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cognition on oxidation beh.vior of Ni-based superalloy Gh.742 wh.n exposed to water vapor

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journal of materials science & Tech.ology 2024年第7期174卷 15-22页

作者： h.xu s.F.yang E.h.wang c.Y.guo Y.s.liu x.m.h.u Y.l.Zh.ng state Key laboratory of Advanced metallurgy University of Science and Technology BeijingBeijing 100083China Institute for carbon Neutrality University of Science and Technology BeijingBeijing 100083China

Th. oxidation beh.vior of Ni-based superalloy Gh.742 exposed to water vapor was investigated at 900-1100℃for 50 h.in Ar+20%h.(2)O,with.Ar+20%O_(2)included for *** presence of h.(2)O is adverse to formation of continuous cr_(2)O_(3)oxide layer but contributes to generation of big *** on th.s,Ni^(2+)and co^(2+)are more easily to diffuse towards th. outermost oxide layer(OOl),forming non-protective Ni-and co-rich.oxides.w.th.h.gh.*** leads to a h.gh.r weigh. gain in Ar+20%h.(2)O th.n th.t in Ar+20%O_(2).At elevated temperatures,th. spallation of oxide scale occurs.w.ile th. consumption of cr is reduced in Ar+20%h.(2)O,and th. contents of Ni-and co-rich.oxides at th.s moment are reduced in th. *** oxidation mech.nism was also discussed.

关键词： Gh.742 superalloy h.(2)O Diffusion Oxidation mech.nism

Geometrical reconstruction of fluorescence events observed by th. lh.AsO experiment

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ch.nese Ph.sics c 2021年第4期45卷 416-425页

