Muon scintillator detection assembly based on coupling of optical fiber and plastic scintillator

Abstract

The invention discloses a muon scintillator detection assembly based on coupling of an optical fiber and a plastic scintillator, and relates to the technical field of high-energy particle detection or nuclear radiation detection, in particular to the muon scintillator detection assembly based on coupling of the optical fiber and the plastic scintillator. The muon scintillator detection assembly comprises a plastic scintillation fiber coupling module, a photoelectric conversion amplification module, a power supply module and a signal acquisition module. According to the muon scintillator detection assembly based on coupling of the optical fiber and the plastic scintillator, through cooperation of the plastic scintillator optical fiber coupling module, the photoelectric conversion amplification module, the power supply module and the signal acquisition module, the plastic scintillator and the optical fiber are coupled to form a photon detection assembly, so that muons and the plastic scintillator interact to make the plastic scintillator emit light; light is transmitted in the plastic scintillator, light signals are collected through the optical fiber, and the light leakage phenomenon of the scintillator is effectively avoided by adopting an optical fiber scintillator coupling light collection mode.

Description

Technical Field

[0001] The invention relates to the technical field of high-energy particle detection or nuclear radiation detection, and in particular to a muon scintillator detection component based on coupling of optical fiber and plastic scintillator. Background Art

[0002] In high-energy particle detection or nuclear radiation detection, there are many types of particles to detect, and the types of detectors used are also more complex. At the same time, considering the need to measure important parameters such as energy, momentum, angular distribution, etc. of different particles, the types and principles of applicable detectors will vary greatly. For high-energy charged particles in nature - muons, special considerations and research are generally required. Plastic scintillators are generally used for natural high-energy muon detection. The main reason is that plastic scintillators have strong environmental adaptability and can withstand more complex field experimental environments.

[0003] However, the traditional muon detection technology based on plastic scintillators mainly utilizes the coupling of plastic scintillators and silicon photomultipliers (SiPMs) to convert the collected optical signals into electrical signals. In this scheme, the plastic scintillator and SiPM are mechanically coupled, and this coupling method has the disadvantage of relatively low efficiency for the collection of optical signals. The main reasons are that plastic scintillators can cause considerable light leakage due to poor light shielding; light propagating in plastic scintillators will be greatly attenuated; the ratio of the plastic scintillator port area to the SiPM effective area is not 1:1, which causes light leakage.

[0004] In summary, the current muon detector assembly technology based on the mechanical coupling of plastic scintillator and SiPM has great drawbacks in high-precision detection, so a new type of muon detector assembly technology is needed to fill this vacuum area. Summary of the invention

[0005] The present invention provides a muon scintillator detection assembly based on coupling of optical fiber and plastic scintillator, which solves the problems raised by the above-mentioned background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a muon scintillator detection component based on optical fiber and plastic scintillator coupling, the muon scintillator detection component includes a plastic scintillator optical fiber coupling module, a photoelectric conversion and amplification module, a power supply module and a signal acquisition module; The plastic scintillator optical fiber coupling module comprises a plastic scintillator and an optical fiber, and the plastic scintillator and the optical fiber are coupled; The photoelectric conversion and amplification module includes an electronic circuit for photoelectric conversion and a signal amplification component; The power module includes a component for providing power to the entire electronic circuit; The signal acquisition module includes a computer component for data acquisition, recording and storage.

[0007] Optionally, muons generate optical signals when passing through the plastic scintillator, and the optical signals are transmitted through the optical fiber by coupling with the optical fiber.

[0008] Optionally, the optical signal in the optical fiber is converted into an electrical signal by a photoelectric conversion device.

[0009] Optionally, the electrical signal is amplified by an electronic circuit and processed by a signal amplification component and then collected by a computer component.

[0010] The present invention has the following beneficial effects: 1. The muon scintillator detection component based on the coupling of optical fiber and plastic scintillator, through the cooperation between the plastic scintillator optical fiber coupling module, the photoelectric conversion and amplification module, the power module and the signal acquisition module, utilizes the coupling of plastic scintillator and optical fiber to form a photon detection component, so that the muon interacts with the plastic scintillator to make it emit light, and the light propagates in the plastic scintillator and the optical fiber collects the optical signal. The optical fiber scintillator coupling light collection method is adopted to effectively avoid the light leakage of the scintillator, so that the light collection efficiency is significantly improved compared with the scintillator silicon photomultiplier tube coupling.

