强激光与粒子束, 2005, 17 (7): 1101, 网络出版: 2006-04-28   

Tune调制对HIRFL-CSRm动力学孔径影响的模拟研究

Effect of tune modulation on the dynamic aperture of HIRFL-CSRm
作者单位
1 中国科学院近代物理研究所,兰州,730000
2 中国科学院研究生院,北京,100039
摘要
通过引进包含tune调制的传输矩阵,模拟计算了由四极铁电源纹波所引起的tune调制对HIRFL-CSRm动力学孔径的影响.模拟计算中,对HIRFL-CSRm实际(lattice)跟踪1.0×106圈.从结果可以看出,动力学孔径随调制振幅的增大迅速减小,大体呈线性变化;动力学孔径随调制tune值的变化在研究范围内也有变化,变化的范围在0.049~0.089 m之间.
Abstract
The tune modulation due to power supply ripple of magnets has a strong destabilizing effects on non-linear motion. In order to investigate this effect on the dynamic aperture of HIRFL-CSRm, a tracking study was done. The impacts of quadrupole power supply ripple were modelled by modulating the linear Betatron oscillation tunes and the dynamic aperture was calculated through tracking particle one million turns in HIRFL-CSRm lattice. It turned out that the dynamic aperture decreased roughly linearly with the amplitude of the tune modulation. The dependence of the dynamic aperture on the frequency of the modulation was also studied, but it was relatively weak.
参考文献

[1] Chen T, Peggs S. Beam-beam tune modulation, the driven gravity pendulum, and josephson junctions[A]. Proceedings of Beam-beam Effects in Crcular Colliders[C]. Novosibirsk, 1989. 98-105.

[2] Zimmermann F. Dynamic aperture and transverse proton diffusion in HERA[R]. SLAC-PUB-6458.1994.

[3] Brüning O S. An analysis of the long term stability of the particle dynamics in hadron storage ring[R]. DESY, 94-085.1994.

[4] Altuna X. The 1991 dynamic aperture experiment at the CERN SPS[A]. AIP Conf Proc[C]. 1991,255:355-369.

[5] Chao A W. Experimental investigation of nonlinear dynamics in the FermilabTevatron[J]. Phys Rev Lett, 1988, 61:2752-2755.

[6] Lee S Y. Experimental determination of a nonlinear Hamiltonian in a synchrotron[J]. Phys Rev Lett, 1991, 67:3768-3771.

[7] Todesco E. Dynamic aperture estimate and phase space distortions in nonlinear betatronic motion[J]. Phys Rev E,1996, 53:4067-4076.

[8] Sen T, Chao A W, Yan Y T. Effect of tune modulation on the dynamic aperture of the SSC lattice[A]. IEEE 1991 PAC[C]. San Fransco, US 1991.345.

[9] Parzen G. Tune modulation due to gradient ripple and the dynamic aperture[R]. BNL Report AD-RHIC-124.1993.

[10] Brüning O S. Diffusion in a FODO cell due to modulation effects in the presence of nonlinear fields[J]. Part Accel, 1993, 41:133-151.

杨建成, 夏佳文, 武军霞, 夏国兴, 刘伟, 殷学军, 刘勇, 周雪梅, 冒立军. Tune调制对HIRFL-CSRm动力学孔径影响的模拟研究[J]. 强激光与粒子束, 2005, 17(7): 1101. YANG Jian-cheng, XIA Jia-wen, WU Jun-xia, XIA Guo-xing, LIU Wei, YIN Xue-jun, LIU Yong, ZHOU Xue-mei, MAO Li-jun. Effect of tune modulation on the dynamic aperture of HIRFL-CSRm[J]. High Power Laser and Particle Beams, 2005, 17(7): 1101.

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