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Nuclear Science and Techniques 2023年第2期34卷 178-189页

作者： Min Li Zhi‑Min Wang Cai‑Mei Liu Pei‑Zhi Lu Guang Luo Yuen‑Keung Hor Jin‑Chang Liu Chang‑Gen Yang Institute of High Energy Physics Chinese Academy of SciencesBeijing 100049China University of Chinese Academy of Sciences Beijing 100049China Sun Yat-sen University Guangzhou 510275China

This study presents the design and performance results for compact plastic scintillator strips using a wavelength shifting fiber(WLS-fiber)readout with dimensions of 0.1 m×0.02 m×2 *** approach was evaluated as a candidate for a cosmic-ray muon detector for the Taishan Antineutrino Observatory(JUNO-TAO).The strips coupled with 3-inch photomultiplier tubes(PMTs)were measured and compared between the single-end and double-end readout ***,a strip using the double-end option coupling with a silicon photomultiplier(SiPM)was further evaluated and compared with the results obtained using *** performance of the strips was determined by a detailed survey along their length with a cosmicray muon after detailed characterization of the 3-inch PMTs and *** proposed design employing a compact plastic scintillator strip with WLS-fiber coupling to a SiPM provides a good choice for cosmic-ray muon veto detectors,particularly when detector dimensions must be limited.

关键词： PMT SiPM plastic scintillator WLS-fiber Muon detection Efficiency

Design optimization of plastic scintillators with wavelength-shifting fibers and silicon photomultiplier readouts in the top veto tracker of the JUNO-TAO experiment

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Nuclear Science and Techniques 2023年第7期34卷 99-112页

作者： Guang Luo Y.K.Hor Pei-Zhi Lu Zhi-Min Wang Ru-Hui Li Min Li Yi-Chen Li Liang Zhan Wei Wang Yue-Huan Wei Yu Chen Xiang Xiao Feng-Peng An School of Physics Sun Yat-sen UniversityGuangzhou 510275China Institute of High Energy Physics Beijing 100049Chin a 3 University of Chinese Academy of Sciences Beijing 100049China Sino-French Institute of Nuclear Engineering and Technology Sun Yat-sen UniversityZhuhai 519082China

plastic scintillators(PSs)embedded with wavelength-shifting fibers are widely used in high-energy particle physics,such as in muon taggers,as well as in medical physics and other *** this study,a simulation package was built to evaluate the effects of the diameter and layout of optical fibers on the light yield with different *** optimal optical configuration was designed based on simulations and validated using two PS prototypes under certain experimental condi-tions.A top veto tracker(TVT)for the JUNO-TAO experiment,comprising four layers of 160 strips of PS,was designed and *** threshold was evaluated when the muon tagging efficiency of a PS strip was>99%.The efficiency of three layer out of four layer of TVT is>99%,even with a tagging efficiency of a single strip as low as 97%,using a threshold of 10 photoelectrons and assuming a 40%silicon PM photon detection efficiency.

关键词： plastic scintillator WLS fiber Light yield Optical transmission performance Muon tagging efficiency JUNO-TAO

Design and preliminary test of tritiated water online detector system based on plastic scintillators

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Nuclear Science and Techniques 2022年第10期33卷 68-78页

作者： Chun-Hui Dong Kai-Yong Liao Rui-Yang Xu Hong-Wu Liu Qing-Xian Zhang Chengdu University of Technology Chengdu 610059China

In this study,an online detector system based on plastic scintillators is designed to monitor the activity of tritiated water in the liquid effluents of nuclear power *** feasibility of the detector is verified via simulation on Geant4,and the optimal detector structure size is determined.A back-end electronics system is designed and an experimental measurement platform forβ-rays based on a ^(40)KCl solution is *** ^(40)KC solutions with different activities ranging from 10 to4500 Bq/L are measured,and 1300 V is determined as the optimal operating high voltage of the photomultiplier tubes.A linear fit is performed in 10-min counts,and the maximum linear goodness of fit(R^(2))achieved is ***-term stability measurements are performed for two detectors,one filled with air and the other with a ^(40)KCl solution exhibiting an activity of 2000 Bq/*** relative deviation of the counts of the detector system every 10 min is 0.998%when the ^(40)KCl solution is used,and the maximum Gaussian R^(2) of the counts is 0.9849.