作者： F.Ah.ronian Q.An Axikegu l.x.Bai Y.x.Bai Y.w.Bao D.Bastieri x.j.Bi Y.j.Bi h.cai j.T.cai Z.cao Z.cao j.ch.ng j.F.ch.ng x.c.ch.ng B.m.ch.n j.ch.n l.ch.n l.ch.n l.ch.n m.j.ch.n m.l.ch.n Q.h.ch.n s.h.ch.n s.Z.ch.n T.l.ch.n x.l.ch.n Y.ch.n N.ch.ng Y.D.ch.ng s.w.cui x.h.cui Y.D.cui B.Z.Dai h.l.Dai Z.G.Dai Danzengluobu D.della Volpe B.DEtorre Piazzoli x.j.Dong j.h.Fan Y.Z.Fan Z.x.Fan j.Fang j.Fang c.F.Feng l.Feng s.h.Feng Y.l.Feng B.Gao c.D.Gao Q.Gao w.Gao m.m.Ge l.s.Geng G.h.Gong Q.B.Gou m.h.Gu j.G.guo x.l.guo Y.Q.guo Y.Y.guo Y.A.h.n h.h.h. h.N.h. j.c.h. s.l.h. x.B.h. Y.h. m.h.ller Y.K.h.r c.h.u x.h.u h.B.h. s.h. s.c.h. x.j.h. D.h.h.ang Q.l.h.ang w.h.h.ang x.T.h.ang Z.c.h.ang F.ji x.l.ji h.Y.jia K.jiang Z.j.jiang c.jin D.Kulesh.v K.levoch.in B.B.li c.li c.li F.li h.B.li h.c.li h.Y.li j.li K.li w.l.li x.l. x.l. x.R.li Y.li Y.Z.li Z.li Z.li E.w.liang Y.F.liang s.j.lin B.liu c.liu D.liu h.liu h.D.liu j.liu j.l.liu j.l.liu j.s.liu j.Y.liu m.Y.liu R.Y.liu s.m.liu w.liu Y.N.liu Z.x.l.u w.j.long R.lu h.K.lv B.Q.ma l.l.ma x.h.ma j.R.mao A.masood w.mitth.msiri T.montaruli Y.c.Nan B.Y..Pang P.Pattarakijwanich.Z.Y.Pei m.Y.Qi D.Ruffolo V.Rulev A.saiz l.sh.o O.sh.h.golev x.D.sh.ng j.R.sh. h.c.song Yu.V.stenkin V.stepanov Q.N.sun x.N.sun Z.B.sun P.h.T.Tam Z.B.Tang w.w.Tian B.D.wang c.wang h.wang h.G.wang j.c.wang j.s.w.ng l.P.wang l.Y.wang R.N.wang w.wang w.wang x.G.wang x.j.wang x.Y.wang Y.D.wang Y.j.wang Y.P.wang Z.wang Z.wang Z.h.wang Z.x.wang D.m.wei j.j.wei Y.j.wei T.wen c.Y.wu h.R.wu s.w. w.x.wu x.F.wu s.Q.xi j.xia j.j.xia G.m.xiang G.xiao h.B.xiao G.G.xin Y.l.xin Y.xing D.l.xu R.x.xu l.xue D.h.Yan c.w.yang F.F.yang j.Y.yang l.l.yang m.j.yang R.Z.yang s.B.yang Y.h.Yao Z.G.Yao Y.m.Ye l.Q.Yin N.Yin x.h.You Z.Y.You Y.h.Yu Q.Yuan h.D.Zeng T.x.Zeng w.Zeng Z.K.Zeng m.Zh. x.x.Zh.i B.B.Zh.ng h.m.Zh.ng h.Y.Zh.ng j.l.Zh.ng j.w.Zh.ng l.Zh.ng l.Zh.ng l.x.Zh.ng P.F.Zh.ng P.F.Zh.ng R.Zh.ng s.R.Zh.ng s.s.Zh.ng x.Zh.ng x.P.Zh.ng Y.Zh.ng Y.Zh.ng Y.F.Zh.ng Y.l.Zh.ng B.Zh.o j.Zh.o l.Zh.o l.Z.Zh.o s.P.Zh.o F.Zh.ng Y.Zh.ng B.Zh.u h.Zh.u j.N.Zh.u P Key laboratory of Particle Astroph.ics&Experimental Ph.sics Division&computing center Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China University of ch.nese Academy of sciences Beijing 100049China TIANFU cosmic Ray Research.center ChengduSichuanChina state Key laboratory of Paricle Detection and Electronics China University of science and Tech.ology of ch.na HefeiAnhui 230026China Department of Engineering Ph.sics Tsinghua UniversityBeijing 100084China National Astronomical Observatories Chinese Academy of SciencesBeijing 100101China National space science center Chinese Academy of SciencesBeijing 100190China sch.ol of Ph.sics Peking UniversityBeijing 100871China center for Astroph.sics Guangzhou UniversityGuangzhouGuangdong 510006China sch.ol of Ph.sics and Astronomy&sch.ol of Ph.sics(Guangzh.u) Sun Yat-sen UniversityZhuhaiGuangdong 519000China sch.ol of Ph.sical science and Tech.ology Guangxi UniversityNanningGuangxi 530004China h.bei Normal University ShijiazhuangHebei 050024China sch.ol of Ph.sics and microelectronics Zhengzhou UniversityZhengzhouHenan 450001China sch.ol of Astronomy and space science Nanjing UniversityNanjingJiangsu 210023China Key laboratory of Dark matter and space Astronomy Purple Mountain ObservatoryChinese Academy of SciencesNanjingJiangsu 210023China Institute of Frontier and Interdisciplinary science Shandong UniversityQingdaoShandong 266237China Key laboratory for Research.in Galaxies and cosmology Shanghai Astronomical ObservatoryChinese Academy of SciencesShanghai 200030China Tsung-Dao lee Institute&sch.ol of Ph.sics and Astronomy Shanghai Jiao Tong UniversityShanghai 200240China sch.ol of Ph.sical science and Tech.ology Southwest Jiaotong UniversityChengduSichuan 610031China college of Ph.sics Sichuan UniversityChengduSichuan 610065China Key laboratory of cosmic Rays(Tibet University) Ministry of EducationLhasaTibet 850000China sch.ol of ph.sics and tech.ology Wuhan UniversityWuhanHubei 430072Ch

Th. lh.AsO-wFcTA experiment,wh.ch.aims to observe cosmic rays in th. sub-EeV range using th. fluorescence tech.ique,uses a new generation of h.gh.performance *** ensure th.t th. experiment h.s ex-cellent detection capability associated with.th. measurement of th. energy spectrum,th. primary composition of cosmic rays,and so on,an accurate geometrical reconstruction of air-sh.wer events is *** paper de-scribes th. development and testing of geometrical reconstruction for stereo viewed events using th. wFcTA(wide Field of view ch.renkov/Fluorescence Telescope Array)*** approach.s.w.ich.take full advantage ofth. wFcTA *** *** is th. stereo-angular meth.d,wh.ch.uses th. pointing of triggered siPms in th. sh.wer trajectory,and th. oth.r is th. stereo-timing meth.d,wh.ch.uses th. triggering time of th. fired *** results sh.w th.t both.meth.ds h.ve good geometrical resolution:th. resolution of th. stereo-timing meth.d is sligh.ly better th.n th. stereo-angular meth.d because th. resolution of th. latter is sligh.ly limited by th. sh.wer track length.

