  In this paper we present a method of scintillation detector energy
calibration using the gamma-rays. The technique is based on the Compton
scattering of gamma-rays in a scintillation detector and subsequent
photoelectric absorption of the scattered photon in the Ge-detector. The
novelty of this method is that the source of gamma rays, the germanium and
scintillation detectors are immediately arranged adjacent to each other. The
method presents an effective solution for the detectors consisting of a low
atomic number materials, when the ratio between Compton effect and
photoelectric absorption is large and the mean path of gamma-rays is comparable
to the size of the detector. The technique can be used for the precision
measurements of the scintillator light yield dependence on the electron energy.
