Photodetection array anode and multi-anode photomultiplier tube

Abstract

The present disclosure provides a photoelectric detection anode and a multi-anode photomultiplier, and relates to the technical field of photoelectric detection. The photoelectric detection anode comprises a position detection layer and a time detection layer. The position detection layer comprises a plurality of metal strips arranged side by side. The ends of each metal strip in the plurality of metal strips are respectively connected to a first signal readout device for obtaining position information through collected charges. The time detection layer comprises a plurality of metal wires arranged side by side. The ends of each metal wire in the plurality of metal wires are respectively connected to a second signal readout device for obtaining time information through the waveform of the collected signals. The present disclosure realizes the independent reading of the position information of the position detection layer and the time information of the time detection layer of the photomultiplier at the same time.

Description

Technical Field

[0001] The present disclosure relates to the field of photoelectric detection technology, and in particular to a photoelectric detection array anode and a multi-anode photomultiplier tube. Background Art

[0002] A photomultiplier tube (MCP-PMT) is a vacuum detector that converts extremely weak light signals into electrical signals. A micro-channel plate photo-multiplier tube (MCP-PMT) uses a microchannel plate as its electron multiplication system. Compared to traditional electrostatically focused dynode-based PMTs, this structure significantly shortens the distance electrons travel from the photocathode to the anode. Combined with the electron multiplication properties of the microchannel plate, this PMT possesses many unique properties, particularly high-precision position and time resolution.

[0003] In the related art, data readout of photomultiplier tubes generally uses dedicated electronics or composite electronics to read out signals. Among them, dedicated electronics can directly use charge testing equipment or instruments to test the charge of a certain analog signal, such as a charge to digital converter (Q to Digital Converter, QDC). It can also use time testing equipment or instruments to test the time, such as a time to digital converter (TDC). However, the tests of the two parameters of charge and time are performed separately and cannot be tested at the same time; waveform acquisition equipment or instruments can also be used to obtain signal waveforms, such as a flash analog to digital converter (FADC). By analyzing the signal waveform, the charge information and time information of the signal are obtained at the same time. However, all of the above can only be tested once and are dedicated. Composite electronics uses active or passive fan-in fan-out units to divide a certain signal into multiple channels, realizing simultaneous and synchronous testing of charge and time information. However, such testing carries risks. For fast signals of tens of picoseconds (ps), once fan-in and fan-out processing is performed, their timing information immediately becomes very slow, and the fast timing characteristics carried by the original signal are lost. In other words, very fast fan-in and fan-out electronics are difficult to obtain or develop, and the cost is high.

[0004] The above information disclosed in this Background section is only for enhancement of understanding of the background of the present disclosure and therefore it may contain information that does not form the prior art that is already known to a person of ordinary skill in the art. Summary of the Invention

[0005] The purpose of the present disclosure is to provide a photodetection array anode and a multi-anode photomultiplier tube, which can save electronic channels and costs to a certain extent while realizing the simultaneous readout of position information and time information.

[0006] Other features and advantages of the present disclosure will become apparent from the following detailed description, or may be learned in part by practice of the present disclosure.

[0007] According to one aspect of the present disclosure, a photoelectric detection anode is provided, comprising a position detection layer and a time detection layer, wherein: the position detection layer comprises at least one metal strip, an end of which is connected to a first signal readout device for acquiring position information by collecting the charge of a signal; the time detection layer comprises at least one metal wire, an end of which is connected to a second signal readout device for acquiring time information by collecting waveform data of a signal.

[0008] According to an embodiment of the present disclosure, the position detection layer includes a plurality of the metal strips, the plurality of the metal strips are arranged in parallel, and ends of each of the plurality of the metal strips are respectively connected to the first signal readout device.

[0009] According to an embodiment of the present disclosure, the plurality of metal strips are two-dimensional metal strips arranged in two layers in an alternating manner.

[0010] According to an embodiment of the present disclosure, the two-dimensional metal strips are arranged in a mesh structure.

[0011] According to an embodiment of the present disclosure, two ends of each of the plurality of metal strips are respectively connected to the first signal reading device.

[0012] According to an embodiment of the present disclosure, the plurality of metal strips include a plurality of first metal strips and a plurality of second metal strips, the width of the first metal strips is greater than the width of the second metal strips, and the plurality of first metal strips and the plurality of second metal strips are arranged at intervals.

[0013] According to an embodiment of the present disclosure, the metal strips and the metal wires are arranged in the same direction; or the metal strips and the metal wires are arranged in alternating directions.

