Beam Test Results of NDL Low Gain Avalanche Detectors (LGAD)

S. Xiao, S. Alderweireldt,S. Ali,C. Allaire,C. Agapopoulou,N. Atanov,M. K. Ayoub,G. Barone,D. Benchekroun,A. Buzatu,D. Caforio,L. Castillo Garcia,Y. Chan,H. Chen,V Cindro, L. Ciucu,J. Barreiro Guimaraes da Costa,H. Cui, F. Davo Miralles,Y. Davydov,G. d'Amen,C. de la Taille,R. Kiuchi,Y. Fan,A. Falou,A. S. C. Ferreira,M. Garau,J. Ge,A. Ghosh,G. Giacomini,E. L. Gkougkousis,C. Grieco,S. Guindon,D. Han,S. Han, M. Holmberg,A. Howard,Y. Huang,M. Jing,Y. Khoulaki,G. Kramberger,E. Kuwertz, H. Lefebvre,M. Leite,A. Leopold,C. Li,Q. Li,H. Liang,Z. Liang,B. Liu, J. Liu, A. Luthfi,F. Lyu,S. Malyukov,I Mandic,L. Masetti,M. Mikuz,I Nikolic, L. Polidori,R. Polifka, O. Posopkina,B. Qi,K. Ran, B. J. G. Reynolds,C. Rizzi,M. Robles Manzano,E. Rossi,A. Rummler,S. Sacerdoti,G. T. Saito,N. Seguin-Moreau,L. Serin, L. Shan,L. Shi,X. Shi, N. F. Sjostrom,A. Soares Canas Ferreira,J. Soengen,H. Stenzel, A. J. Szadaj,Y. Tan,S. Terzo,J. O. Thomas,E. Tolley,A. Tricoli,S. Trincaz-Duvoid,R. Wang,S. M. Wang,W. Wang,K. Wu,T. Yang,Y. Yang,C. Yu,X. Zhang,L. Zhao,M. Zhao,Z. Zhao,X. Zheng,X. Zhuang

Nuclear instruments and methods in physics research Section A, Accelerators, spectrometers, detectors and associated equipment/Nuclear instruments & methods in physics research Section A, Accelerators, spectrometers, detectors and associated equipment（2021）

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Abstract

A High-Granularity Timing Detector (HGTD) is proposed based on the Low-Gain Avalanche Detector (LGAD) for the ATLAS experiment to satisfy the time resolution requirement for the up-coming High Luminosity at LHC (HL-LHC). We report on beam test results for two proto-types LGADs (BV60 and BV170) developed for the HGTD. Such modules were manufactured by the Institute of High Energy Physics (IHEP) of Chinese Academy of Sciences (CAS) collaborated with Novel Device Laboratory (NDL) of the Beijing Normal University. The beam tests were performed with 5 GeV electron beam at DESY. The timing performance of the LGADs was compared to a trigger counter consisting of a quartz bar coupled to a SiPM readout while extracting reference SiPM by fitting with a Gaussian function. The time resolution was obtained as 41 ps and 63 ps for the BV60 and the BV170, respectively.

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Key words

LGAD,Time resolution,Electron beam,CFD

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