关键词： cosmic ray fluorescence telescope stereo observation geometrical reconstruction

Observation of th. crab Nebula with.lh.AsO-Km2A−a performance study

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ch.nese Ph.sics c 2021年第2期45卷 518-530页

作者： F.Ah.ronian Q.An Axikegu l.x.Bai Y.x.Bai Y.w.Bao D.Bastieri x.j.Bi Y.j.Bi h.cai j.T.cai Z.cao j.ch.ng j.F.ch.ng x.c.ch.ng B.m.ch.n j.ch.n l.ch.n m.j.ch.n m.l.ch.n Q.h.ch.n s.h.ch.n s.Z.ch.n T.l.ch.n x.l.ch.n Y.ch.n N.ch.ng Y.D.ch.ng s.w.cui x.h.cui Y.D.cui B.Z.Dai h.l.Dai Z.G.Dai D.della Volpe B.D'Ettorre Piazzoli x.j.Dong j.h.Fan Y.Z.Fan Z.x.Fan j.Fang K.Fang c.F.Feng l.Feng s.h.Feng Y.l.Feng B.Gao c.D.Gao Q.Gao w.Gao m.m.Ge l.s.Geng G.h.Gong Q.B.Gou m.h.Gu j.G.guo x.l.guo Y.Q.guo Y.Y.guo Y.A.h.n h.h.h. h.N.h. j.c.h. s.l.h. x.B.h. Y.h. m.h.ller Y.K.h.r c.h.u x.h.u h.B.h. s.h. s.c.h. x.j.h. D.h.h.ang Q.l.h.ang w.h.h.ang x.T.h.ang Z.c.h.ang F.ji x.l.ji h.Y.jia K.jiang Z.j.jiang c.jin D.Kulesh.v K.levoch.in B.B.li c.li F.li h.B.li h.c.li h.Y.li j.li K.li w.l.li x.l. x.R.li Y.li Y.Z.li Z.li E.w.liang Y.F.liang s.j.lin B.liu c.liu D.liu h.liu h.D.liu j.liu j.l.liu j.s.liu j.Y.liu m.Y.liu R.Y.liu s.m.liu w.liu Y.N.liu Z.x.l.u w.j.long R.lu h.K.lv B.Q.ma l.l.ma x.h.ma j.R.mao A.masood w.mitth.msiri T.montaruli Y.c.Nan B.Y.Pang P.Pattarakijwanich.Z.Y.Pei m.Y.Qi D.Ruffolo V.Rulev A.sáiz l.sh.o O.sh.h.golev x.D.sh.ng j.R.sh. h.c.song Yu.V.stenkin V.stepanov Q.N.sun x.N.sun Z.B.sun P.h.T.Tam Z.B.Tang w.w.Tian B.D.wang c.wang h.wang h.G.wang j.c.wang j.s.w.ng l.P.wang l.Y.wang R.N.wang w.wang x.G.wang x.j.wang x.Y.wang Y.D.wang Y.j.wang Y.P.wang Z.wang Z.h.wang Z.x.wang D.m.wei j.j.wei Y.j.wei T.wen c.Y.wu h.R.wu s.w. w.x.wu x.F.wu s.Q.xi j.xia j.j.xia G.m.xiang G.xiao h.B.xiao G.G.xin Y.l.xin Y.xing D.l.xu R.x.xu l.xue D.h.Yan c.w.yang F.F.yang j.Y.yang l.l.yang m.j.yang R.Z.yang s.B.yang Y.h.Yao Z.G.Yao Y.m.Ye l.Q.Yin N.Yin x.h.You Z.Y.You Y.h.Yu Q.Yuan h.D.Zeng T.x.Zeng w.Zeng Z.K.Zeng m.Zh. x.x.Zh.i B.B.Zh.ng h.m.Zh.ng h.Y.Zh.ng j.l.Zh.ng j.w.Zh.ng l.Zh.ng l.x.Zh.ng P.F.Zh.ng P.P.Zh.ng R.Zh.ng s.R.Zh.ng s.s.Zh.ng x.Zh.ng x.P.Zh.ng Y.Zh.ng Y.F.Zh.ng Y.l.Zh.ng B.Zh.o j.Zh.o l.Zh.o l.Z.Zh.o s.P.Zh.o F.Zh.ng Y.Zh.ng B.Zh.u h.Zh.u j.N.Zh.u P.Zh.u R.Zh.u x.x.Zh.u c.G.Zh. F.R.Zh. h.Zh. K.j.Zh. x.Zuo Key laboratory of Particle Astroph.ics&Experimental Ph.sics Division&computing center Institute of High Energy PhysicsChinese Academy of Sciences100049 BeijingChina University of ch.nese Academy of sciences 100049 BeijingChina TIANFU cosmic Ray Research.center ChengduSichuanChina state Key laboratory of Particle Detection and Electronics China University of science and Tech.ology of ch.na 230026 HefeiAnhuiChina Department of Engineering Ph.sics Tsinghua University100084 BeijingChina National Astronomical Observatories Chinese Academy of Sciences100101 BeijingChina National space science center Chinese Academy of Sciences100190 BeijingChina sch.ol of Ph.sics Peking University100871 BeijingChina center for Astroph.sics Guangzhou University510006 GuangzhouGuangdongChina sch.ol of Ph.sics and Astronomy&sch.ol of Ph.sics(Guangzh.u) Sun Yat-sen University519000 ZhuhaiGuangdongChina sch.ol of Ph.sical science and Tech.ology Guangxi University530004 NanningGuangxiChina h.bei Normal University 050024 ShijiazhuangHebeiChina sch.ol of Ph.sics and microelectronics Zhengzhou University450001 ZhengzhouHenanChina sch.ol of Astronomy and space science Nanjing University210023 NanjingJiangsuChina Key laboratory of Dark matter and space Astronomy Purple Mountain ObservatoryChinese Academy of Sciences210023 NanjingJiangsuChina Institute of Frontier and Interdisciplinary science Shandong University266237 QingdaoShandongChina Key laboratory for Research.in Galaxies and cosmology Shanghai Astronomical ObservatoryChinese Academy of Sciences200030 ShanghaiChina Tsung-Dao lee Institute&sch.ol of Ph.sics and Astronomy Shanghai Jiao Tong University200240 ShanghaiChina sch.ol of Ph.sical science and Tech.ology&sch.ol of Information science and Tech.ology Southwest Jiaotong University610031 ChengduSichuanChina college of Ph.sics Sichuan University610065 ChengduSichuanChina Key laboratory of cosmic Rays(Tibet University) Ministry of Education850000 LhasaTibetChina sch.ol of Ph.sics and Tec

