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TY - CONF AU - Raparia, D. AU - Atoian, G. AU - Ikeda, S. AU - Lambiase, R.F. AU - Milner, R. AU - Musgrave, M.M. AU - Okamura, M. AU - Poblaguev, A. AU - Ritter, J. AU - Trabocchi, S. AU - Zelenski, A. ED - Boland, Mark ED - Tanaka, Hitoshi ED - Button, David ED - Dowd, Rohan ED - Schaa, Volker RW ED - Tan, Eugene TI - Development of Spin Rotator and an Absolute Polarimeter for Polarized He-3 at BNL J2 - Proc. of IPAC2019, Melbourne, Australia, 19-24 May 2019 CY - Melbourne, Australia T2 - International Particle Accelerator Conference T3 - 10 LA - english AB - EBIS Preinjector will provide longitudinally polarized 3He++ ions with about 80% polarization and 5.10¹¹ particles per bunch at 6 MeV, which must be rotated to vertical direction before it ions are injected into the Booster. The 3He++ longitudinal polarization is first rotated to the transverse direction by the 21.5° bending magnet. Then the solenoid spin-rotator rotates the spin to the vertical direction. The spin-rotator will be a pulsed solenoid with a reversible field to enable spin flips. The vertically polarized beam will be returned back to the straight HEBT line by the system of three dipole magnets after the spin rotator solenoid. The low-energy polarimeter can be installed in the straight beam line section after the second dipole magnet. To measure transverse (vertical) polarization of the 3He beam at 5-6 MeV, the spin correlated asymmetry of 3He scattering on a 4He gas target (~5 Torr) will be measured with left/right symmetric strip detectors. Paper will present status of the project. PB - JACoW Publishing CP - Geneva, Switzerland SP - 2440 EP - 2442 KW - dipole KW - polarization KW - solenoid KW - scattering KW - target DA - 2019/06 PY - 2019 SN - 978-3-95450-208-0 DO - DOI: 10.18429/JACoW-IPAC2019-WEPMP048 UR - http://jacow.org/ipac2019/papers/wepmp048.pdf ER -