Journal
JOURNAL OF ASTRONOMICAL TELESCOPES INSTRUMENTS AND SYSTEMS
Volume 8, Issue 1, Pages -Publisher
SPIE-SOC PHOTO-OPTICAL INSTRUMENTATION ENGINEERS
DOI: 10.1117/1.JATIS.8.1.014007
Keywords
Cherenkov telescope array; instrumentation; imaging atmospheric Cherenkov telescopes; prototype Schwarzschild-Couder telescope; very-high-energy gamma-ray astronomy; silicon photomultipliers
Funding
- U.S. National Science Foundation
- Smithsonian Institution
- Istituto Nazionale di Fisica Nucleare (INFN) in Italy
- Helmholtz Association in Germany
- NSF [PHY-1229792, PHY-1229205, PHY-1229654, PHY-1913552, PHY-1807029, PHY-1510504, PHY-1707945, PHY-2013102, PHY-1707544, PHY-2011361, PHY-1707432, PHY-1806554]
- Barnard College, California State University East Bay
- Columbia University
- Georgia Institute of Technology
- Iowa State University
- Stanford University
- University of Chicago
- University of Alabama in Huntsville
- University of California
- University of Iowa
- University of Utah
- University of Wisconsin-Madison
- Washington University in St. Louis
- Italian Ministry of University and Research (MUR)
- Japan Society for the Promotion of Science by KAKENHI [JP23244051, JP25610040, JP15H02086, JP16K13801, JP17H04838, JP18KK0384]
- UNAM-PAPIIT [IG101320]
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This paper presents a detailed description of the pSCT camera, including the basic concept, mechanical design, detectors, electronics, current status, and first light.
The prototype Schwarzschild-Couder Telescope (pSCT) is a candidate for a medium-sized telescope in the Cherenkov Telescope Array. The pSCT is based on a dual-mirror optics design that reduces the plate scale and allows for the use of silicon photomultipliers as photodetectors. The prototype pSCT camera currently has only the central sector instrumented with 25 camera modules (1600 pixels), providing a 2.68-deg field of view (FoV). The camera electronics are based on custom TARGET (TeV array readout with GSa/s sampling and event trigger) application-specific integrated circuits. Field programmable gate arrays sample incoming signals at a gigasample per second. A single backplane provides camera-wide triggers. An upgrade of the pSCT camera that will fully populate the focal plane is in progress. This will increase the number of pixels to 11,328, the number of backplanes to 9, and the FoV to 8.04 deg. Here, we give a detailed description of the pSCT camera, including the basic concept, mechanical design, detectors, electronics, current status, and first light. (C) 2022 Society of Photo-Optical Instrumentation Engineers (SPIE)
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