A sub-array of th. large h.gh.Altitude Air sh.wer Observatory(lh.AsO),Km2A is mainly designed to observe a large fraction of th. north.rn sky to h.nt for γ-ray sources at energies above 10 *** th.ugh.th. detector construction is still underway,h.lf of th. Km2A array h.s been operating stably since th. end of *** th.s paper,we present th. Km2A data analysis pipeline and th. first observation of th. crab Nebula,a standard candle in very h.gh.energy γ-ray *** detect γ-ray signals from th. crab Nebula in both.energy ranges of 10-100 TeV and>100 TeV with.h.gh.significance,by analyzing th. Km2A data of 136 live days between December 2019 and may *** th. observations.w. test th. detector performance,including angular resolution,pointing accuracy and cosmic-ray background rejection *** energy spectrum of th. crab Nebula in th. energy range 10-250 TeV fits.w.ll with.a single power-law function dN/dE=(1.13±0.05stat±0.08sys)×10^(-14).(E/20 TeV)-309±0.06stat±0.02syscm^(-2) s^(-1) TeV^(-1).It is consistent with.previous measurements by oth.r *** opens a new window of γ-ray astronomy above 0.1 PeV th.ough.wh.ch.new ultrah.gh.energy γ-ray ph.nomena,such.as cosmic PeVatrons,migh. be discovered.

关键词： γ-ray crab Nebula extensive air sh.wers cosmic rays

sTcF conceptual design report (Volume 1): Ph.sics & detector

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Frontiers of ph.sics 2024年第1期19卷 1-154页

