Adapted from our popular LM optical short-solenoids, the LN series brings a low-cost alternative to the researcher where a local liquid nitrogen (“LN2”) supply is available.
Two models feature HTS coil systems providing 1 T field strengths in 38 and 80 mm bores, with coil cryogenic operating temperatures achieved with an LN2 flow drawn from a standard unpressurised liquid nitrogen dewar. The flow circuit connects to the magnet body via flexible bellows, offering ease of magnet siting and very low vibration levels in operation. The LN2 flow is maintained by a small rotary pump, which also provides an initial system vacuum so no other vacuum pumping station is required. Cool-down is fast (under 5 h for the LN40) and theLN2 consumption is low (<0.5 lph). Features shared with the LM short solenoids include the very low profile and excellent optical access angles, low fringe field through the use of a partial iron circuit for the cryostat, ability to operate at any angle, and active magnet protection electronics.
Bore size (mm)
Peak field (T)
Max. operating current