Limitation on the luminosity of e+e- storage rings due to beamstrahlung
Abstract
Particle loss due to the emission of single energetic beamstrahlung photons in beam collisions is shown to impose a fundamental limit on storage-ring luminosities at energies greater than 2E~140 GeV for head-on collisions and 2E~40 GeV for crab-waist collisions. Above these threshold energies, the suppression factor due to beamstrahlung scales as 1/E^{4/3}, and for a fixed power of synchrotron radiation, the luminosity L is proportional to R/E^{13/3}, where R is the collider radius. For 2E > 150 GeV, both collision schemes have similar luminosity limits. The luminosities attainable at storage-ring and linear-collider (LC) 2E=240 GeV Higgs factories are comparable; at higher energies, LCs are preferable. This conference paper is based on my recent PRL publication [1], supplemented with additional comments on linac-ring e+e- colliders and ring e+e- colliders with charge compensation (four-beam collisions).
Keywords
Cite
@article{arxiv.1307.3915,
title = {Limitation on the luminosity of e+e- storage rings due to beamstrahlung},
author = {V. I. Telnov},
journal= {arXiv preprint arXiv:1307.3915},
year = {2013}
}
Comments
Presented at the workshop LHC on March -IHEP-LHC, 20-22 November 2012, Protvino, Russia, 12 pages, 2 figs