[0014] According to an embodiment of the present disclosure, the time detection layer includes a plurality of metal wires, and one end of each of the plurality of metal wires is respectively connected to the second signal readout device.

[0015] According to one embodiment of the present disclosure, the photodetection anode further includes a control device for controlling only the first signal readout device to obtain position information by collecting the charge of the signal, or only controlling the second signal readout device to obtain time information by collecting the waveform data of the signal, or simultaneously controlling the first signal readout device and the second signal readout device to obtain position information by collecting the charge of the signal and to obtain time information by collecting the waveform data of the signal, respectively.

[0016] According to one aspect of the present disclosure, a multi-anode photomultiplier tube is provided, comprising an entrance window for transmitting photons to be detected; a photocathode for converting photons incident through the entrance window into photoelectrons through the photoelectric effect and emitting the photons; a microchannel structure for multiplying the photoelectrons emitted by the photocathode and emitting an amplified electron stream; a photodetection anode as described above for detecting the electron stream emitted by the microchannel structure; and a vacuum container for accommodating the photocathode, the microchannel structure, and the photodetection anode, the entrance window being disposed on the vacuum container.

[0017] According to an embodiment of the present disclosure, the distance between the position of the time detection layer and the micro-channel structure is smaller than the distance between the position of the position detection layer and the micro-channel structure.

[0018] The multi-anode photomultiplier tube provided by the embodiments of the present disclosure is configured to realize simultaneous independent reading of position information and time information by providing a position detection layer including a metal strip connected to a first signal reading device and a time detection layer of a metal wire whose end is connected to a second signal reading device, and by connecting the ends of the metal strips with dedicated electronics and the ends of the metal wires with composite electronics, thereby saving electronics.

[0019] It should be understood that the foregoing general description and the following detailed description are exemplary only and are not restrictive of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above and other objects, features and advantages of the present disclosure will become more apparent by describing in detail example embodiments thereof with reference to the attached drawings.

[0021] Figure 1 A schematic diagram of an anode structure of a multi-anode photomultiplier tube is shown according to an exemplary embodiment.

[0022] Figure 2 A schematic diagram of the anode structure of another multi-anode photomultiplier tube is shown according to an exemplary embodiment.

[0023] Figure 3 A schematic diagram of the anode structure of another multi-anode photomultiplier tube is shown according to an exemplary embodiment.

[0024] Figure 4 A schematic diagram of the anode structure of another multi-anode photomultiplier tube is shown according to an exemplary embodiment.

[0025] Figure 5 A schematic diagram of the anode structure of another multi-anode photomultiplier tube is shown according to an exemplary embodiment.

[0026] Figure 6 A schematic structural diagram of another multi-anode photomultiplier tube is shown according to an exemplary embodiment. DETAILED DESCRIPTION

[0027] Example embodiments will now be described more fully with reference to the accompanying drawings. However, the example embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, these examples are provided so that this disclosure will be more comprehensive and complete and will fully convey the concepts of the example embodiments to those skilled in the art. The accompanying drawings are merely schematic illustrations of the present disclosure and are not necessarily drawn to scale. Identical reference numerals in the figures indicate identical or similar parts, and thus repeated descriptions thereof will be omitted.

[0028] In addition, the described features, structures or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, many specific details are provided to provide a full understanding of the embodiments of the present disclosure. However, those skilled in the art will appreciate that the technical solutions of the present disclosure may be practiced while omitting one or more of the specific details, or other methods, devices, steps, etc. may be adopted. In other cases, well-known structures, methods, devices, implementations or operations are not shown or described in detail to avoid obscuring various aspects of the present disclosure.

[0029] Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this disclosure, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined. The symbol " / " generally indicates an "or" relationship between the preceding and following objects.

[0030] In this disclosure, unless otherwise specified or limited, terms such as "connected" should be interpreted broadly. For example, they can mean electrically connected or capable of mutual communication; they can be directly connected or indirectly connected through an intermediary. Those skilled in the art will understand the specific meanings of these terms in this disclosure based on specific circumstances.

[0031] The multi-anode photomultiplier tube provided herein can be a multi-anode ultra-fast time response microchannel plate photomultiplier tube (FPMT), which can be used in fields such as high-energy physics, medical devices, laser technology, aerospace, astronomy, geodesy, and orbital dynamics. The FPMT is a vacuum photodetector device consisting of an incident window, a photocathode surface, a microchannel plate (MCP), and an anode. Upon incident photons, photoelectrons are emitted from the photocathode surface. The photoelectrons then enter the MCP capillary tube, collide with its inner wall, and are repeatedly multiplied before outputting a signal through the anode.

