Document Type

Conference Paper

Publication Date




Publication Title

Proceedings of the 10th International Particle Accelerator Conference



Conference Name

10th International Particle Accelerator Conference, 19-24 May 2019, Melbourne, Australia


In the Spin Transparency (ST) mode of RHIC, the axes of its Siberian snakes are parallel. The spin tune in the ST mode is zero and the spin motion becomes degenerate: any spin direction repeats every particle turn. In contrast, the lattice of a conventional collider determines a unique stable periodic spin direction, so that the collider operates in the Preferred Spin (PS) mode. Contributions of perturbing magnetic fields to the spin resonance strengths in the PS mode are usually calculated using the spin response function. However, in that form, it is not applicable in the ST mode. This paper presents a response function formalism expanded for the ST mode of operation of conventional colliders with two identical Siberian snakes in the highly-relativistic limit. We present calculations of the spin response function for RHIC in the ST mode.


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"This is a preprint - the final version is published with IOP."

Original Publication Citation

Morozov, V. S., Adams, P., Derbenev, Y. S., Filatov, Y., Huang, H., Kondratenko, A. M., Kondratenko, M. A., Lin, F., Méot, F., Ptitsyn, V., Schmidke, W. B., & Zhang, Y. (2019). Spin response function for spin transparency mode of RHIC. In M. Boland, H. Tanaka, D. Button, R. Dowd, V.R.W. Schaa, & E. Tan (Eds), Proceedings of the 10th International Particle Accelerator Conference (pp. 2791-2793). JACoW.