Abstract
We constructed a compact in situ polarized 3He neutron spin filter based on spin-exchange optical pumping which is capable of continuous pumping of the 3He gas while the system is in place in the neutron beam on an instrument. The compact size and light weight of the system simplifies its utilization on various neutron instruments. The system has been successfully tested as a neutron polarizer on the triple-axis spectrometer (HB3) and the hybrid spectrometer (HYSPEC) at Oak Ridge National Laboratory. Over 70% 3He polarization was achieved and maintained during the test experiments. Over 90% neutron polarization and an average of 25% transmission for neutrons of 14.7 meV and 15 meV was also obtained.
Original language | English |
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Article number | 075112 |
Journal | Review of Scientific Instruments |
Volume | 85 |
Issue number | 7 |
DOIs | |
State | Published - Jul 2014 |