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arXiv physics/0104022physics.acc-ph
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$e^+e^-$储存环束-束效应的模拟

Simulation of Beam-Beam Effects in $e^+e^-$ Storage Rings

Yunhai Cai

摘要:

本文采用新开发的粒子模拟程序对PEP-Ⅱ非对称对撞机的束-束效应进行了研究。在很大的束流范围内,模拟亮度与实测亮度的一致性在10%以内。模拟了有和没有透明对称的相干偶极振荡谱。即使在大的光束-光束参数下,相干$π$模的模拟调谐偏移也与线性化的Vlasov理论一致。相干偶极子的Poicare映射用于识别束-束共振。

英文摘要:

The beam-beam effects of the PEP-II as an asymmetric collider are studied with strong-strong simulations using a newly developed particle-in-cell (PIC) code. The simulated luminosity agrees with the measured one within 10% in a large range of the beam currents. The spectra of coherent dipole oscillation are simulated with and without the transparency symmetry. The simulated tune shift of the coherent $π$ mode agrees with the linearized Vlasov theory even at large beam-beam parameters. The Poicare map of coherent dipole is used to identify the beam-beam resonances.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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