Chinese Physics C > 2016, Vol. 40 > Issue(1): 017002 DOI: 10.1088/1674-1137/40/1/017002

Simulations to study the static polarization limit for RHIC lattice

Zhe Duan^1,2,3,,,
Qing Qin¹

1.
Key Laboratory of Particle Acceleration Physics and Technology, Institute of High Energy Physics, Chinese Academy of Sciences, 100049 Beijing, China
2.
University of Chinese Academy of Sciences, Beijing 100049, China
3.
Key Laboratory of Particle Acceleration Physics and Technology, Institute of High Energy Physics, Chinese Academy of Sciences, 100049 Beijing, China

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Abstract：
A study of spin dynamics based on simulations with the Polymorphic Tracking Code (PTC) is reported, exploring the dependence of the static polarization limit on various beam parameters and lattice settings for a practical RHIC lattice. It is shown that the behavior of the static polarization limit is dominantly affected by the vertical motion, while the effect of beam-beam interaction is small. In addition, the ''nonresonant beam polarization'' observed and studied in the lattice-independent model is also observed in this lattice-dependent model. Therefore, this simulation study gives insights of polarization evolution at fixed beam energies, that are not available in simple spin tracking.
- polarized beam,
- Polymorphic Tracking Code,
- static polarization limit,
- stroboscopic average

References

[1]	L. H. Thomas, Phil. Mag., 3: 1 (1927); V. Bargmann, L. Michel, and V. L. Telegdi, Phys. Rev. Lett., 2: 435 (1959)
[2]	D. P. Barber, J. Ellison, and K. Heinemann, Phys. Rev. ST Accel. Beams, 7: 124002 (2004)
[3]	M. Vogt, Bounds on the Maximum Attainable Equilibrium Spin Polarization of Protons at High Energy in HERA, Doctorate Thesis (Hamburg: University of Hamburg 2000); DESY preprint, DESY-THESIS 2000, 2000-054
[4]	G. H. Hoffstaetter and M. Vogt, Phys. Rev. E, 70: 056501 (2004)
[5]	I. Alexseev et al, Design Manual - Polarized proton Collider at RHIC, BNL 1998
[6]	M. Bai el al, Phys. Rev. Lett., 96: 174801 (2006)
[7]	M. Froissart and R. Stora, Nucl. Instrum. Methods, 7: 297 (1960)
[8]	Y. Derbenev, and A. Kondratenko, Part. Accel., 8: 115 (1978)
[9]	S. Y. Lee and S. Tepikian, Phys. Rev. Lett., 56: 1635 (1986)
[10]	S. Y. Lee, Spin Dynamics and Snakes in Synchrotrons, (Singapore: World Scientific, 1997)
[11]	E. D. Courant and R. D. Ruth, BNL preprint, BNL-Report 1980, 51270
[12]	S. R. Mane, FNAL preprint, FNAL-TM 1988, 1515
[13]	S. R. Mane, Nucl. Instrum. Methods A, 587: 188 (2008)
[14]	S. R. Mane, Nucl. Instrum. Methods A, 485: 277 (2002)
[15]	S. R. Mane, Nucl. Instrum. Methods A, 498: 1 (2003)
[16]	S. R. Mane, Nucl. Instrum. Methods A, 528: 677 (2004)
[17]	D. P. Barber, R. Jaganathan, and M. Vogt, Spin Tune in the Single Resonance Model with a Pair of Siberian Snakes, in Proceedings of the 15th International Spin Physics Symposium, Vol. 675, edited by Y I. Makdisi, A U. Luccio, and W. W. MacKay (New York: AIP Conference Proceedings, 2003), p.741; arXiv:physics/0502121
[18]	D. P. Barber and M. Vogt, New J. Phys., 8: 296 (2006)
[19]	G. H. Hoffstaetter, High-energy polarized proton beams: A modern view, in Springer Tracts in Modern Physics, Vol. 218, (New York: Springer-Verlag, 2006), p.1-177
[20]	V. Schoefer et al, in Proceedings of IPAC2012 (New Orleans, USA, 2012); for the measured store polarization deterioration data in RHIC fills, refer to the RHIC spin group website: https://wiki.bnl.gov/rhicspin/RHIC_spin_Group
[21]	Z. Duan, M. Bai, T. Roser and Q. Qin, in Proceedings of 21th International Spin Physics Symposium (Beijing, China, 2014)
[22]	F. Schmidt, E. Forest, and E. McIntosh, CERN preprint, CERN-SL 2002, 2002-044-AP; KEK preprint KEK-REPORT 2002. 2002-3
[23]	S. Mane, KEK preprint, KEK-Report 2009, 2009-8
[24]	E. Forest, Y. Nogiwa, The FPP, and PTC Libraries, in Proceedings of 9th International Computational Accelerator Physics Conference, edited by O. Boine-Frankenheim, S. Russenschuck, and F. Schmidt, (Geneva:, CERN, 2006), p.17
[25]	V. I. Ptitsyn and Y. M. Shatunov, Helical Spin Rotators and Snakes, in Proceedings of Third Workshop on Siberian Snakes and Spin Rotators, edited by A. Luccio and T. Roser, (New York: BNL, 1994), p.15; BNL preprint, BNL-Report 1994, 52453
[26]	Y. K. Batygin and T. Katayama, Phys. Rev. E, 58: 1019 (1998)
[27]	A. Luccio and M. Syphers, BNL preprint, AGS/RHIC/SN 1997, 068
[28]	K. Hirata, Handbook of Accelerator Physics and Engineering, edited by A. W. Chao, K. H. Mess, M. Tigner and F. Zimmermann, 2nd edition, 1st printing (ingapore: World Scientific, 2013)
[29]	K. Heinemann and G. H. Hoffsttter, Physical Review E, 54: 4240 (1996)
[30]	J. Laskar, C. Froeschl and A. Celletti, Physica D, 56: 253 (1992)
[31]	V. Ptitsyn, M. Bai and T. Roser, in Proceedings of IPAC2010 (Kyoto, Japan, 2010)

