Gas detector fabrication method, gas detector, and ray detection device

A ray detection device, comprising a shell, a field cage, a photoelectric detector and a gas detector,

• wherein the gas detector comprises a signal readout plate, a substrate, a resistive anode electrode and a detector amplification assembly, the detector amplification assembly, the resistive anode electrode, the substrate and the signal readout plate are sequentially stacked and fixed in a vertical direction, and the detector amplification assembly is located at an uppermost end;
• the detector amplification assembly comprises a support frame and a micro-grid electrode, the support frame is fixed on an upper end surface of the resistive anode electrode, and the micro-grid electrode is fixed on an upper end surface of the support frame;
• the signal readout plate comprises an upper insulating layer, metal readout electrodes and a lower insulating layer which are sequentially stacked from top to bottom, the metal readout electrodes are configured for forming a readout circuit, the upper insulating layer and the lower insulating layer are configured for isolating the metal readout electrodes from an outside, and a surface, distant from the substrate, of the upper insulating layer is a plane;
• and
• wherein a cathode electrode is arranged in the shell, a test cavity is formed in the shell, the field cage is located in the test cavity, an inside of the field cage communicates with the test cavity, and the field cage is configured for forming a uniform drift electric field;
• the photoelectric detector is fixed on an inner side wall of the shell and is located between an outer side wall of the field cage and the inner side wall of the shell, fluorescence generated by a sample in the test cavity is able to pass through a hollow portion of the field cage and is detected by the photoelectric detector, and the photoelectric detector is configured for measuring time zero of particle incidence in the sample;
• and the gas detector is located on an inner bottom surface of the shell and is opposite to the cathode electrode, and the gas detector is configured for measuring time, a position and an amplitude of a particle ionization signal in the sample reaching the plane of the gas detector.