b-dot probe and current spatial distribution measurement system for blocking magnetically insulating sheath electrons

A technology of magnetic insulation and current probe, applied in the direction of measuring device, only measuring current, measuring electrical variable, etc., can solve the problems of inconvenient use and complex structure of B-dot current probe, avoid inductance, simplify the assembly process, output small difference effect

Active Publication Date: 2018-02-02
NORTHWEST INST OF NUCLEAR TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the technical problems of the existing B-dot current probe or the complex structure or inconvenient use, the present invention provides a B-dot current probe with simple structure, convenient use and the ability to block magnetically insulating sheath electrons. At the same time, the present invention also provides A current spatial distribution measurement system based on the B-dot current probe

Method used

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  • b-dot probe and current spatial distribution measurement system for blocking magnetically insulating sheath electrons
  • b-dot probe and current spatial distribution measurement system for blocking magnetically insulating sheath electrons
  • b-dot probe and current spatial distribution measurement system for blocking magnetically insulating sheath electrons

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Embodiment Construction

[0047] The invention proposes a B-dot current probe covered with an insulating sheet, the core idea of ​​which is that the B-dot probe adopts a printed circuit board (printed circuit board, PCB) type magnetic induction coil. At the entrance of the B-dot probe cavity, an insulating sheet (polytetrafluoroethylene or polyimide, etc.) with a thickness of several millimeters (generally 1 to 5 mm) is covered. The covered insulating sheet can pass through the magnetic field and does not affect the normal operation of the magnetic induction coil. When the magnetic insulating sheath electrons bombard the insulating sheet, the electron energy will be deposited in the insulating sheet, thereby blocking the sheath electrons from the B-dot cavity. The thickness of the covering insulating sheet is related to the electron energy of the magnetic insulating sheath. The greater the electron energy of the sheath, the thicker the insulating sheet.

[0048] The invention will be described in deta...

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PUM

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Abstract

The invention relates to a B-dot probe blocking electrons of a magnetically insulated sheath and a current space distribution measuring system. The B-dot probe comprises a magnetic induction coil, a cable connector and a supporting and fixing device, wherein the magnetic induction coil is wired on a circuit board clockwise or anticlockwise in the same direction to form a PCB type magnetic induction coil; and the supporting and fixing device comprises a metal clasp and a metal support ring, and a stepped hole is formed at the position, just facing the top of the PCB type magnetic induction coil, at the top of the metal clasp. An insulated slice of high-molecular material is arranged in the stepped hole and fixedly connected with the metal clasp, when the B-dot probe is bombarded by electrons of the sheath of a magnetically insulated transmission line, the electrons are blocked by the insulated slice, and energy of the electrons is accumulated in the insulated slice.

Description

technical field [0001] The invention proposes a B-dot probe and a current spatial distribution measurement system, which have important applications in ultra-high power pulse transmission, vacuum magnetic insulation transmission lines, current measurement in Z-pinch load area and the like. Background technique [0002] Ultra-high power pulse transmission is the core problem in the development of large-scale pulse power systems. Magnetically insulated transmission line (MITL) is the core component for realizing (ultra) high-power pulse transmission and convergence under high electric field strength. MITL cathodic / anodic current measurement is an important method to evaluate the state of magnetic insulation and physical properties, and is the main diagnostic approach for MITL experimental research. B-dot current probes are widely used in MITL current measurement. For the magnetically insulated transmission line, whether it is the formation process of the magnetic insulation ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R19/00
CPCG01R19/0092
Inventor 魏浩孙凤举姜晓峰丛培天邱爱慈
Owner NORTHWEST INST OF NUCLEAR TECH
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