Scintillation optical fiber detector

Abstract

The invention relates to a scintillation fiber optic detector. The equipment comprises a plurality of groups of scintillation optical fiber bundles (10) which extend in parallel and are sequentially arranged side by side in the vertical direction of the extending direction; two fixed brackets (20) that are respectively fixed at the end parts of the scintillation optical fiber bundle; and two groups of photoelectric detection devices (30), which are respectively fixed on the corresponding fixed brackets (20) and are attached to the end surfaces of the scintillation optical fiber bundles (10) so as to be electrically coupled with the scintillation optical fiber bundles (10), a large number of scintillation optical fibers are grouped into a plurality of scintillation optical fiber bundles according to detection requirements and requirements through calculation, and the scintillation optical fiber bundles extending in parallel are arranged side by side; therefore, the invalid area of the detection layer formed by the optical fiber bundles can be reduced, and the volume and the weight of the scintillation optical fiber detector can be reduced due to the fact that the number of each group of optical fibers is small and the reserved bending length is short.

Description

technical field [0001] The present disclosure relates to the field of radiation detection, in particular to a scintillation optical fiber detector. Background technique [0002] In the decommissioning treatment of nuclear facilities, the environmental soil 90 The measurement of Sr content is very important. The stacked scintillator detector can eliminate the redundant interference rays in the signal and realize the measurement of Sr content in soil. 90 Measurement of Sr. At present, the commonly used detection equipment is to form a layer of detection surface with hundreds of optical fibers, and the two ends are tightly bundled into a bundle. After the end face is polished, it is coupled with the PMT. The signal is analyzed in the back-end circuit to get the result. The problem with this collection method is that hundreds of optical fibers converged into a bundle will cause many invalid areas on the detection surface due to mutual influence, and at the end of the fiber bun...

AI Technical Summary

Problems solved by technology

At present, the commonly used detection equipment is to form a layer of detection surface with hundreds of optical fibers, and the two ends are tightly bundled into a bundle. After the end face is polished, it is coupled with the PMT. The signal is analyzed in the back-end circuit to get the results. The problem with this collection method is that hundreds of optical fibers converged into a bundle will cause many invalid areas on the detection surface due to mutual influence, and at the end of the fiber bundle, In order to control the loss of fluorescence transmission caused by excessive bending, usually a sufficient length of optical fiber is reserved for bundling, which will increase the volume and weight of the detector, and it is inconvenient to use and operate

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