Lh. Kramer et al., A CRYOGENIC STORAGE CELL FOR POLARIZED INTERNAL GAS TARGETS, Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment, 365(1), 1995, pp. 49-53
A prototype cryogenically-cooled storage cell for the HERMES polarized
He-3 internal target has been designed and constructed. The storage c
ell operates at 15 K with a 10 W applied heat load, while maintaining
less than a 3 K differential over the 40 cm long cell. When operated a
t 15 K, the target thickness in the storage cell is a factor of 4.5 la
rger than for a room temperature cell. The cooling system used a conti
nuous flow cryogenic helium gas loop. Complete details of the system a
re presented.