2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/157874This document contains a proposal of the BEPC-II collider beam energy calibration system (IHEP, Beijing). The system is based on Compton backscattering of carbon dioxide laser radiation, producing a beam of high energy photons. Their energy spectrum is then accurately measured by HPGe detector. The high-energy spectrum edge will allow to determine the average electron or positron beam energy with relative accuracy about 3x10^-5.Budker INP 2008-4 (Preprint)Accelerator PhysicsHigh Energy Physics - Experimenttext