currently recycling the helium boil-off from five superconducting magnets in the department. The current setup delivers roughly 900 L of liquid He per year with a recovery rate of 97%.
Our helium recovery system uses a CryoMech liquid helium plant. This includes
- an atmospheric pressure recovery bag,
- a recovery compressor,
- medium pressure storage tanks,
- an automatic helium purifier,
- a LHeP22 helium liquefaction plant with a 150 L collection dewar.
The manifolds that connect the magnets to the He collection circuit are based on the setup at Yale’s NMR facility.
More details below.