Spin tracking study of the AGS | Zendy

Haijing Huang | Zendy; T. Roser | Zendy; A. Luccio | Zendy

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Spin tracking study of the AGS

Author(s) -

Haijing Huang,

T. Roser,

A. Luccio

Publication year - 1997

Publication title -

osti oai (u.s. department of energy office of scientific and technical information)

Language(s) - English

Resource type - Reports

DOI - 10.2172/495773

Subject(s) - betatron , depolarization , physics , polarization (electrochemistry) , beam (structure) , coupling (piping) , solenoidal vector field , oscillation (cell signaling) , resonance (particle physics) , spin (aerodynamics) , tracking (education) , atomic physics , nuclear magnetic resonance , optics , chemistry , materials science , mechanics , psychology , pedagogy , thermodynamics , medicine , biochemistry , metallurgy , vector field , endocrinology

In the recent polarized proton runs in the AGS, a 5% partial snake was used successfully to overcome the imperfection depolarizing resonances. Although some depolarization at intrinsic resonances are expected, the level of the depolarization does not agree with a simple model calculation. A spin tracking program is then used to simulate the real polarized proton beam in the AGS. The results show that, due to the linear coupling introduced by a solenoidal 5% partial snake, the polarized beam will be partially depolarized also at the so-called coupling resonance, which is related to the horizontal betatron tune. The synchrotron oscillation also affects the beam polarization to a smaller extent

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