Characterization of BNL and HPK AC-LGAD sensors with a 120 GeV proton beam

Heller, Ryan; Madrid, C.; Apresyan, A.; Brooks, W. K.; Chen, Wei; D'Amen, G.; Giacomini, G.; Goya, I.; Hara, K.; Kita, S.; Los, S.; Molnar, A.; Nakamura, K.; Peña, C.; San Martín, C.; Tricoli, A.; Ueda, T.; Xie, S.

doi:10.1088/1748-0221/17/05/p05001

Characterization of BNL and HPK AC-LGAD sensors with a 120 GeV proton beam

Journal Article · Mon May 02 00:00:00 EDT 2022 · Journal of Instrumentation

DOI:https://doi.org/10.1088/1748-0221/17/05/p05001· OSTI ID:1871830

Heller, Ryan ^[1]; Madrid, C. ^[1]; Apresyan, A. ^[1]; Brooks, W. K. ^[2]; Chen, Wei ^[3]; D'Amen, G. ^[3]; Giacomini, G. ^[3]; Goya, I. ^[4]; Hara, K. ^[4]; Kita, S. ^[4]; Los, S. ^[1]; Molnar, A. ^[5]; Nakamura, K. ^[6]; Peña, C. ^[1]; San Martín, C. ^[7]; Tricoli, A. ^[3]; Ueda, T. ^[4]; Xie, S. ^[5]

Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Universidad Tecnica Federico Santa Maria, Valparaiso (Chile); Millenium Institute for Subatomic Physics at the High-Energy Frontier (SAPHIR) of ANID, Santiago (Chile)
Brookhaven National Lab. (BNL), Upton, NY (United States)
Univ. of Tsukuba (Japan)
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States); California Institute of Technology (CalTech), Pasadena, CA (United States)
High Energy Research Organization, Tsukuba (Japan)
Universidad Tecnica Federico Santa Maria, Valparaiso (Chile)

We present measurements of AC-LGADs performed at the Fermilab's test beam facility using 120 GeV protons. Here we studied the performance of various strip and pad AC-LGAD sensors that were produced by BNL and HPK. The measurements are performed with our upgraded test beam setup that utilizes a high precision telescope tracker, and a simultaneous readout of up to 7 channels per sensor, which allows detailed studies of signal sharing characteristics. These measurements allow us to assess the differences in designs between different manufacturers, and optimize them based on experimental performance. We then study several reconstruction algorithms to optimize position and time resolutions that utilize the signal sharing properties of each sensor. We present a world's first demonstration of silicon sensors in a test beam that simultaneously achieve better than 6–10 μm position and 30 ps time resolution. This represents a substantial improvement to the spatial resolution than would be obtained with binary readout of sensors with similar pitch.

View Accepted Manuscript (DOE)

Research Organization:: Brookhaven National Laboratory (BNL), Upton, NY (United States); Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)

Sponsoring Organization:: Ministry of Education, Culture, Sports, Science and Technology of Japan; USDOE Office of Science (SC), Basic Energy Sciences (BES); USDOE Office of Science (SC), High Energy Physics (HEP)

Grant/Contract Number:: AC02-07CH11359; SC0012704

OSTI ID:: 1871830

Report Number(s):: BNL-223065-2022-JAAM

Journal Information:: Journal of Instrumentation, Journal Name: Journal of Instrumentation Journal Issue: 05 Vol. 17; ISSN 1748-0221

Publisher:: Institute of Physics (IOP)Copyright Statement

Country of Publication:: United States

Language:: English

References (15)

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