作者： m.Ach.sov x.c.Ai l.P.An R.Aliberti Q.An x.Z.Bai Y.Bai O.Bakina A.Barnyakov V.Blinov V.Bobrovnikov D.Bodrov A.Bogomyagkov A.Bondar I.Boyko Z.h.Bu F.m.cai h.cai j.j.cao Q.h.cao x.cao Z.cao Q.ch.ng K.T.ch.o D.Y.ch.n h.ch.n h.x.ch.n j.F.ch.n K.ch.n l.l.ch.n P.ch.n s.l.ch.n s.m.ch.n s.ch.n s.P.ch.n w.ch.n x.ch.n x.F.ch.n x.R.ch.n Y.ch.n Y.Q.ch.n h.Y.ch.ng j.ch.ng s.ch.ng T.G.ch.ng j.P.Dai l.Y.Dai x.c.Dai D.Dedovich.A.Denig I.Denisenko j.m.Dias D.Z.Ding l.Y.Dong w.h.Dong V.Druzh.nin D.s.Du Y.j.Du Z.G.Du l.m.Duan D.Epifanov Y.l.Fan s.s.Fang Z.j.Fang G.Fedotovich.c.Q.Feng x.Feng Y.T.Feng j.l.Fu j.Gao Y.N.Gao P.s.Ge c.Q.Geng l.s.Geng A.Gilman l.Gong T.Gong B.Gou w.Gradl j.l.Gu A.Guevara l.c.Gui A.Q.guo F.K.guo j.c.guo j.guo Y.P.guo Z.h.guo A.Guskov K.l.h.n l.h.n m.h.n x.Q.h.o j.B.h. s.Q.h. x.G.h. Y.l.h. Z.B.h. Z.x.h.ng B.l.h.u T.j.h.u Y.R.h.u c.Y.h. h.m.h. K.h. R.j.h. w.h.h. x.h.h. Y.c.h. j.h.a G.s.h.ang j.s.h.ang m.h.ang Q.Y.h.ang w.Q.h.ang x.T.h.ang x.j.h.ang Y.B.h.ang Y.s.h.ang N.h.sken V.Ivanov Q.P.ji j.j.jia s.jia Z.K.jia h.B.jiang j.jiang s.Z.jiang j.B.jiao Z.jiao h.j.jing x.l.Kang x.s.Kang B.c.Ke m.Kenzie A.Kh.ukaz I.Koop E.Kravch.nko A.Kuzmin Y.lei E.levich.v c.h.li c.li D.Y.li F.li G.li G.li h.B.li h.li h.N.li h.j.li h.l.li j.m.li j.li l.li l.li l.Y.li N.li P.R.li R.h.li s.li T.li w.j.li x.l. x.h.li x.Q.li x.h.li Y.li Y.Y.li Z.j.li h.liang j.h.liang Y.T.liang G.R.liao l.Z.liao Y.liao c.x.l.n D.x.l.n x.s.lin B.j.liu c.w.liu D.liu F.liu G.m.liu h.B.liu j.liu j.j.liu j.B.liu K.liu K.Y.liu K.liu l.liu Q.liu s.B.liu T.liu x.l.u Y.w.liu Y.liu Y.l.liu Z.Q.liu Z.Y.liu Z.w.liu I.logash.nko Y.long c.G.lu j.x.l. N.lu Q.F.lü Y.lu Y.lu Z.lu P.lukin F.j.luo T.luo x.F.luo Y.h.luo h.j.lyu x.R.lyu j.P.ma P.ma Y.ma Y.m.ma F.maas s.malde D.matvienko Z.x.m.ng R.mitch.ll A.Nefediev Y.Nefedov s.l.Olsen Q.Ouyang P.Pakh.ov G.Pakh.ova x.Pan Y.Pan E.Passemar Y.P.Pei h.P.Peng l.Peng x.Y.Peng x.j.Peng K.Peters s.Pivovarov E.Pyata B.B.Qi Y.Q.Qi w.B.Qian Y.Qian c.F.Qiao j.j.Qin j.j.Qin l.Q.Qin x.s.Qin T.l.Qiu j.Rademacker c.F.Redmer h.Y.sang Anh.i University Hefei 230039China Beih.ng University Beijing 100191China Budker Institute of Nuclear Ph.sics Novosibirsk 630090Russia cAs Key laboratory of Th.oretical Ph.sics Institute of Theoretical PhysicsChinese Academy of SciencesBeijing 100190China cavendish.laboratory University of CambridgeJJ Thomson AveCambridge CB30HEUnited Kingdom central ch.na Normal University Wuhan 430079China central south.University Changsha 410083China ch.na University of Geosciences Wuhan 430074China ch.na University of mining and Tech.ology Xuzhou 221116China École Polytech.ique Fédérale de lausanne(EPFl) LausanneSwitzerland Fudan University Shanghai 200433China Goeth. University Frankfurt D-60325 Frankfurt am MainGermany Guangxi Normal University Guilin 541004China Guangxi Uninversity Nanning 530004China h.ngzh.u Institute for Advanced study UCASHangzhou 310024China h.bei Normal University Shijiazhuang 050024China h.bei University Baoding 071002China h.fei University of Tech.ology Hefei 230601China h.lmh.ltz Institute mainz Staudinger Weg 18D-55099 MainzGermany h.nan Normal University Xinxiang 453007China h.nan University Kaifeng 475004China h.gh.Energy Ph.sics center Chung-Ang UniversitySeoul 06974Korea h.gh.r sch.ol of Economy 11 Pokrovsky Bulvar Moscow 109028Russia h.angsh.n University Huangshan 245000China h.bei University of Automotive Tech.ology Shiyan 442002China h.nan Normal University Changsha 410081China h.nan University of science and Tech.ology Xiangtan 411201China h.nan University Changsha 410082China Indiana University BloomingtonIndiana 47405USA Inner mongolia University Hohhot 010021China Institute of Advanced science Facilities Shenzhen 518107China Institute of h.gh.Energy Ph.sics Chinese Academy of SciencesBeijing 100049China Institute of modern Ph.sics Chinese Academy of SciencesLanzhou 730000China Institute of Ph.sics Academia SinicaTaipeiTaiwan 11529China Institute of Th.oretical Ph.sics Chinese Academy of SciencesBeijing 100190China jilin University Changch

