Effect of Compton Scattering on the Electron Beam Dynamics at the ATF Damping Ring

Abstract : Compton scattering provides one of the most promising scheme to obtain polarized positrons for the next generation of $e^-$ -- $e^+$ colliders. Moreover it is an attractive method to produce monochromatic high energy polarized gammas for nuclear applications and X-rays for compact light sources. In this framework a four-mirror Fabry-Pérot cavity has been installed at the Accelerator Test Facility (ATF - KEK, Tsukuba, Japan) and is used to produce an intense flux of polarized gamma rays by Compton scattering \cite{ipac-mightylaser}. For electrons at the ATF energy (1.28 GeV) Compton scattering may result in a shorter lifetime due to the limited bucket acceptance. We have implemented the effect of Compton scattering on a 2D tracking code with a Monte-Carlo method. This code has been used to study the longitudinal dynamics of the electron beam at the ATF damping ring, in particular the evolution of the energy spread and the bunch length under Compton scattering. The results obtained are presented and discussed. Possible methods to observe the effect of Compton scattering on the ATF beam are proposed.
Document type :
Poster communications

http://hal.in2p3.fr/in2p3-00635111
Contributor : Sabine Starita <>
Submitted on : Monday, October 24, 2011 - 4:29:49 PM
Last modification on : Wednesday, September 16, 2020 - 4:20:32 PM

Identifiers

• HAL Id : in2p3-00635111, version 1
• ARXIV : 1110.3241

Citation

I. Chaikovska, C. Bruni, N. Delerue, A. Variola, F. Zomer, et al.. Effect of Compton Scattering on the Electron Beam Dynamics at the ATF Damping Ring. 2nd International Particle Accelerator Conference (IPAC'11), Sep 2011, San Sebastian, Spain. Joint Accelerator Conferences Website, WEPC051, pp.2127-2129, 2011. ⟨in2p3-00635111⟩

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