A Laser Optically Pumped Polarized He-3 Target For Storage-Rings

K. LEE*, J.O. HANSEN, J.F.J. van den Brand, R.G. MILNER

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review


A polarized He-3 target for use in a storage ring has been constructed and tested. The target employs an infrared laser to polarize He-3 atoms by metastability exchange optical pumping in a Pyrex glass cell which is connected by a glass capillary to a windowless target storage cell. The target polarization direction is determined by a 3 mT magnetic field. With 3 W of incident laser power, equilibrium polarizations of 50% at a flow rate of 1 x 10(17) He-3 atoms/s have been routinely achieved. Two techniques have been investigated to rapidly reverse the He-3 target polarization. Further, a scheme to interface the glass pumping cell with the storage ring vacuum has been developed.
Original languageEnglish
Pages (from-to)294-303
Number of pages10
JournalNuclear Instruments & Methods in Physics Research Section A-Accelerators Spectrometers Detectors and Associated Equipment
Issue number2-3
Publication statusPublished - 1 Sept 1993
Externally publishedYes




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