关键词： Tritiated water Geant4 plastic scintillator Electronics system

Studies of detector cells for a hadronic calorimeter based on plastic scintillators

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Radiation Detection Technology and Methods 2018年第1期2卷 151-156页

作者： Zhe Wu Dongmei Xia Zhigang Wang Hang Zhao Peng Hu Wei Hu Tao Hu Jiechen Jiang Boxiang Yu College of Power Engineering Chongqing UniversityChongqing 400044China State Key Laboratory of Particle Detection and Electronics Beijing 100049China Institute of High Energy Physics Chinese Academy of SciencesBeijing 100049China University of Chinese Academy of Sciences Beijing 100049China

In this paper,we study variations of a plastic scintillator tile coupled to silicon photomultiplier via a dome-shaped cavity originally developed in the CALICE *** kinds of plastic scintillator detector cells with different sizes based on the structure were studied for applications in analog readout highly granular hadronic calorimeter(AHCAL)in future circular electron positron collider(CEPC)*** responses to cosmic rays of the detector cells could reach 33.89 p.e./MIPs(minimum ionizing particles).The good results of both response uniformity and MIP detection efficiency(above 95%)show that the detector cells with larger sizes(40×40×3 and 50×50×3 mm^(3))could provide an option for AHCAL detector cells of CEPC detectors.

关键词： CEPC AHCAL plastic scintillator Cosmic-ray test Response uniformity

A scintillator detector for beam tuning of low-energy single electron accelerator

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Radiation Detection Technology and Methods 2017年第1期1卷 29-39页

作者： Yu-lan Li Yun-ting Gu Yu-guang Xie Jun-hui Yue Jun-guang Lv Shun-li Niu Shi-lun Pei Feng Shi Ling-da Yu Hang Zhao Wen-qi Yan Pin Lv Zhi-yuan Peng Geng-lan Li Guangxi University Nanning 530004GuangxiChina Institute of High Energy Physics Beijing 100049China State Key Laboratory of Particle Detection and Electronics Beijing 100049China University of Chinese Academy of Sciences Beijing 100049China

Purpose Nine scintillator detectors were developed for beam tuning of low-energy single electron accelerator instead of the picoammeter and Faraday cup,both of which will be insensitive to the weak-current beam lower than *** The detectors are based on plastic scintillator and photomultiplier tube(PMT)and the beam is 100 Hz pulsed electrons in the energy range of 0.1 to *** beam flux was tuned from about 107 to quasi-single electron for each bunch according to the measurement results of these detectors installed along the beam pipe and after *** order to determine the number of electrons in a bunch,the gains of each PMT were finely calibrated,and the energy response of each detector was calibrated with 207Bi radioactive ***,the deposited energy in the plastic scintillator,the electron detection efficiency and light collection efficiency,as a function of electron incident energy,were also simulated in detail by *** Nine detectors worked well at a gain of 0.6×10^(6) after installation in the beam pipe,and the number of electrons in a bunch could be measured at each detector *** single electron peak was seen when the beam reached the final *** The commissioning result shows that the beam was tuned to quasi-single electron level successfully and the scintillator detector is an effective method to measure the weak-current beam lower than picoampere.

关键词： Beam tuning Single electron beam PMT plastic scintillator Slit

Cosmic ray test for a T0 detector

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Chinese Physics C 2011年第10期35卷 946-951页

作者：付在伟钱森宁哲刘曙东陈晓辉衡月昆王贻芳祁鸣杨帅孙勇杰邵明李澄郑阳恒 Department of Physics Nanjing University Institute of High Energy Physics Chinese Academy of Sciences Graduate University of Chinese Academy of Sciences Department of Modern Physics University of Science and Technology of China

The endcap of time-of-flight （ETOF） detector in BES （Beijing Spectrometer） III is planned to be upgraded by using multi-gap resistive plate chambers （MRPCs） and the designed time resolution of the MRPCs is around 50 ps. Thus a time-zero （TO） detector needs to be built to offer a high quality reference time for the MRPCs beam test. So a TO detector is built using plastic scintillator tiles （BC420） to couple with four fast phototubes （PMTs, Hamamatsu H6533）. The timing properties of the detector is studied by using a cosmic ray test and factors related to the time resolution, such as plastic scintillator size, readout mode and angle effects, are discussed. TO detector timing resolutions of -41-62 ps are achieved, which means that the TO detector can be used in the MRPC beam test.

