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Study on temperature response of the HERD calorimeter cell

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Radiation Detection Technology and Methods 2023年第2期7卷 227-233页

作者： Yingying Dai Xingzhu Cui Xin Liu yongwei dong Hongwei Liang Zhenzhong Zhang Xiaochuan Xia Zhipeng Wei State Key Laboratory of High Power Semiconductor Lasers Changchun University of Science and TechnologyChangchun130022China Institute of High Energy Physics Chinese Academy of Sciences(CAS)Beijing100049China School of Microelectronics Dalian University of TechnologyDalian116024China

Purpose To derive the temperature response of the basic unit of the electromagnetic calorimeter of the high energy cosmic-radiation detection(HERD)*** Tested a method to measure HERD calorimeter cell(HCC)light yield using an ultraviolet Light-Emitting Diode with a wavelength of 300 nm,and established an experimental setup and tested the light yield of the HCC at different temperatures in a thermal *** and conclusions The result showed that the signal amplitudes variation of the HCC reached up to 10.2% with temperature ranging from 0 to 60℃,if we narrow the temperature range to 0-35℃,the variation was about 3.7% and it showed much better *** result provides a good instruction on the thermal control of the HERD calorimeter(CALO)to improve its performance.

关键词： HERD LYSO WLSF Optical output Temperature response

Test system designed for WLSF pads of HERD calorimeter cell

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Radiation Detection Technology and Methods 2024年第3期8卷 1366-1376页

作者： Wenjie Duan Xingzhu Cui Xin Liu Sen Guo Bing Lu yongwei dong Jilong Tang Zhipeng Wei Qun Hao State Key Laboratory of High Power Semiconductor Lasers Changchun University of Science and TechnologyChangchun130022China Institute of High Energy Physics Chinese Academy of Sciences(CAS)Beijing100049China Zhongshan Institute of Changchun University of Science and Technology Zhongshan528437China

Purpose In order to avoiding the potential radiation harm caused by X-ray tube to the crew,and meeting the testing requirements for WLSF pad of Calorimeter Cell in the High Energy cosmic-Radiation Detection facility(HERD).Method Designed a testing system,which is composed by LED,LYSO crystal,and narrow bandpass *** stability of the testing system is validated by conducting long-term measurements of signal amplitudes using a PMT waveform sampling *** and conclusions The result showed that the deviation levels of the WLSF Pad’s light output test results are all less than 5%.The linear relationship between the results of testing system and the results obtained with the cosmic ray test has demonstrated the effectiveness of the testing system,which promises the further application in large-scale WLSF pads performance testing.

关键词： HERD LYSO WLSF Optical output

Silicon PIN array-based charge measurement detector for HERD beam test

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Radiation Detection Technology and Methods 2024年第3期8卷 1480-1485页

作者： Ke Gong Rui Qiao Wenxi Peng Bin Lu Yaqing Liu dongya Guo Ruosi Lu Xuan Liu Zhen Zhang Jiahe Zhang Tianwei Bao yongwei dong Institute of High Energy Physics CAS19B Yuquan RdShijingshan DistrictBeijing100049China University of Chinese Academy of Sciences No.1 Yanqihu East RdHuairou DistrictBeijing101408China North China University of Technology No.5 Jinyuanzhuang RoadShijingshan DistrictBeijing100144China

Purpose The high-energy cosmic radiation detection(HERD)is a dedicated space cosmic ray detector,planned to be launched and installed on the China Space Station(CSS)around *** of the main goals of HERD is to measure the composition and energy spectra of cosmic rays(CR)with energies as high as several PeV by using silicon charge detectors(SCD)(Altomare et *** The silicon charge detector of the high energy cosmic radiation detection facility,2023),plastic scintillator detectors(PSD)(Kyratzis et *** Proceedings of Sc.(ICRC2021),vol.651,2021),and 3D calorimeters(CALO)(Liu et *** J Instrum 18(09):09002,2023).To assess HERD’s charge measurement capability during the beam test,a particle identification detector(PID)with a large dynamic range is *** A Si-PIN-based PID detector is conceptualized and *** is composed of four layers,each containing 30 Si-PIN *** four IDE1160 ASICs,the signals from the Si-PIN arrays are preamplified,shaped,peak-held,and serially read out by four IDE1160 ASICs.A DAQ system is created to digitize the analog signals from ASICs,organize the data package,and transfer it to the host *** and conclusion Before going to the beam test,the dynamic range,linearity,pedestal,and noise level of each channel in PID were studied at *** dynamic range is 0 to+5 pC,the linearity is better than 2%,and the RMSE(Root Mean Square Error)of the pedestal is about 1 *** preliminary beam test results show that PID is capable of detecting heavy ions from(Be)to(Ga),and the charge resolution is better than 0.3 charge units(c.u.).

