Wave-shifting optical fiber type radiation detector

The invention discloses a wave-shifting optical fiber type radiation detector which comprises a fixing seat, a first light reflecting layer is arranged on a bottom plate of the fixing seat, an optical fiber fixing block is arranged on the upper portion of the first light reflecting layer, an optical fiber guide block is arranged at one end of the fixing seat, and wave-shifting optical fibers are arranged in the optical fiber fixing block and the optical fiber guide block in a penetrating mode. A plastic scintillator layer is arranged above the wave-shifting optical fiber, a coupling agent is filled between the wave-shifting optical fiber and the plastic scintillator layer, a second reflective layer is arranged above the plastic scintillator layer, and a mesh enclosure panel is arranged above the second reflective layer; a signal processing PCB is arranged on the side, close to the optical fiber guide block, in the fixing base, and a silicon photomultiplier used for collecting flickering light from the wave-sh