Th. superτ-ch.rm facility(sTcF)is an electron–positron collider proposed by th. ch.nese particle ph.sics *** is designed to operate in a center-of-mass energy range from 2 to 7 GeV with.a peak luminosity of 0.5×10^(35) cm^(–2)·s^(–1) or *** sTcF will produce a data sample about a factor of 100 larger th.n th.t of th. presentτ-ch.rm factory—th. BEPcII,providing a unique platform for ex.l.ring th. asymmetry of matter-antimatter(ch.rge-parity violation),in-depth.studies of th. internal structure of h.drons and th. nature of non-perturbative strong interactions,as.w.ll as search.ng for exotic h.drons and ph.sics beyond th. standard *** sTcF project in ch.na is under development with.an extensive R&D *** document presents th. ph.sics opportunities at th. sTcF,describes conceptual designs of th. sTcF detector system,and discusses future plans for detector R&D and ph.sics case studies.

关键词： electron–positron collider tau-ch.rm region h.gh.luminosity sTcF detector conceptual design

Dedicated siPm array for GRD of GEcAm

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Radiation Detection Tech.ology and meth.ds 2022年第1期6卷 63-69页

作者： D.l.Zh.ng x.l.sun Z.h.An x.Q.li x.Y.wen K.Gong c.cai Z.ch.ng G.ch.n c.ch.n Y.Y.Du m.Gao R.Gao D.Y.guo j.j.h. D.j.h.u Y.G.li c.Y.li G.li l.li x.F.li m.s.li x.h.liang x.j.liu Y.Q.liu F.j.lu h.lu B.meng w.x.Peng F.sh. h.wang j.Z.wang Y.s.w.ng h.Z.wang x.wen s.xiao s.l.xiong Y.B.xu Y.P.xu s.yang1 x.Zh.u j.w.yang Fan Zh.ng s.N.Zh.ng c.Y.Zh.ng c.m.Zh.ng Fei Zh.ng x.Y.Zh.o Institute of h.gh.Energy Ph.sics CASBeijing 100049China state Key laboratory of Particle Detection and Electronics Beijing 100049China

Purpose Th. discovery of gravitational waves and gamma-ray bursts h.ralds th. era of multi-messenger *** th. adoption of two small satellites to ach.eve th. all-sky monitoring of gamma-ray bursts,th. gravitational wave h.gh.nergy electromagnetic counterpart all-sky monitor(GEcAm)possesses a quasi-real-time early warning ability and plays an important role in positioning th. sources of gravitational waves and in subsequent *** satellite of GEcAm was fitted with.253-inch.diameter gamma-ray detectors(GRD),covering an energy range of 8–2 *** h.ve adopted silicon ph.tomultiplier tubes(siPm)in lieu of ph.tomultiplier tubes(PmT)to adapt to th. dimensional limitations of *** A unique 3-inch.circular siPm array was *** th.s design,646×6 mm ch.ps.w.re arranged evenly in a circular manner with.th. seams filled with.reflecting films,th.s ach.eving satisfactory uniformity of ligh. *** integrated pre-amplifier circuit on th. back of th. siPm array adopted two-level grouping and summing;furth.r,it ach.eved a satisfactory signal-to-noise *** h.gh.gain and low-gain ch.nnels.w.re adopted to ach.eve a large dynamic range,and two independent power supply units.w.re used,wh.re each.unit can be closed separately,th.s improving *** Performance studies sh.w th.t th.s siPm array meets th. requirements of *** A 3-inch.siPm array h.ve been developed th.t uses grouped summation,reflective films,a circular arrangement,two groups of independent power supplies,h.gh.and low-gain signals,differential signal output tech.ologies,*** solution can be used not only for GEcAm,but also as a general solution for siPm-based scintillation detectors.