关键词： Cosmic ray PID HERD Charge measurement

Light collection of the POLAR detector

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Science China(Physics,Mechanics & Astronomy) 2010年第S1期53卷 43-46页

作者： dong yongwei,LI YanGuo,WU BoBing,ZHANG YongJie & ZHANG ShuangNan Key Laboratory of Particle Astrophysics,Institute of High Energy Physics,Chinese Academy of Sciences,Beijing 100049,China 1. Key Laboratory of Particle Astrophysics Institute of High Energy Physics Chinese Academy of Sciences Beijing 100049 China

POLAR is a compact polarimeter dedicated to measuring the polarization of GRBs between 50-350 *** light collection of 200 mm×6 mm×6 mm plastic bars has been simulated and optimized in order to get uniform response to X-rays at different points along one single *** to the Monte Carlo results,the amplitude uniformity strongly depends on the level of polishing of the scintillator surface and the covering.A uniformity of 89% is achieved with a prototype constructed by a non position-sensitive PMT and an array of 4×4 bars.

关键词： plastic scintillator light collection gamma-ray burst polarimeter

SVOM gamma ray monitor

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Science China(Physics,Mechanics & Astronomy) 2010年第S1期53卷 40-42页

作者： dong yongwei,WU BoBing,LI YanGuo,ZHANG YongJie & ZHANG ShuangNan Key Laboratory of Particle Astrophysics,Institute of High Energy Physics,Chinese Academy of Sciences,Beijing 100049,China 1. Key Laboratory of Particle Astrophysics Institute of High Energy Physics Chinese Academy of Sciences Beijing 100049 China

The space-based multi-band astronomical Variable Object Monitor(SVOM) mission is dedicated to the detection,localization and broad-band study of gamma-ray bursts(GRBs) and other high-energy transient *** gamma ray monitor(GRM) onboard is designed to observe GRBs up to 5 *** this instrument,one of the key GRB parameters,Epeak,can be easily measured in the hard X-ray *** can achieve a detection rate of 100 GRBs per year which ensures the scientific output of SVOM.

关键词： gamma-ray burst Epeak triple phoswich

Study of linearity of LYSO crystal for the high energy cosmic radiation detection(HERD)facility

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Radiation Detection Technology and Methods 2017年第1期1卷 21-28页

作者： Zheng Quan Zhigang Wang Ming Xu yongwei dong Junjing Wang Guangpeng An Xin Liu Tianwei Bao Li Zhang RuijieWang Junguang Lv Bobing Wu Shuangnan Zhang Key Laboratory of Particle Astrophysics Institute of High Energy PhysicsCASBeijing 100049China University of Chinese Academy of Sciences Beijing 100049China State Key Laboratory of Particle Detection and Electronics Institute of High Energy PhysicsCASBeijing 100049China

The high energy cosmic-radiation detection(HERD)facility is a space mission designed for detecting cosmic ray(CR)electrons,γ-rays up to tens of TeV and CR nuclei from proton to iron up to several *** main instrument of HERD is a 3-D imaging calorimeter(CALO)composed of nearly ten thousand lutetium yttrium orthosilicate(LYSO,with cerium doping)crystal cubes.A large dynamic range of single HERD CALO Cell(HCC)is necessary to achieve HERD’s PeV observation objectives,which means that the response of HCC should maintain a good linearity from minimum ionizing particle(MIP)calibration to PeV shower *** order to study the linearity ofHCC over such a large energy range,a beam test has been implemented at the E2 and E3 beam lines of *** intensity pulsed electron beam provided by E2 line is used for producing high energy density within HCC;π^(+)/proton provided by E3 line are used *** results showthat no saturation effect occurs and the linearity ofHCCis better than 10%from 30 MeV(1MIP)to 1.1×10^(3) TeV(energy density is 93 TeV/cm^(3)),which can meet the requirement mentioned above.

