Device and method for neutron energy spectrum measurement through adoption of single proton track imaging

Abstract

The present invention relates to a device and method for neutron energy spectrum measurement through adoption of single proton track imaging. The device comprises a neutron conversion body, a proton track luminescence chamber, an imaging system and a power supply. The neutron conversion body comprises a neutron source, a neutron-proton conversion target and a diaphragm; the proton track luminescence chamber comprises a chamber, a proton incidence sealing window arranged at one end of the outer portion of the chamber, a cylindrical multi-wire structure arranged in the chamber, an inflation system and a vacuum-pumping system which are internally communicated with the chamber, an optical window arranged at the outer side of the chamber and a voltage source connected with the cylindrical multi-wire structure; the cylindrical multi-wire structure is formed by one anode wire located at the cylinder axis and a plurality of cathode wires distributed around the anode wires; after the neutron source emits neutron beams and the neutron beams are subjected to the conversion of the neutron-proton conversion target to change the direction, the neutron beams pass through the diaphragm and the protons to income the seal window and enter the chamber, and the imaging system controls the imaging through the charge signals collected by the anode wires, and the power source is connected with the cylindrical multi-wire structure.

Description

technical field [0001] The invention relates to a neutron energy spectrum detection method and technology in radiation detection, in particular to a neutron energy spectrum measurement device and method based on single proton track imaging. Background technique [0002] The measurement of neutron energy spectrum occupies an extremely important position in the diagnosis of fusion plasma. As the most direct product of the nuclear fusion reaction, neutrons carry a wealth of information about the plasma fusion process and the state of ions. From the neutron energy spectrum, key parameters such as fusion plasma temperature, bulk density, and fusion power can be obtained. It is the most direct and effective method to meet the design requirements. At the same time, fusion plasma diagnosis has high requirements on the accuracy of neutron spectrum measurement. At present, the most commonly used neutron spectrum measurement methods on fusion devices are neutron time-of-flight method ...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a high-sensitivity and high-resolution neutron spectrum measurement device and method based on single proton track imaging, which is used to solve the low sensitivity of the existing fusion neutron spectrum measurement method and the practical experiment The problem that the neutron energy spectrum cannot be inverted from the proton beam track in

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