Neutron flux and energy spectrum measuring system of helium cooling solid multiplication agent tritium producing cladding

Abstract

The invention relates to fusion reactor tritium generating cladding neutron measuring. Helium cooling solid breeding agent tritium generating cladding neutron flux and spectrometry measuring system includes packaging foil pneumatic transmitting activation analysis subsystem which includes activation foil and pneumatic transmitting device. The activation foil is set in the measuring tube connected with operating station through cooling layer and biological shielding layer. The operating station is set helium cooling circuit and connected with helium gas dynamic force union station and HPGe measuring station connected with electronics and data gaining system. The solid breeding agent tritium generating cladding is also set micro-fission chamber combination detector and natural diamond neutron energy spectrum detector which are connected with operating station through current sensitive preamplifier and charge sensitive preamplifier, which is connected with electronics and data gaining system.

Description

technical field [0001] The invention relates to the field of neutron measurement of tritium-producing cladding of fusion reactors. Background technique [0002] The neutron tritium-producing envelope (TBM) is one of the key technologies that the International Thermonuclear Experimental Reactor (ITER) needs to focus on. It is related to the supply of tritium fuel for the thermonuclear fusion reactor. There is almost no natural tritium in nature, and the small amount of tritium produced by the fission reactor is very expensive. Under the condition of full power operation, the International Thermonuclear Experimental Reactor needs about tens of kilograms of tritium per year, and a commercial fusion reactor with a power of 1GW The reactor needs 150kg of tritium as fuel every year. The existing tritium production methods cannot meet the fuel demand of ITER and future commercial fusion reactors; and according to the current price of tritium, the operating cost of ITER will be extr...

AI Technical Summary

Problems solved by technology

At present, the design of tritium-producing cladding mainly relies on the Monta-Carlo simulation code calculation (MCNP) of fusion neutronics transport in nuclear physics and nuclear engineering, but the actual situation and process are often very complicated and difficult to use. The mathematical-physical model accurately describes it, and since the nuclear database used in the calculations, although up-to-date, cannot be the most accurate, and the nuclear database is also in the process of continuous improvement and accuracy, the results of any simulation calculations Although it has guiding significance for scientific research and engineering design, it must not replace scientific experiments and field tests

In the tritium-producing cladding measurement system designed in Europe and Japan, only the activation analysis measurement system is included to monitor the neutron flux, and to measure the fusion neutron energy spectrum and the evolution of neutron flux with time in various energy segments In addition, due to the extremely harsh diagnostic environment in the neutron-producing tritium envelope, strict requirements are placed on the design of detectors, electronics, pneumatics and cooling devices

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