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Zhe Duan and Qing Qin. Simulations to study the static polarization limit for RHIC lattice[J]. Chinese Physics C, 2016, 40(1): 017002. doi: 10.1088/1674-1137/40/1/017002

Zhe Duan and Qing Qin. Simulations to study the static polarization limit for RHIC lattice[J]. Chinese Physics C, 2016, 40(1): 017002. doi:10.1088/1674-1137/40/1/017002 shu

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Received: 2015-04-28
Revised: 2015-08-27

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Supported by the U.S. Department of Energy (DE-AC02-98CH10886), Hundred-Talent Program (Chinese Academy of Sciences), and National Natural Science Foundation of China (11105164)

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沈阳化工大学材料科学与工程学院沈阳 110142

Simulations to study the static polarization limit for RHIC lattice

Zhe Duan^1,2,3,,
Qing Qin^1,

Corresponding author:Zhe Duan,

1. Key Laboratory of Particle Acceleration Physics and Technology, Institute of High Energy Physics, Chinese Academy of Sciences, 100049 Beijing, China
2. University of Chinese Academy of Sciences, Beijing 100049, China
3. Key Laboratory of Particle Acceleration Physics and Technology, Institute of High Energy Physics, Chinese Academy of Sciences, 100049 Beijing, China

Received Date:2015-04-28
Accepted Date:2015-08-27
Available Online:2016-01-20

Fund Project:Supported by the U.S. Department of Energy (DE-AC02-98CH10886), Hundred-Talent Program (Chinese Academy of Sciences), and National Natural Science Foundation of China (11105164)

Abstract:A study of spin dynamics based on simulations with the Polymorphic Tracking Code (PTC) is reported, exploring the dependence of the static polarization limit on various beam parameters and lattice settings for a practical RHIC lattice. It is shown that the behavior of the static polarization limit is dominantly affected by the vertical motion, while the effect of beam-beam interaction is small. In addition, the ''nonresonant beam polarization'' observed and studied in the lattice-independent model is also observed in this lattice-dependent model. Therefore, this simulation study gives insights of polarization evolution at fixed beam energies, that are not available in simple spin tracking.