Status of Proton Polarization in Rhic and Ags
Spin 2004(2005)
摘要
The Relativistic Heavy Ion Collider (RHIC) has collided protons with both transverse and longitudinal polarization at a centre-of-mass energy of 200 GeV. Future running will extend this to 500 GeV. This paper describes the methods used to accelerate and manipulate polarized proton beams in RHIC and its injectors. Special techniques include the use of a partial Siberian snake and an AC dipole in the AGS. In RHIC we use superconducting helical Siberian snakes for acceleration, and eight superconducting helical rotators for independent control of polarization directions at two interaction regions. The present status and future plans for the polarized proton program will be reviewed.
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