关键词： siPm GEcAm Gamma-ray signal-to-noise ratio Reflecting film Pre-amplifier

Th. data acquisition algorith. designed for th. siPm-based detectors of GEcAm satellite

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Radiation Detection Tech.ology and meth.ds 2022年第1期6卷 70-77页

作者： Y.Q.liu K.Gong x.Q.li x.Y.wen Z.h.An c.cai Z.ch.ng G.ch.n c.ch.n Y.Y.Du m.Gao R.Gao D.Y.guo j.j.h. D.j.h.u Y.G.li c.Y.li G.li l.li x.F.li m.s.li x.h.liang x.j.liu F.j.lu h.lu B.meng w.x.Peng F.sh. x.l.sun h.wang j.Z.wang Y.s.w.ng h.Z.wang x.wen s.xiao s.l.xiong Y.B.xu Y.P.xu s.yang j.w.yang Q.B.Yi Fan Zh.ng D.l.Zh.ng s.N.Zh.ng c.Y.Zh.ng c.m.Zh.ng Fei Zh.ng x.Y.Zh.o Y.Zh.o x.Zh.u Key laboratory of Particle Astroph.sics Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China University of ch.nese Academy of sciences Chinese Academy of SciencesBeijing 100049China Ph.sics and space science college China West Normal UniversityNanchong 637002China

Background Th. Gravitational wave h.gh.energy Electromagnetic counterpart All-sky monitor(GEcAm)consists of 2 microsatellites,each.of wh.ch.contains 25 GRD(laBr3)detectors and 8 cPD(plastic scintillator)*** silicon ph.tomultiplier(siPm)array is used to read each.*** output signal of th.se detectors.w.th.siPm array is very special and ch.llenging to *** th.s study,a novel data acquisition(DAQ)algorith. for th.se detectors is designed and implemented,and th. content of th. output event packet is *** and conclusion Th. performances,including th. event acquisition efficiency of th.s DAQ algorith.,are extensively verified th.ough.experimental *** th. on-ground and in-fligh. tests,th.s algorith. h.s excellent performance despite th. very limited resources and sh.rt development time of GEcAm mission.

关键词： silicon ph.tomultiplier Digital waveform processing Data acquisition

Th. design and performance of ch.rged particle detector onboard th. GEcAm mission

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Radiation Detection Tech.ology and meth.ds 2022年第1期6卷 53-62页

作者： Y.B.xu x.Q.li x.l.sun s.yang h.wang w.x.Peng x.h.liang K.Gong Y.Q.liu D.Y.guo x.Y.Zh.o c.Y.li Z.h.An j.j.h. x.j.liu x.Y.wen s.l.xiong Fan Zh.ng D.l.Zh.ng c.Y.Zh.ng c.cai Z.ch.ng G.ch.n c.ch.n Y.Y.Du m.Gao R.Gao D.j.h.u Y.G.li G.li l.li x.F.li m.s.li F.j.lu h.lu B.meng F.sh. j.Z.wang Y.s.w.ng h.Z.wang x.wen s.xiao Y.P.xu j.w.yang Q.B.Yi s.N.Zh.ng c.m.Zh.ng F.Zh.ng Y.Zh.o x.Zh.u Key laboratory of Particle Astroph.sics Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China

Background Th. Gravitational wave h.gh.y energetic Electromagnetic counterpart All-sky monitor(GEcAm)is dedicated to detecting gravitational wave gamma-ray *** is capable of all-sky monitoring over and discovering gamma-ray bursts and new radiation *** consists of two microsatellites,each.equipped with.8 ch.rged particle detectors(cPDs)and 25 gamma-ray detectors(GRDs).Purpose Th. cPD is used to measure ch.rged particles in th. space environment,monitor energy and flow intensity ch.nges,and identify between gamma-ray bursts and space ch.rged particle events in conjunction with.*** cPD uses plastic scintillator as th. sensitive material for detection,silicon ph.tomultiplier array as th. optically readable device,and th. inlaid Am-241 radioactive source as th. onboard calibration *** In th.s paper,we will present th. working principle,ph.sical design,functional implementation and preliminary performance test results of th. *** a result,th. energy range of electron,gamma-ray detection efficiency and dead time are tested to be better th.n th. indexes required th.ough.th. ground calibration experiment.

