Effect of tune modulation on the dynamic aperture of HIRFL-CSRm

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

Volume 17 Issue 07

Jul. 2005

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Article Navigation > High Power Laser and Particle Beams > 2005 > 17(07): 0-

zhang bing-jie, yang wen-bin, zhou yuan-lin, et al. Preparation and characterization of magnetic ICF target by electroless plating[J]. High Power Laser and Particle Beams, 2007, 19.

Citation:

yang jian-cheng, xia jia-wen, wu jun-xia, et al. Effect of tune modulation on the dynamic aperture of HIRFL-CSRm[J]. High Power Laser and Particle Beams, 2005, 17.

zhang bing-jie, yang wen-bin, zhou yuan-lin, et al. Preparation and characterization of magnetic ICF target by electroless plating[J]. High Power Laser and Particle Beams, 2007, 19.

Citation:

yang jian-cheng, xia jia-wen, wu jun-xia, et al. Effect of tune modulation on the dynamic aperture of HIRFL-CSRm[J]. High Power Laser and Particle Beams, 2005, 17.

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Effect of tune modulation on the dynamic aperture of HIRFL-CSRm

1.
Institute of Modern Physics,Chinese Academy of Sciences,P.O.Box 31,Lanzhou 730000,China;
2.
Graduate School of Chinese Academy of Sciences,Beijing 100039,China

Publish Date: 2005-07-15

Abstract

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.
- tune modulation,
- transport matrix,
- dynamic aperture

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