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High voltage pulse modulator klystron protector

A technology of high-voltage pulse modulation and protection device, applied in the field of circuits, can solve the problem of not being able to protect the safety of high-frequency systems well

Inactive Publication Date: 2014-04-23
BEIJING CHANGFENG BROADCASTING COMM EQUIP
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  • Abstract
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Problems solved by technology

But the current high-voltage pulse modulator klystron protection device can not protect the safety of the high-frequency system well

Method used

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Embodiment Construction

[0016] Preferred embodiments of the present invention will be specifically described below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of the application and are used together with the embodiments of the present invention to explain the principle of the present invention. For the sake of clarity and simplicity, detailed descriptions of known functions and constructions in the devices described herein will be omitted when it may obscure the subject matter of the present invention.

[0017] The invention provides a protection device for a klystron of a high-voltage pulse modulator, see figure 1 , which includes: a driver and a detection circuit, the driver and the detection circuit are connected in series between the ignition tube G2 and the transformer;

[0018] The energy storage capacitor C1 is connected in parallel with the high-voltage power supply; the transformer, the klystron G1, and the current-limiting resistor R2 ...

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Abstract

The invention discloses a high voltage pulse modulator klystron protector, comprising a driver and a detection circuit, wherein the driver and the detection circuit are connected in series between an ignitron G2 and a transformer; the current data of a klystron G1 are collected in real time through the transformer, and sent to the detection circuit; when the detection circuit detects that the current of the klystron G1 exceeds a predetermined threshold, the detection circuit triggers the driver to generate high voltage to break over the ignitron G2, and the energy of an energy storage capacitor C1 is discharged through R1 and the ignitron G2. According to the high voltage pulse modulator klystron protector, the pulse anodizing current is sampled through the current transformer, a driving signal required for the triggering of the driver is also monitored and generated through the current transformer, and the ignitron is driven by the driver to break over and discharge high-voltage capacitive stored energy; as an optical signal is adopted as the driving signal generated after current detection, the work stability is comparatively high, and the spurious triggering probability is decreased greatly.

Description

technical field [0001] The invention relates to the field of circuit technology, in particular to a protection device for a klystron of a high-voltage pulse modulator. Background technique [0002] China Spallation Neutron Source (CSNS for short) has been officially approved by the state as a large scientific project of national basic research. The Intensive Proton Linear Accelerator (LINAC) is an important part of the China Spallation Neutron Source (CSNS). [0003] In a linear accelerator (LINAC), the task of the high-frequency system is to provide the necessary energy for the acceleration of the proton beam. Since the high-frequency system works in a pulse state, the high-voltage pulse modulator and the high-voltage pulse modulator klystron protection device (high-voltage protection crowbar) are an important part of the high-frequency system and a key component for the stable operation of the entire high-frequency system . But the current high-voltage pulse modulator k...

Claims

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Application Information

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IPC IPC(8): H02H9/02
Inventor 李艳东刘鹏赵海琪
Owner BEIJING CHANGFENG BROADCASTING COMM EQUIP
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