A front-end signal synthesis module for accelerator low-level control system

Abstract

The invention discloses a front-end signal synthesis module for an accelerator low-level control system, comprising: a reference working signal generating unit, an intermediate frequency signal generating unit, a local oscillator signal generating unit and a clock signal generating unit; a reference working signal generating unit and The output end of the intermediate frequency signal generating unit is connected with the input end of the local oscillator signal generating unit; the output end of the intermediate frequency signal generating unit is connected with the input end of the clock signal generating unit; the present invention adopts a frequency multiplication and frequency division parallel structure, wherein, a The structure is a parallel reference working signal generation unit and an intermediate frequency signal generation unit, and the secondary structure is a parallel local oscillator signal generation unit whose internal function is frequency mixing and a clock signal generation unit whose internal function is 4 times frequency. This structure can not only ensure the coherence between the local oscillator signal, the clock signal and the reference working signal, but also can obtain a larger frequency range while overcoming the problem of cascaded noise.

Description

technical field [0001] The invention belongs to the field of low-level control of accelerators, and more specifically relates to a front-end signal synthesis module for low-level control systems of accelerators. Background technique [0002] An accelerator is a device that continuously accelerates charged particles to obtain high energy through the action of an electromagnetic field. It usually consists of three parts: ion source or electron gun, accelerated focusing system and control system. The microwave power fed to the electron gun and the accelerating tube has a direct impact on the quality parameters of the particle beam, such as energy divergence, bunch length, and repeatability, so it is necessary to ensure that the microwave power source, that is, the amplitude and phase of the high-frequency RF signal output power Stablize. [0003] In order to achieve the stability goal of the accelerating field in the accelerating cavity, a high frequency low level radio frequ...

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Problems solved by technology

[0005] Aiming at the above defects or improvement needs of the prior art, the present invention provides a front-end signal synthesis module for the low-level control system of the accelerator, and its purpose is to solve the problem that the prior art cannot guarantee Technical issues of coherence between local oscillator signals and clock and reference working signals

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