High-order horizontal resonances in the beam-beam interaction

Chen, T; Irwin, J.; Siemann, R.H.

doi:10.1016/s0168-9002(97)01072-3

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Beam Lifetime Due To Beam-beam Interactions1

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2001

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“…11 and 12 show the normalized beam lifetime with respect to the beam-beam tune shifts for both flat and round beams. 6 The maximum beam-beam tune shifts for flat and round beams…”

Section: Beam Lifetime Due To Beam-beam Interactionsmentioning

confidence: 99%

Analytical estimation of the beam–beam interaction limited dynamic apertures and lifetimes in e+e− circular colliders

Gao

2001

Nuclear Instruments and Methods in Physics Research Section A:

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Physically speaking, the delta function like beam-beam nonlinear forces at interaction points (IPs) act as a sum of delta function nonlinear multipoles. By applying the general theory established in ref.[1], in this paper we investigate analytically the beam-beam interaction limited dynamic apertures and the corresponding beam lifetimes for both the round and the flat beams. Relations between the beam-beam limited beam lifetimes and the beam-beam tune shifts are established, which show clearly why experimentally one has always a maximum beam-beam tune shift, ξ y,max , around 0.045 for e + e − circular colliders, and why one can use round beams to double this value approximately. Comparisons with some machine parameters are given. Finally, we discuss the mechanism of the luminosity reduction due to a definite collision crossing angle.

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“…11 and 12 show the normalized beam lifetime with respect to the beam-beam tune shifts for both flat and round beams. 6 The maximum beam-beam tune shifts for flat and round beams…”

Section: Beam Lifetime Due To Beam-beam Interactionsmentioning

confidence: 99%

Analytical estimation of the beam–beam interaction limited dynamic apertures and lifetimes in e+e− circular colliders

Gao

2001

Nuclear Instruments and Methods in Physics Research Section A:

View full text Add to dashboard Cite

show abstract

High-order horizontal resonances in the beam-beam interaction

Cited by 1 publication

References 4 publications

Analytical estimation of the beam–beam interaction limited dynamic apertures and lifetimes in e+e− circular colliders

Analytical estimation of the beam–beam interaction limited dynamic apertures and lifetimes in e+e− circular colliders

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