1203.6563 (V. I. Telnov)

Restriction on the energy and luminosity of e+e- storage rings due to
beamstrahlung    [PDF]

V. I. Telnov

It was recently suggested that a 120 x 120 GeV e+e- storage ring for the study of a 125 GeV Higgs boson could be built more simply and cheaply than a linear collider. It was also argued that the "crab waist" collision scheme would allow a storage ring to surpass a linear collider in luminosity up to 2E=500 GeV. We demonstrate that particle loss due to beamstrahlung (synchrotron radiation in beam collisions) reduces beam lifetime at the proposed storage rings to nearly zero. Reasonable beam lifetime can be achieved only at the price of a considerable reduction in luminosity. At 2E=240 GeV, the luminosity may still be sufficient; however, at 2E=400-500 GeV, the luminosity would be a factor 15-25 smaller than desired.

View original: http://arxiv.org/abs/1203.6563