Multi-layer scintillation detector and measurement method for high-energy proton and neutron energy spectrum measurement

Abstract

The invention discloses a multi-layer scintillation detector and a measurement method for high-energy proton and neutron energy spectrum measurement. The sensitive volume of the detector is formed by wrapping a scintillant with another scintillant; an interlayer is arranged between the inner layer scintillant and the outer layer scintillant; two photomultipliers are arranged on the two sides of the scintillants, and correspond to the two scintillants respectively; the interlayer is provided with a window in a position corresponding to the inner layer photomultiplier; the scintillants are pressure-welded and fixed by a housing; and the photomultipliers are fixed on the housing by photomultiplier bases. The detector can be used for the high-energy proton and neutron energy spectrum measurement under a charged particle, neutron and gamma ray complicated mixing field.

Description

technical field [0001] The invention relates to a radiation detection device and method, in particular to an energy spectrum measurement device and method suitable for high-energy protons and neutrons in complex mixed fields. Background technique [0002] Human space activities are concentrated in the aviation space below 20km and the outer space above 100km, and the area between aviation space and outer space is called the adjacent space (20km ~ 100km). Adjacent space has a good prospect for military applications. At present, all military powers in the world are stepping up related research work. The strategic position of adjacent space is important, and its control and development are inevitable for our country to further improve its military capabilities. The development of near space must first understand the near space environment, including meteorological environment and radiation environment. The understanding of the radiation environment in the near space mainly re...

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Problems solved by technology

However, there are certain shortcomings in this scheme: two kinds of scintillators will interfere with each other, and one scintillator has an absorption and attenuation effect on the other scintillator's luminescence; plastic flash must have a slower luminescence decay time to pass The pulse width identifies the proton event, so it is difficult to increase the count rate; at the same time, the signal is more complex, and the requirements for the back-end discrimination circuit are higher

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