The energy of laser Compton scattering gamma rays was
measured with a detector calibrated by gamma rays from
radioisotopes for CO2 (around 10.6 mm) and Nd(1.064 mm,
0.532mm) lasers.The electron beam energy derived from the
maximum gamma ray energy agreed to an accuracy of 1%
with the electron beam energy,which was derived from the
physical parameters for the bending electromagnets in the
electron storagering