Direct-cooling type high integrated level charge sensitive pre-amplifier

Abstract

The invention discloses a direct-cooling type high integrated level charge sensitive pre-amplifier. The direct-cooling type high integrated level charge sensitive pre-amplifier comprises an unit circuit; n unit circuits are integrated on a circuit board; the circuit board is installed on a heat-conducting plate; the heat-conducting plate and a shield box are oppositely fixed together to pack the circuit board at the inner parts of both to form an amplifying circuit component; m amplifying circuit components are uprightly installed on a base to form a m*n amplifier array, wherein m and n are natural numbers. For adopting the surface packaging electronic element, integrated aluminum alloy, or stainless steel or copper heat plates, copper or stainless steel metal base and U-type inner pipe cooling fluid circulation and integrated aluminum alloy or copper shield metal, the invention can effectively perform the electromagnetic isolation, eliminate the electronic crosstalk; and the noise is small. The amplifier of the invention has high integrated level, and the integrated level can reach 1600 paths and even more. The amplifier in any scale can be made according to the actual requirement.

Description

technical field [0001] The invention relates to a charge-sensitive preamplifier, in particular to a direct-cooling high-integration charge-sensitive preamplifier. Background technique [0002] In various physical and chemical experiments, space radiation detection, medical imaging and other engineering measurements and scientific research, the charge-sensitive preamplifier can detect radiation particles (including electrons, electrons, Other charged particles, cosmic rays, photons, etc.) signals are converted into electronic pulse signals. Therefore, the performance index of the charge-sensitive preamplifier directly determines the quality and measurement efficiency of the measurement data, and it is the key equipment of the measurement system. At present, there are some single-channel charge-sensitive preamplifier products on the market, almost all of which are imported from abroad. [0003] The unit circuit of the charge-sensitive preamplifier includes: the charge quanti...

AI Technical Summary

Problems solved by technology

However, the general charge-sensitive preamplifier products have many cost and technical problems, such as: 1) high cost; 2) large size and volume; 3) low integration, generally 1 to 16 channels; 4) input and output Difficulty in circuit interconnection; 5) Self-excited oscillation is prone to occur; 6) Electronic crosstalk is easily generated between amplifiers; 7) When used in strong interference and high noise environments such as accelerators and spaces, the signal-to-noise ratio is low, and small signals cannot be identified; 8) Due to heat dissipation and cooling difficulties, it cannot work for a long time in a vacuum; etc.

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