A tracking algorithm for the stable spin polarization field in storage rings using stroboscopic averaging

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dc.creatorHeinemann, K.
dc.creatorHoffstatter, G. H.
dc.date1996-05-17
dc.date.accessioned2026-07-07T12:19:45Z
dc.date.available2026-07-07T12:19:45Z
dc.descriptionPolarized protons have never been accelerated to more than about $25$GeV. To achieve polarized proton beams in RHIC (250GeV), HERA (820GeV), and the TEVATRON (900GeV), ideas and techniques new to accelerator physics are needed. In this publication we will stress an important aspect of very high energy polarized proton beams, namely the fact that the equilibrium polarization direction can vary substantially across the beam in the interaction region of a high energy experiment when no countermeasure is taken. Such a divergence of the polarization direction would not only diminish the average polarization available to the particle physics experiment, but it would also make the polarization involved in each collision analyzed in a detector strongly dependent on the phase space position of the interacting particle. In order to analyze and compensate this effect, methods for computing the equilibrium polarization direction are needed. In this paper we introduce the method of stroboscopic averaging, which computes this direction in a very efficient way. Since only tracking data is needed, our method can be implemented easily in existing spin tracking programs. Several examples demonstrate the importance of the spin divergence and the applicability of stroboscopic averaging.
dc.description39 pages
dc.identifierhttps://arxiv.org/abs/acc-phys/9605001
dc.identifierhttp://arxiv.org/abs/acc-phys/9605001
dc.identifierPhys.Rev.E54:4240-4255,1996
dc.identifierdoi:10.1103/PhysRevE.54.4240
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/212863
dc.subjectAccelerator Physics
dc.titleA tracking algorithm for the stable spin polarization field in storage rings using stroboscopic averaging
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