Miniature gamma ray detector based on MPPC module

The invention provides a miniature gamma ray detector based on an MPPC module. The miniature gamma ray detector comprises a scintillator crystal, an MPPC module, a first-layer sealing aluminum shell,a second-layer sealing aluminum shell, an end cover, a connector assembly, a signal line, a first-layer circuit board and a second-layer circuit board; the scintillation crystal is installed in an inner cavity of the first-layer sealed aluminum shell in a sealed mode, and the MPPC module is installed on one side of the scintillation crystal and used for receiving fluorescence photon signals of thescintillator crystal. The miniature gamma ray detector in the scheme adopts a structural form of the MPPC module, the scintillator crystal, the first-layer circuit board, the second-layer circuit board, the first sealing aluminum shell and the second sealing aluminum shell; on the basis that excellent detection performance is guaranteed, the size of appearance equipment of the whole detector is reduced, so that the detect