[0032] A microchannel plate photomultiplier tube (MCP-PMT) uses a microchannel plate as its electron multiplication system. Compared to traditional electrostatically focused dynode-based PMTs, this structure significantly shortens the distance electrons travel from the photocathode to the anode. Combined with the electron multiplication properties of the microchannel plate, this PMT possesses many unique properties, particularly high-precision position resolution and time resolution.

[0033] Microchannel plate-based photomultiplier tubes can be divided into two types: small-area close-focusing type (generally flat-plate FPMT) and large-area electrostatic focusing type (generally spherical or ellipsoidal, Large microchannel plate PMT, abbreviated as LPMT).

[0034] Since the large-area electrostatic focusing MCP-PMT (LPMT) prefers high collection efficiency and high detection efficiency, special adjustments have been made in its structural design, voltage division ratio, etc., resulting in its not outstanding time performance. The transit time distribution (TTS) is about tens of nanoseconds, which is not suitable for fast time response and high time resolution.

[0035] The small-area close-focus FPMT has the characteristics of fast time response, strong anti-interference ability, small size and light weight. It is particularly suitable for the detection of fast and extremely weak optical signals. Its time characteristic TTS can reach tens of picoseconds.

[0036] Currently, only a handful of companies and research institutes worldwide have developed this product, notably Hamamatsu in Japan, Photonis in France, Photek in the UK, the Russian Institute of Nuclear Physics, and the Argonne National Laboratory in the United States. However, due to the advantages of FPMT's temporal characteristics, its application in various fields is increasing, including high-energy physics, medical devices, laser technology, aerospace, astronomy, geodesy, and orbital dynamics. Several domestic research institutes have conducted related research, but their technology is backward, resulting in poor product performance and no mature products to compete internationally.

[0037] Currently, most close-coupled photomultiplier tubes (FPMTs) use an external anode-connected signal cable or other direct anode structure. When a photon passes through the window glass and strikes the photocathode, it is converted into a single photoelectron through the photoelectric effect (which has conversion efficiency). The converted photoelectron is then accelerated by a focused electric field onto the microchannel plate (MCP). (Due to the close-coupled structure, the photoelectron's flight path is short, resulting in minimal variation in the flight path from the photocathode to the MCP, further explaining the low signal timing jitter.) Because each channel of the MCP is coated with secondary electron emission material, the photoelectron undergoes multiple secondary electron emissions within the microchannel, achieving multiplication and amplification. The amplified electron stream strikes the anode, resulting in a charge pulse at the anode. To develop a position-sensitive FPMT, the FPMT's array anode structure must be redesigned so that the signal output from a single anode in the array reflects the specific location where the electron, after multiplication by the MCP, is collected by the electrostatic field, thereby obtaining corresponding position information.

[0038] Different anode structures have different signal rise times. The rise time reflects the time response of the photomultiplier tube, and the rise time is inversely proportional to the signal bandwidth. The smaller the rise time, the larger the bandwidth, as shown in the following formula:

[0039]

[0040] Where BW is the bandwidth in GHz, and RT is the rise time in nanoseconds (ns).

[0041] Figure 1 FIG. 1 is a schematic diagram of an anode structure of a multi-anode photomultiplier tube according to an exemplary embodiment. Figure 1As shown, the photodetection anode may include a position detection layer 102 and a time detection layer 104, wherein the position detection layer 102 includes at least one metal strip 1022, for example, it can be a whole metal plate, or it can be multiple metal strips 1022, and the multiple metal strips 1022 can be arranged in parallel, and the end 10222 of each metal strip 1022 in the multiple metal strips 1022 is respectively connected to a first signal readout device (not shown in the figure), which is used to obtain position information through the collected charge; the time detection layer 104 includes at least one metal wire 1042, for example, it can be one metal wire, or it can be multiple metal wires 1042, and the multiple metal wires 1042 can be arranged in parallel, and the end 10422 of each metal wire 1042 in the multiple metal wires 1042 is respectively connected to a second signal readout device (not shown in the figure), which is used to obtain time information by collecting the waveform of the signal.

