Time-of-flight detector based on Cherenkov radiation detection and manufacturing method thereof

Abstract

The invention discloses a time-of-flight detector based on Cherenkov radiation detection and a manufacturing method thereof. The detector comprises a Cherenkov radiator, a light emitting surface of the Cherenkov radiator is plated with a photocathode, and an anode array type photoelectric converter is arranged behind the photocathode; the Cherenkov radiator is of a two-dimensional array structure, low-refractive-index transparent optical material layers are arranged on the opposite side faces of every two adjacent array units respectively, the space between the low-refractive-index transparent optical material layers is filled with high-reflective materials, one end of the two-dimensional array structure is a light inlet face, and the other end of the two-dimensional array structure is a light outlet face. The Cherenkov radiators are used for interacting with incident rays to generate Cherenkov photons, constraining the Cherenkov photons in the corresponding array units and transmitting the Cherenkov photons to the photocathode; the photocathode is used for converting the input Cherenkov light into photoelectrons and inputting the photoelectrons into the anode array type photoelectric converter; and the anode array type photoelectric converter is used for amplifying the input photoelectrons and then outputting the amplified photoelectrons. According to the invention, the number of detected photons and the position resolution capability are improved.

Description

technical field [0001] The invention belongs to the field of nuclear radiation detection and nuclear technology application, in particular to an array type time-of-flight detector based on Cherenkov radiators and a manufacturing method thereof. Background technique [0002] In the field of nuclear radiation detection, the detector as the first step in detecting particles is the basis for all subsequent nuclear technology and nuclear analysis applications. The combination of different particle detection materials and different detector types can be applied to different scenarios. One commonly used detector type is a scintillator combined with a silicon photomultiplier tube (SiPM) or a photomultiplier tube (PMT) to detect radiation. An important application is the measurement of time-of-flight (TOF). The time-of-flight technology uses the scintillation light signal generated by a pair of annihilation photons in the scintillator for time discrimination, and accurately measures ...

AI Technical Summary

Problems solved by technology

Overall, although the current integrated MCP-PMT has a design for multi-anode structures, its position resolution is poor and it cannot make good use of Cherenkov photons.

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