关键词： TO plastic scintillator PMT MRPC ETOF

plastic scintillation detectors for precision Time-of-Flight measurements of relativistic heavy ions

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Chinese Physics C 2017年第6期41卷 128-133页

作者：林文健赵建伟孙保华何鎏春林炜平刘传业谷畑勇夫寺嶋知田怡王枫王萌张广鑫章学恒竺礼华段利敏胡荣江刘忠鲁辰桂任培培盛丽娜孙志宇王世陶王涛峰徐治国郑勇 School of Physics and Nuclear Energy Engineering Beihang University Beijing 100191 China Institute of Modern Physics Chllinese Academy of Sciences Lanzhouu 730000 China

plastic scintillation detectors for Time-of-Flight（TOF） measurements are almost essential for event-byevent identification of relativistic rare isotopes. In this work, a pair of plastic scintillation detectors of dimensions50×50×3^t mm^3and 80×100×3^t mm^3have been set up at the External Target Facility（ETF）, Institute of Modern Physics（IMP）. Their time, energy and position responses are measured with the^（18）O primary beam at 400 Me V/nucleon. After off-line corrections for walk effect and position, the time resolutions of the two detectors are determined to be 27 ps（σ） and 36 ps（σ）, respectively. Both detectors have nearly the same energy resolution of3.1%（σ） and position resolution of about 3.4 mm（σ）. The detectors have been used successfully in nuclear reaction cross section measurements, and will be be employed for upgrading the RIBLL2 beam line at IMP as well as for the high energy branch at HIAF.

关键词： plastic scintillator Time-of-Flight time resolution walk effect correction

Physical design of positronium time of f light spectroscopy apparatus

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Chinese Physics C 2010年第12期34卷 1890-1894页

作者：姜小盼张子良秦秀波于润升王宝义 Key Laboratory of Nuclear Analysis Techniques Institute of High Energy Physics CAS Graduate University of Chinese Academy of Sciences College of Applied Nuclear Technology & Automation Engineering Chengdu University of Technology

Positronium time of flight spectroscopy（Ps-TOF）is an effective technique for porous material *** has advantages over other techniques for analyzing the porosity and pore tortuosity of *** paper describes a design for Ps-TOF apparatus based on the Beijing intense slow positron beam,supplying a new material characterization *** order to improve the time resolution and increase the count rate of the apparatus,the detector system is *** 3 eV o-Ps,the time broadening is 7.66 ns and the count rate is 3 cps after correction.

关键词： positronium time of flight spectroscopy (Ps-TOF) positron annihilation plastic scintillator timebroadening count rate

A high-position-resolution trajectory detector system for cosmic ray muon tomography:Monte Carlo simulation

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Radiation Detection Technology and Methods 2022年第2期6卷 244-253页

作者： Jiajia Zhai Haohui Tang Xianchao Huang Shuangquan Liu Yingjie Wang Chong Li Xiuzuo Liang Yi Zhang Meichan Feng Zhiming Zhang Long Wei Beijing Engineering Research Center of Radiographic Techniques and Equipment Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China School of Nuclear Science and Technology University of Chinese Academy of SciencesBeijing 100049China

Purpose The research focuses on the related designing and simulating the high-position-resolution trajectory detector system based on cosmic ray muon *** The energy deposition of muon in the detector varies with the length of the ionization *** The simulation of the submillimeter detector system was designed for muon *** optimal position resolution of the detector reached 0.6 *** The entire research process includes the selection of analysis of parameters affecting system design,designing of two high-position-resolution detectors based on plastic scintillators,implementation of different imaging algorithms and image quality assessment based on different imaging *** provides a solution based on high positional resolution plastic scintillator detectors for cosmic ray muon scattering imaging.

关键词： Cosmic ray Muon tomography plastic scintillator Position resolution PoCA MLSD-EM

Geant4 Comparative Study of Affecting Different Parameters on Optical Photons Related to the plastic Scintillation Detector

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Journal of Physical Science and Application 2017年第6期7卷 43-50页

作者： M. Ebrahimi Shohani S. M. Golgoun M. Aminipour A. Shabani A. R. Mazoochi R. Maghsoudi A. Olfateh S. M. Taheri M. R. Davarpanah Pars Isotope Company P. O. Box 14376-63181 Tehran Iran Radiation Application Research School Nuclear Science and Technology Research Institute P.O. Box 11365-3486 Tehran 1ran

In this research, different parameters of plastic scintillator detector were investigated by Geant4 simulation toolkit. These parameters consisted of radius, length and position of PMT as well as surface reflective type and finish options. Furthermore, response time distributions of two organic plastic materials were studied. The results indicated that collecting optical photons has a linear relationship with PMT radius head. Also, the vertical location of PMT has a non-linear relationship with the optical photons collection. However, the collection decreased by increasing PMT length or moving PMT head horizontal position. The response functions of two plastic scintillator materials were in good agreement with experimental published results. Also, Geant4 radiation transport code can simulate incident radiation photon and predict subsequent events to the PMT head very well. The results indicated that BC-404 has faster scintillation properties versus BC-400 organic scintillator materials. Comparison between Geant4 outputs illustrates that the best reflector material and surface finish type for optical photons is ground TiO2.

关键词： Geant4 Monte Carlo Code optical photon collection plastic scintillator reflector material surface finish.