A megavolt-level induction cavity that uses a low remanence ratio magnetic core and generates multiple pulses in bursts

Abstract

The invention provides a megavolt-level induction cavity for generating multiple pulses in a bursting mode by means of low-remanence-ratio magnetic cores. The megavolt-level induction cavity comprises a cavity body, an inner barrel, the magnetic cores, a cathode body and a high-voltage insulator stack, the inner barrel is located in the cavity body, the inner barrel and the cavity body are coaxially arranged, the inner barrel, the cathode body and the high-voltage insulator stack are sequentially arranged in the cavity body in the axial direction of the cavity body, the magnetic cores are arranged around the inner barrel, the area between the outer wall of the high-voltage insulator stack and the inner wall of the cavity body of the induction cavity is an induction cavity primary area, the area in the high-voltage insulator stack is an induction cavity secondary area, Br / Bs of the low-remanence-ratio magnetic cores of the induction cavity is less than 0.15, no extra magnetic core is needed for resetting and isolating circuits, the magnetic cores can automatically return to original positions within a pulse interval, the voltage seconds of the magnetic cores can be repeatedly utilized, and the induction cavity can generate the multiple pulses in the bursting mode at MHz repetition frequency as long as the voltage seconds of the magnetic cores are higher than the voltage second integral of each individual pulse. Compared with a traditional induction cavity with high-remanence-ratio magnetic cores, the megavolt-level induction cavity has the advantages that the utilization efficiency of the magnetic cores can be remarkably improved, and the number and the economic cost of the magnetic cores are reduced.

Description

technical field [0001] The invention relates to an induction cavity of an induction voltage adder (induction voltage adder, IVA), and the working voltage is 1-1.5MV. Background technique [0002] High-energy pulsed X-ray flash photography can see through the structure, state and evolution process of high-speed moving substances. It is an important diagnostic tool for high-speed transient processes such as high-performance explosive fluid mechanics experiments. It can also be used in plasma physics, materials, biology, medicine and other fields. transient process research. The development trend of pulse X-ray radiography is to use pulse trains with a certain time interval to perform multi-pulse framing photography on the target detonation process. Both at home and abroad are actively exploring and developing multi-pulse X-ray sources, mainly including linear induction accelerator (Linear induction accelerator, LIA) and induction voltage adder (Induction voltage adder, IVA). ...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems of the existing IVA induction cavity of the high remanence ratio magnetic ring working in the multi-pulse output mode, the use efficiency of the magnetic core is low, the structure size of the induction cavity is large, and the economic cost is high. Core, burst generating multi-pulse megavolt induction cavity

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