[0042] In some embodiments, Figure 1 The metal strip 1022 shown may be a micro strip, and the plurality of metal wires 1042 may be several thin metal wires. The micro strip is used to read the charge to obtain position information, and the signal collected by the thin metal wire is used to obtain corresponding time information.

[0043] In some embodiments, the position detection layer 102 and the time detection layer 104 are two layers with relative positions, and the distance between the position of the time detection layer 104 and the micro-channel structure 606 can be smaller than the distance between the position detection layer 102 and the micro-channel structure 606. Figure 6 In the arrangement of the multi-anode photomultiplier tube, the time detection layer 104 can be the top layer and the position detection layer 102 can be the bottom layer. This disclosure uses this example for illustration, but is not limited to this. For example, if the multi-anode photomultiplier tube is placed horizontally, the position detection layer 102 and the time detection layer 104 are positioned in a left-right relationship.

[0044] In some embodiments, the bottom position detection layer 102 can be a one-dimensional metal strip 1022 readout structure, for example, including multiple strip-shaped, parallel-arranged metal strips, and each metal strip 1022 is connected to a first signal readout device at both ends 10222 by dedicated electronics for obtaining position information through collected electrons.

[0045] In some embodiments, the top time detection layer 104 can be arranged with multiple metal wires 1042 arranged in parallel. One end 10422 of each metal wire 1042 is connected to a second signal readout device via composite electronics, which is used to obtain time information from the collected electrons. This improves the accuracy of position resolution while achieving time readout, thereby controlling time readout costs. In some embodiments, the readout interfaces 106 at both ends of the metal strips 1022 can both utilize MCX interfaces, or various standard or custom interfaces such as LEMO and SMA. This reduces electronic channels and costs, allows for thinner FPMTs, and enables the stacking of two layers of FPMTs, reducing dead zones.

[0046] In some embodiments, the interfaces 108 read out from one end 10422 of the plurality of metal wires 1042 may all be read out using MCX interfaces, or various standard or special-shaped interfaces such as LEMO and SMA.

[0047] In some embodiments, reference Figure 1 , the plurality of metal strips 1022 and the plurality of metal wires 1042 may be arranged in an alternating direction.

[0048] In other embodiments, multiple metal strips can be arranged in the same direction as multiple metal wires. For specific implementations, please refer to Figure 2 .

[0049] In some embodiments, the number and width of the metal strips 1022 can be designed according to actual needs. For example, it can be designed as an 8-way wide strip readout, with a row of neatly arranged interfaces set at both ends of the wide strip; it can also be designed as a 32-way narrow strip readout, with multiple rows of neatly arranged interfaces set at both ends of the narrow strip.

[0050] In some embodiments, the plurality of metal strips include a plurality of first metal strips and a plurality of second metal strips. The first metal strips and the second metal strips can be two types of metal strips, the width of the first metal strips is greater than the width of the second metal strips, the plurality of first metal strips and the plurality of second metal strips are arranged at intervals, and metal strips of different widths can be connected to the same readout interface. For a specific implementation, please refer to Figure 3 .

[0051] In some embodiments, the first signal readout device may be a position information processing device, such as the above-mentioned charge testing device or instrument; the second signal readout device may be a time information processing device, such as the above-mentioned time testing device or instrument.

[0052] In other embodiments, the first signal reading device and the second signal reading device may also be the same device or instrument that integrates the position information processing function and the time information processing function.

[0053] In some embodiments, the photodetection anode may further include a control device (not shown) configured to control only the first signal readout device to acquire position information by acquiring the charge of the signal, or only the second signal readout device to acquire time information by acquiring the waveform data of the signal, or to simultaneously control the first signal readout device and the second signal readout device to acquire position information by acquiring the charge of the signal and time information by acquiring the waveform data of the signal, respectively. In other words, it is possible to select only position information, only time information, or both position information and time information.

[0054] According to the photoelectric detection array anode provided by the embodiments of the present disclosure, a position detection layer including a plurality of metal strips arranged in parallel, the ends of which are respectively connected to a first signal reading device, and a time detection layer including a plurality of metal wires arranged in parallel, the ends of which are respectively connected to a second signal reading device, are provided. By connecting the ends of each metal strip with dedicated electronics and connecting the ends of each metal wire with composite electronics, it is possible to simultaneously read out position information and time information, thereby improving the accuracy of position resolution, controlling the time readout cost, and saving electronic channels and costs.

