Comment on "beamstrahlung considerations in laser-plasma-accelerator- based linear colliders"

Abstract

Schroeder, Esarey, Geddes, Benedetti, and Leemans have proposed a set of parameters for a TeV-scale collider based on plasma wakefield accelerator principles. In particular, it is sugested that the luminosities greater than 1034 cm-2 s-1 are attainable for an electron-positron collider. In this Comment we dispute this set of parameters on the basis of first principles. The interactions of accelerating beam with plasma impose fundamental limitations on beam properties and, thus, on attainable luminosity values.