Towards the UAL open source project

Malitsky, N.; Talman, R.; Blaskiewicz, M.; Calaga, R.; Fliller, R.; Luccio, A.; Satogata, T.; Wei, J.

doi:10.1109/pac.2003.1288899

Cited by 1 publication

(2 citation statements)

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“…When entering, or exiting, a rectangular bend, however, a particle typically sees the longitudinal field B z as having a significant component transverse to its velocity. As long as P x is not too large, one may account for this effect by simply adding an extra term to (41) to obtain the rotation vector (42) ω…”

Section: 5mentioning

confidence: 99%

“…Here we present a very accurate and efficient spin-orbit tracking code, gpuSpin-Track, that we have incorporated into the UAL framework [42]. Because we have found that the accuracy of the orbital data has a significant impact on the accuracy of the spin tracking, our code relies on first performing very accurate symplectic integration for the orbital motion.…”

Section: Introductionmentioning

confidence: 99%

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Accurate and efficient spin integration for particle accelerators

Abell

Meiser

Ranjbar

et al. 2015

Phys. Rev. ST Accel. Beams

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Accurate spin tracking is a valuable tool for understanding spin dynamics in particle accelerators and can help improve the performance of an accelerator. In this paper, we present a detailed discussion of the integrators in the spin tracking code gpuSpinTrack. We have implemented orbital integrators based on drift-kick, bend-kick, and matrix-kick splits. On top of the orbital integrators, we have implemented various integrators for the spin motion. These integrators use quaternions and Romberg quadratures to accelerate both the computation and the convergence of spin rotations. We evaluate their performance and accuracy in quantitative detail for individual elements as well as for the entire RHIC lattice. We exploit the inherently data-parallel nature of spin tracking to accelerate our algorithms on graphics processing units.Comment: 43 pages, 17 figure

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Section: 5mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%