[0055] Figure 2 FIG1 is a schematic diagram of an anode structure of another multi-anode photomultiplier tube according to an exemplary embodiment. Figure 2 and Figure 1 similar, Figure 2 The photodetection anode shown may also include a position detection layer 102 and a time detection layer 204 . The position detection layer 102 includes a plurality of metal strips 1022 , and the time detection layer 204 includes a plurality of metal wires 2042 .

[0056] Reference Figure 2 , Figure 2 and Figure 1 The difference is that the multiple metal strips 1022 and the multiple metal wires 2042 are arranged in the same direction, and the multiple metal wires 2042 can be set above the gap between every two adjacent metal strips 1022. Similarly, the end 10222 of each metal strip 1022 in the multiple metal strips 1022 is respectively connected to the first signal reading device (not shown in the figure) through the interface 106, and the end 20422 of each metal wire 2042 in the multiple metal wires 2042 is respectively connected to the second signal reading device (not shown in the figure) through the interface 208. For specific implementation, please refer to Figure 1 , I will not go into details here.

[0057] Figure 3 FIG1 is a schematic diagram of an anode structure of another multi-anode photomultiplier tube according to an exemplary embodiment. Figure 3 and Figure 1 similar, Figure 3The photodetection anode shown may also include a position detection layer 302 and a time detection layer 104 , wherein the time detection layer 104 includes a plurality of metal wires 1042 .

[0058] Reference Figure 3 , Figure 3 and Figure 1 The difference is that the position detection layer 302 includes a plurality of first metal strips 3022 and a plurality of second metal strips 3024. The width of the first metal strips 3022 is greater than the width of the second metal strips 3024. The plurality of first metal strips 3022 and the plurality of second metal strips 3024 are arranged at intervals. The ends 30222 of the plurality of first metal strips 3022 are respectively connected to the first signal reading device (not shown in the figure) through the first interface 3062. The ends 30242 of the plurality of second metal strips 3024 are also respectively connected to the first signal reading device through the first interface 3062. The specific implementation of the metal wire 1042 interface can be referred to. Figure 1 , I will not go into details here.

[0059] Figure 4 FIG. 1 is a schematic diagram of an array anode structure of another multi-anode photomultiplier tube according to an exemplary embodiment. Figure 4 As shown, similar Figure 2 , Figure 4 The photodetection anode shown may also include a position detection layer 402 and a time detection layer 204 , where the time detection layer 204 includes a plurality of metal wires 2042 .

[0060] Reference Figure 2 , Figure 4 and Figure 2 The difference is that the multiple metal strips 402 include two layers of two-dimensional metal strips 4022 arranged in an alternating direction. Using the two-dimensional metal strips 402 for readout and the metal wires 2042 for time readout, the structure may include two layers, wherein the bottom layer is a two-dimensional metal strip 402 readout structure, for example, it may include two layers of metal strips arranged in a mesh, and each metal strip 402 is connected at both ends 40222 by dedicated electronics for obtaining position information through collected electronics. On the mesh structure for position information reading, multiple metal wires 2042 are arranged in parallel on the top layer. These metal wires are anode wires (silk) for single-end readout to obtain time information. While improving the accuracy of position resolution, the cost of electronics for obtaining time information can be controlled.

[0061] In some embodiments, the two-dimensional metal strips 402 are arranged in a mesh pattern. The strips are not densely packed, so that both layers of staggered metal strips 402 can collect electrons. The collection efficiency can be improved by adjusting the width of the micro-strips.

[0062] The photodetection array anode provided by the disclosed embodiments utilizes a two-dimensional mesh-structured position strip arrangement, which reduces the electronic readout of the anode charge signal and improves position resolution, reaching micrometers in both dimensions. Furthermore, by reading the time information of the anode wire, both position and time information can be acquired simultaneously. This also reduces detector thickness, enables splicing, and reduces dead zones.

[0063] When designing a multi-anode FPMT structure, its characteristic impedance must be calculated. This calculation and design require consideration of numerous factors. The interface design must consider appropriate dimensions and a reasonable frequency range for the connector to meet fast rise time requirements. In theory, a wider frequency range is preferred, and high bandwidth also translates to a faster rise time (the two are inversely proportional). However, higher bandwidth increases crosstalk between multiple anode signals, directly impacting FPMT signal quality. During design, the relationship between crosstalk and signal bandwidth must be comprehensively considered to optimize the performance while maintaining signal integrity.

