Readout circuit, readout method and readout system of SiPM array
A readout circuit and array technology, applied in the field of radiation detectors, can solve the problems of lowering the detection limit of SiPM array energy, etc.
Pending Publication Date: 2022-04-12
无锡通透光电科技有限公司
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[0004] The purpose of this application is to provide a SiPM array readout circuit and a SiPM array readout system, which can reduce false triggering of noise events, effectively improve the problem that the larger the area of the SiPM array is, the higher the dark noise level, and can greatly reduce the energy detection of the SiPM array lower limit
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[0034] Below, the present application will be further described in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, on the premise of not conflicting, the various embodiments described below or the technical features can be combined arbitrarily to form a new embodiment. .
[0035] An embodiment of the present application provides a readout circuit 100 for a SiPM array, which can reduce false triggering of noise events, effectively reduce the dark noise level of the SiPM array, and greatly reduce the lower limit of energy detection of the SiPM array.
[0036] figure 1 It is a structural block diagram of a SiPM array readout circuit provided in an embodiment of the present application. figure 2 It is a structural schematic diagram of a SiPM array readout circuit provided in an embodiment of the present application. Such as figure 1 and figure 2 As shown, the SiPM array readout circuit 100 of the embodiment of the pres...
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The invention provides a SiPM array reading circuit, method and system. The readout circuit comprises an SiPM array which is divided into a preset number of groups, and SiPM chips in the SiPM array detect optical signals emitted by luminous bodies coupled with the SiPM chips; the operational amplifier is used for summing the optical signals for each group and outputting a summing result of each group; the total operational amplifier is used for carrying out operation on the summation result of the operational amplifier to obtain a total summation signal; a comparator which compares the summing results from the operational amplifiers with a preset threshold value, and outputs the comparison results of the comparator; the AND gate is used for combining all the comparison results to generate a control signal; and the analog switch is used for outputting the total summation signal according to the control signal. According to the method and the device, false triggering of noise events can be reduced, and the energy detection lower limit of the SiPM array is greatly reduced.
Description
technical field [0001] The present application relates to the field of radiation detectors, in particular to a readout circuit, a readout method and a readout system of a SiPM array. Background technique [0002] With the development of semiconductor technology, silicon photomultiplier (SiPM) has gained more and more popularity in the field of radiation detectors due to its small size, low operating voltage, insensitivity to magnetic fields, good response uniformity, easy packaging, and low cost. more and more widely used. Compared with traditional photomultiplier tubes (PMTs), silicon photomultiplier devices can solve the problems of detecting, timing, and quantifying low light signals down to the single-photon level, and have almost all the advantages of solid-state sensors. [0003] However, since the dark noise count rate of silicon photomultiplier tubes is much higher than that of photomultiplier tubes (PMTs), there is still room for further improvement in applications...
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Inventor 屈春蕾
Owner 无锡通透光电科技有限公司