Simulations of the interaction region in a photon-photon collider

Abstract

The status and initial performance of a simulation program CAIN for interaction region of linear colliders is described. The program is developed to be applicable for e + e − , e − e − , e − γ and γγ linear colliders. As an example of an application, simulation of a γγ collider option of NLC is reported.

Revealing Fundamental Interactions: the Role of Polarized Positrons and Electrons at the Linear Collider

“…In principle there can be a correlation due to the depolarization in the bunch. Studies with CAIN [248], however, indicate that these correlations are small. Another source of correlation can come from time dependences or spatial correlations due to the beam delivery system.…”

Design study of an optical cavity for a future photon collider at ILC

“…Their respective values were determined by a numerical optimization process using the CAIN Monte Carlo code [62,63,64] which assumes charged particles interact with a Gaussian optical beam. The center-of-mass energy was set to 500 GeV.…”

Analysis and simulation for laser-Compton cooling of electron beams

“…A laser photon of energy WL (wavelength JL ) is scattered by an electron beam of energy E~in the interaction point (1P). The kinematics of Compton scattering is characterized by the dimensionless parameter [1] --=""l+H[ã _ 4EeWL -~:+ (2) where me is electron mass. The parameters of the electron and laser beams for Laser-Compton cooling are listed in Table I and H, and then z=O.2.…”

“…In this paper, we have evaluated the effects of the Laser-Compton interaction for cooling using a Monte Carlo code [2]. This simulation calculates the effects of the nonlinear Compton scattering between the laser photons and the electrons during the multi-cooling stage, but it does not include the optics and the reacceleration linac for cooling.…”