Experimental platform for measuring detection efficiency of radiation detector

The invention relates to an experimental platform for measuring the detection efficiency of a radiation detector, which comprises a bottom plate, a plurality of fixing clamps are arranged on the bottom plate to fix the radiation detector, and a first sliding block capable of moving along a sliding rod is arranged along the axial direction of the radiation detector to fix a radioactive source so as to measure the detection efficiency along the axial direction; third sliding blocks capable of sliding along the sliding rod are arranged in the radial direction of the radiation detector, a second sliding rod is arranged in the direction perpendicular to the third sliding rod, the two ends of the second sliding rod are connected with the third sliding blocks so that the second sliding rod can move in the radial direction of the radiation detector, and the second sliding rod is provided with movable second sliding blocks. A scale is arranged on the second sliding block to fix the radioactive source, and then the det