[0064] Figures 1 to 4 The square overall frame of the anode is only an example. Figure 5 FIG. 1 is a schematic diagram of an array anode structure of another multi-anode photomultiplier tube according to an exemplary embodiment. Figure 5 As shown, Figure 5 and Figure 1 The only difference is that Figure 5 The overall frame of the anode is circular, and the structure shown by the mark has the same meaning as Figure 1 same. Figures 1 to 4 The shape of the overall frame of the anode can be designed into various shapes according to actual needs, and the present disclosure is not limited thereto.

[0065] Figure 6 FIG. 1 is a schematic structural diagram of a large-area multi-anode photomultiplier tube according to an exemplary embodiment. Figure 6 As shown, the multi-anode photomultiplier tube may include an incident window 602 , a photocathode 604 , a microchannel structure 606 , a photodetection anode 608 , and a vacuum container 610 .

[0066] The incident window 602 can be used to transmit the photons to be detected;

[0067] The photocathode 604 may be configured to convert photons incident through the incident window into photoelectrons through a photoelectric effect and emit the photoelectrons.

[0068] The microchannel structure 606 can be used to multiply the photoelectrons emitted from the photocathode and emit an amplified electron flow.

[0069] The photodetection anode 608 can be used to detect the electron flow emitted from the microchannel structure. Figures 1 to 5An anode structure is shown.

[0070] A vacuum container 610 is provided to accommodate the photocathode 604 , the microchannel structure 606 and the photodetection anode 608 , and the incident window 602 is provided on the vacuum container.

[0071] While the exemplary embodiments of the present disclosure have been specifically illustrated and described above, it should be understood that the present disclosure is not limited to the detailed structures, configurations, or implementations described herein; rather, the present disclosure is intended to encompass various modifications and equivalent configurations within the spirit and scope of the appended claims.

Claims

1. A photoelectric detection anode, characterized in that: It includes the location detection layer and the time detection layer, where: The position detection layer includes at least one metal strip, the end of which is connected to a first signal reading device for acquiring position information through the charge of the collected signal; The time detection layer includes at least one metal wire, the end of which is connected to a second signal reading device for acquiring time information by collecting waveform data of the signal, wherein the time detection layer and the position detection layer are two layers with relative positions.

2. The photodetection anode according to claim 1, characterized in that: The position detection layer includes a plurality of metal strips, which are arranged in parallel, and ends of each of the plurality of metal strips are respectively connected to the first signal readout device.

3. The photodetection anode according to claim 2, characterized in that: The plurality of metal strips are two-dimensional metal strips arranged in two layers in an alternating manner.

4. The photodetection anode according to claim 3, characterized in that: The two-dimensional metal strips are arranged in a mesh structure.

5. The photodetection anode according to claim 2, characterized in that: Two ends of each of the plurality of metal strips are respectively connected to the first signal reading device.

6. The photodetection anode according to claim 2, characterized in that: The plurality of metal strips include a plurality of first metal strips and a plurality of second metal strips. The width of the first metal strips is greater than the width of the second metal strips. The plurality of first metal strips and the plurality of second metal strips are arranged at intervals.

7. The photodetection anode according to claim 1, characterized in that: The metal strips and the metal wires are arranged in the same direction; or the metal strips and the metal wires are arranged in alternating directions.

8. The photodetection anode according to claim 1, characterized in that: The time detection layer includes a plurality of metal wires, and one end of each of the plurality of metal wires is connected to the second signal readout device respectively.

9. The photodetection anode according to claim 1, characterized in that: It also includes a control device for controlling only the first signal reading device to obtain position information by collecting the charge of the signal, or only controlling the second signal reading device to obtain time information by collecting the waveform data of the signal, or simultaneously controlling the first signal reading device and the second signal reading device to obtain position information by collecting the charge of the signal and to obtain time information by collecting the waveform data of the signal respectively.

10. A multi-anode photomultiplier tube, characterized in that: include: An incident window, used to transmit the photons to be detected; a photocathode, for converting photons incident through the incident window into photoelectrons through a photoelectric effect and emitting the photoelectrons; A microchannel structure for multiplying the photoelectrons emitted by the photocathode to emit an amplified electron flow; The photodetection anode according to any one of claims 1 to 6, used to detect the electron flow emitted from the microchannel structure; and A vacuum container is provided for accommodating the photocathode, the microchannel structure and the photodetection anode, wherein the incident window is provided on the vacuum container.

11. The multi-anode photomultiplier tube according to claim 10, characterized in that: The distance between the position of the time detection layer and the micro-channel structure is smaller than the distance between the position detection layer and the micro-channel structure.

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