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A Method to Polarize Stored Antiprotons to a High Degree

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arxiv physics/0410067 v1 pith:NZFBQPVN submitted 2004-10-11 physics.acc-ph

A Method to Polarize Stored Antiprotons to a High Degree

classification physics.acc-ph
keywords antiprotonspolarizedbeamringspintargetacceptanceantiproton
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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Polarized antiprotons can be produced in a storage ring by spin--dependent interaction in a purely electron--polarized hydrogen gas target. The polarizing process is based on spin transfer from the polarized electrons of the target atoms to the orbiting antiprotons. After spin filtering for about two beam lifetimes at energies $T\approx 40-170$ MeV using a dedicated large acceptance ring, the antiproton beam polarization would reach $P=0.2-0.4$. Polarized antiprotons would open new and unique research opportunities for spin--physics experiments in $\bar{p}p$ interactions.

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