[0011] 2. The muon scintillator detection component based on the coupling of optical fiber and plastic scintillator, through the cooperation between the photoelectric conversion amplification module, the power module and the signal acquisition module, uses the electronic circuit and signal amplification component of photoelectric conversion, and converts the optical signal collected by the optical fiber into an electrical signal through the photoelectric conversion device, so that the photoelectric conversion will no longer pass through the silicon photomultiplier tube, thereby saving the corresponding cost and reducing the cost price of the entire system. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a working diagram of each module of the muon scintillator detection assembly of the present invention; Figure 2 It is a schematic diagram of the muon scintillator detection assembly in the structure of the present invention.

[0013] In the figure: 101, plastic scintillator; 102, optical fiber; 2, electronic circuit; 3, computer component. DETAILED DESCRIPTION

[0014] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0015] See also Figure 1 and Figure 2 , the present invention provides a technical solution: a muon scintillator detection component based on optical fiber and plastic scintillator coupling, the muon scintillator detection component includes a plastic scintillator optical fiber coupling module, a photoelectric conversion and amplification module, a power supply module and a signal acquisition module; The plastic scintillator fiber coupling module includes a plastic scintillator 101 and an optical fiber 102, and the plastic scintillator 101 and the optical fiber 102 are coupled, and the plastic scintillator 101 emits light through the interaction between muons and the plastic scintillator 101, and the light is collected by the optical fiber 102 and then transmitted in the optical fiber 102, thereby achieving a photoelectric conversion device. In order to reduce the loss of light emission, a reflective film needs to be coated around the plastic scintillator 101 and wrapped with aluminum foil; The photoelectric conversion and amplification module includes an electronic circuit 2 for photoelectric conversion and a signal amplification component, which converts the optical signal in the optical fiber 102 into an electrical signal in the electronic circuit 2, and then transmits it to the computer terminal to record the collected data; The power module includes components for providing power to the entire electronic circuit; The signal acquisition module includes a computer component 3 for data acquisition, recording and storage, records and analyzes data, and can achieve online noise signal truncation.

[0016] The muons generate optical signals through the plastic scintillator 101 , and the optical signals are transmitted through the optical fiber 102 by coupling with the optical fiber 102 .

[0017] The optical signal in the optical fiber 102 is converted into an electrical signal by a photoelectric conversion device.

[0018] The electrical signal is amplified by the electronic circuit 2 and processed by the signal amplification component and then collected by the computer component 3 .

[0019] In summary, in the muon scintillator detection component based on the coupling of optical fiber and plastic scintillator, when in use, the muon interacts with the plastic scintillator 101 to make it emit light, and the light propagates in the plastic scintillator 101 and collects the optical signal through the optical fiber 102. The optical signal collected by the optical fiber 102 is converted into an electrical signal through a photoelectric conversion device, and the signal is amplified by a method circuit. During this period, a power module is used to supply power, and the electrical signal of the method is collected and recorded as a muon signal for offline data processing and analysis. The data acquisition system includes an FPGA data acquisition main board and four comparison boards. The signal generated by the plastic scintillator 101 is converted from an optical signal to an electrical signal through the SiPM, and then the electrical signal of each layer is summed through the comparison board, and then compared and identified, and then transmitted to a personal computer through Ethernet through the FPGA for subsequent data analysis.

[0020] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention; the terms "first", "second", and "third" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance. In addition, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not expressly listed, or also includes elements inherent to such process, method, article, or apparatus.

[0021] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A muon scintillator detection assembly based on optical fiber and plastic scintillator coupling, characterized in that: The muon scintillator detection assembly includes a plastic scintillator fiber coupling module, a photoelectric conversion amplification module, a power supply module and a signal acquisition module; The plastic scintillator optical fiber coupling module comprises a plastic scintillator (101) and an optical fiber (102), and the plastic scintillator (101) and the optical fiber (102) are coupled; The photoelectric conversion and amplification module comprises an electronic circuit (2) for photoelectric conversion and a signal amplification component; The power module includes a component for providing power to the entire electronic circuit; The signal acquisition module comprises a computer component (3) for data acquisition, recording and storage.

2. A muon scintillator detection assembly based on coupling of optical fiber and plastic scintillator according to claim 1, characterized in that: The muons pass through the plastic scintillator (101) to generate a light signal, and the light signal is transmitted through the optical fiber (102) by coupling with the optical fiber (102).

3. The muon scintillator detection assembly based on coupling of optical fiber and plastic scintillator according to claim 1, characterized in that: The optical signal in the optical fiber (102) is converted into an electrical signal through a photoelectric conversion device.

4. The muon scintillator detection assembly based on optical fiber and plastic scintillator coupling according to claim 3, characterized in that: The electrical signal is amplified by the electronic circuit (2) and processed by the signal amplification component and then collected by the computer component (3).

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