关键词： HERD Calorimeter LYSO Linearity Beam test

Side-On transition radiation detector(TRD)based on THGEM

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Radiation Detection Technology and Methods 2020年第3期4卷 257-262页

作者： Xiwen Liu Bo Huang Huanbo Feng Hongbang Liu Wenjin Xie Xuefeng Huang Shuai Chen Jianyu Gu Xiaochuan Xie Jin Zhang Qian Liu Yongbo Huang yongwei dong Ming Xu Enwei Liang Guangxi Key Laboratory for Relativistic Astrophysics School of Physical Science and TechnologyGuangxi UniversityNanningChina University of Chinese Academy of Sciences BeijingChina The Institute of High Energy Physics of the Chinese Academy of Sciences BeijingChina

Purpose The characteristic that TR energy is proportional to the Lorentz factor provides a way for energy *** High Energy cosmic-Radiation Detection calorimeter can be calibrated in space by the TRD in the *** In order to make the TR signal stand out from the energy loss signal,a new prototype of TRD called Side-On TRD with THGEM has been ***-on TRD uses side window incidence and strip readout to reduce the ionization energy registered in the channel where the TR photons are located,which is supposed to improve the detection efficiency of *** and conclusion The Side-On TRD has been tested at CERN SPS and found the experimental results are significant.

关键词： Transition radiation detector THGEM Test beam experiment Radiator

一种基于概率图模型的多时相SAR相干变化检测方法

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电子与信息学报 2017年第12期39卷 2912-2920页

作者：冀广宇董勇伟李焱磊梁兴东中国科学院电子学研究所微波成像技术重点实验室北京100190 中国科学院大学北京100049

相干变化检测(CCD)利用重轨SAR数据对场景中表现为低相干特性的变化区域具有良好的检测性能,然而场景中诸如植被、阴影、强散射旁瓣、低散射等区域也呈现低相干特性,对检测结果造成干扰,尤其在高波段SAR CCD中,对检测效果影响更加明显... 详细信息

相干变化检测(CCD)利用重轨SAR数据对场景中表现为低相干特性的变化区域具有良好的检测性能,然而场景中诸如植被、阴影、强散射旁瓣、低散射等区域也呈现低相干特性,对检测结果造成干扰,尤其在高波段SAR CCD中,对检测效果影响更加明显。该文利用多时相SAR数据形成的相干变化差异图像(CCD图像)建立概率图模型,提出一种多时相CCD处理方法。该方法以多时相CCD图像作为观测量,通过选取合适的参与处理图像数量及优化场景中变化区域的分类,计算目标变化区域的后验概率,可有效减小低相干干扰区域造成的影响。仿真和实测数据结果验证了该方法的正确性和有效性。

关键词：重轨合成孔径雷达相干变化检测多时相概率图模型后验概率

基于体散射约束的极化SAR相干变化检测方法

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电子与信息学报 2018年第10期40卷 2461-2469页

作者：冀广宇梁兴东董勇伟李焱磊中国科学院电子学研究所微波成像技术重点实验室北京100190 中国科学院大学北京100049

相干变化检测(CCD)利用场景中变化区域的失相干特性进行检测,而场景中存在的体散射植被区域及低信噪比区域也呈现低相干特性,对待检测变化区域形成干扰。该文提出一种极化SAR CCD方法,首先利用变化前后SAR图像间的极化相干信息建立加权... 详细信息

相干变化检测(CCD)利用场景中变化区域的失相干特性进行检测,而场景中存在的体散射植被区域及低信噪比区域也呈现低相干特性,对待检测变化区域形成干扰。该文提出一种极化SAR CCD方法,首先利用变化前后SAR图像间的极化相干信息建立加权迹相干统计量,然后利用各个SAR图像内极化通道间的相干信息,通过建立混合GEV分布模型,采用改进EM算法求解各分量参数,建立体散射约束项,最后结合散射功率变化约束项构建极化CCD检验统计量。该方法可在不影响检测性能情况下排除干扰。该文采用变化前后的两幅L波段全极化SAR图像进行方法验证,实验结果及指标参数验证了该方法的正确性与有效性。

关键词：极化合成孔径雷达相干变化检测极化相干信息体散射 EM算法