Self-adaptive wide-range current and voltage conversion device

Abstract

The invention relates to a self-adaptive wide-range current and voltage conversion device read out from the front end of a current output type detector. The self-adaptive wide-range current and voltage conversion device is characterized by comprising four ways of input high-speed switchover circuits connected with a current signal Iin input in a shielding mode, each way of input high-speed switchover circuit is sequentially connected with a current and voltage conversion circuit and an output high-speed switchover circuit in series then in parallel, and then is connected with an inverting amplifying and voltage follower, voltage signals output by the inverting amplifying and voltage follower are divided into three ways, one way is analog voltage output, the other two ways are connected with a control logic circuit respectively through a high-speed low-threshold discriminator circuit and a high-speed high-threshold discriminator circuit, and the control logic circuit outputs four ways of gear controls signals to correspondingly control the switchover of the four ways of input high-speed switchover circuits and the output high-speed switchover circuits. The self-adaptive wide-range current and voltage conversion device realizes the function of input range automatic identification and switchover, is stable in circuit work, is high in switchover accuracy, is strong in anti-jamming capability, and can realize high-accuracy, low-noise and wide-range current and voltage conversion.

Description

technical field [0001] The invention relates to the technical field of reading out the front end of a current output detector, in particular to an adaptive wide-range current-voltage conversion circuit. Background technique [0002] With the continuous development of accelerator technology, in order to meet the experimental needs of more nuclear physics and interdisciplinary subjects, the energy range of accelerator output is getting larger and larger, and the requirements for beam quality are getting higher and higher. Beam diagnosis is one of the key links in the accelerator system. Beam diagnosis detectors include a large number of weak current output detectors for beam profile monitoring, beam halo monitoring and emittance monitoring, such as strips for profile monitoring Ionization chambers and multi-wire proportional chambers, wire sweepers for beam halo and emittance measurements, etc. At present, the front-end electronics of current output detectors related to beam ...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to avoid the disadvantages of poor real-time performance of the existing wide-range current signal readout technology and the inability to meet the needs of high-precision experiments. Provide an adaptive wide-range current-voltage conversion device, thereby effectively solving the problems existing in the prior art

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