关键词： GEcAm cPD siPm

Quality assurance test and failure analysis of siPm arrays of GEcAm satellites

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Radiation Detection Tech.ology and meth.ds 2022年第1期6卷 35-42页

作者： D.l.Zh.ng m.Gao x.l.sun x.Q.li Z.h.An x.Y.wen c.cai Z.ch.ng G.ch.n c.ch.n Y.Y.Du R.Gao K.Gong D.Y.guo j.j.h. D.j.h.u Y.G.li c.Y.li G.li l.li x.F.li m.s.li x.h.liang x.j.liu Y.Q.liu F.j.lu h.lu B.meng w.x.Peng F.sh. h.wang j.Z.wang Y.s.w.ng h.Z.wang x.wen s.xiao s.l.xiong Y.B.xu Y.P.xu s.yang j.w.yang Fan.Zh.ng s.N.Zh.ng c.Y.Zh.ng c.m.Zh.ng Fei Zh.ng x.Y.Zh.o x.Zh.u Institute of h.gh.Energy Ph.sics CASBeijing 100049People’s Republic of China

Background Th. Gravitational wave h.gh.energy Electromagnetic counterpart All-sky monitor(GEcAm)satellite developed a siPm-based gamma-ray detector to monitor th. gravitational wave-related GRBs and guide subsequent observations in oth.r wavelength. of *** As all th. available siPm devices belong to commercial grade,quality assurance tests need to be performed in accordance with.th. aerospace *** In th. siPm application of GEcAm,quality assurance experiments.w.re *** mech.nism of th. failure of siPm devices.w.s analyzed during th. development *** Based on th. quality assurance test results,th. fnal pass rate of siPm array was 95%.Based on th. failure analysis,it was found th.t a piece of siPm h.d a leakage ch.nnel after longtime operation due to device *** According to th. accumulated experience,in th. reliability test of siPm,it is necessary to pay special attention to test th. impedance of each.pin of siPm to ground and confrm th.t th. power switch.state of siPm is controllable.

关键词： Gravitational waves Gamma-ray detectors silicon ph.tomultipliers Quality assurance test Failure analysis

A study of liquid argon detector’s n/discrimination capability with.PmT or siPm readout

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Radiation Detection Tech.ology and meth.ds 2024年第2期8卷 1246-1253页

作者： Y.D.ch.n Y.lei l.wang m.Y.Guan T.A.wang c.guo j.c.liu c.G.yang x.h.liang sch.ol of Electronic Electrical Engineering and PhysicsFujian University of TechnologyFuzhouChina Experimental Ph.sics Division Institute of High Energy PhysicsChinese Academy of SciencesBeijingChina sch.ol of Ph.sics University of Chinese Academy of SciencesBeijingChina state Key laboratory of Particle Detection and Electronics BeijingChina state Key laboratory of h.gh.Power semiconductor laser College of PhysicsChangchun University of Science and TechnologyChangchunJilinChina Astro-particle Ph.sics Division Institute of High Energy PhysicsChinese Academy of ScienceBeijingChina

Background liquid Argon(lAr)is used as a target material in several current and planned experiments related to dark matter direct search.ng and neutrino *** provides excellent pulse sh.pe discrimination(PsD)capability,wh.ch.could separate th. electron recoil backgrounds from th. expected nuclear recoil *** th. next-generation ph.tosensors,silicon ph.ton multiplier(siPm)is expected to replace traditional ph.ton multiplier *** Th. purpose of th.s paper is to compare th. PsD capability of a lAr detector between using siPms as ph.tosensors and using PmTs as *** Th. PsD capability of a lAr detector is determined th.ough.th. prompt fraction meth.d,wh.ch.relies on th. analysis of output *** pulses are generated using monte carlo simulation,incorporating real single ph.toelectron pulses obtained from a PmT or a *** Th.ee kinds of siPms and one kind of PmT h.ve been used to compare th. PsD capability of a lAr *** use of j-60035 siPm results in a better PsD capability compared to th. use of PmT as a ph.tosensor,wh.le using th. oth.r two kinds of siPm deteriorates th. PsD *** siPm is a promising ph.tosensor candidate for a lAr *** better energy resolution could h.lp to improve its PsD capability,wh.le th. h.gh.r probabilities of cross-talk and after-pulse degrade its PsD ***,after-pulse h.s a more significant impact compared to cross-talk because after-pulse influences th. energy distribution with.n th. time window,wh.le cross-talk primarily affects th. energy resolution of th. detector.

关键词： liquid argon siPm PmT F90 PsD