A Study of Monolithic CMOS Pixel Sensors Back-thinning and their   Application for a Pixel Beam Telescope
  This paper reports results on a detailed study of charge collection and signal-to-noise performance of CMOS monolithic pixel sensors before and after back-thinning and their application in a pixel beam telescope for the ALS 1.5 GeV $e^-$ beam test facility. 
Marco Battaglia, Devis Contarato, Piero Giubilato, Leo Greiner,   Lindsay Glesener, Benjamin Hooberman