%0 Conference Paper
%A Diehl, Inge
%A Feindt, Finn
%A Hansen, Karsten
%A Lachnit, Stephan
%A Poblotzki, Frauke
%A Rastorguev, Daniil
%A Spannagel, Simon
%A Vanat, Tomas
%A Vignola, Gianpiero
%T The DESY digital silicon photomultiplier: Device characteristics and first test-beam results
%J Nuclear instruments & methods in physics research / Section A
%V 1064
%@ 0168-9002
%C Amsterdam
%I North-Holland Publ. Co.
%M PUBDB-2024-00531
%P 169321
%D 2024
%Z CC BY 4.0 Deed, Received 13 February 2024, Revised 27 March 2024, Accepted 3 April 2024, Available online 5 April 2024, Version of Record 13 April 2024.
%X Silicon Photomultipliers (SiPMs) are state-of-the-art photon detectors used in particle physics, medical imaging, and beyond. They are sensitive to individual photons in the optical wavelength regime and achieve time resolutions of a few tens of picoseconds, which makes them interesting candidates for timing detectors in tracking systems for particle physics experiments. The Geiger discharges triggered in the sensitive elements of a SiPM, Single-Photon Avalanche Diodes (SPADs), yield signal amplitudes independent of the energy deposited by a photon or ionizing particle. This intrinsically digital nature of the signal motivates its digitization already on SPAD level. A digital SiPM (dSiPM) was designed at Deutsches Elektronen Synchrotron (DESY), combining a SPAD array with embedded CMOS circuitry for on-chip signal processing. A key feature of the DESY dSiPM is its capability to provide hit-position information on pixel level, and one hit time stamp per quadrant at a 3 MHz readout-frame rate. The pixels comprise four SPADs and have a pitch of about 70 μm. The four time stamps are provided by 12 bit Time-to-Digital Converters (TDCs) with a resolution better than 100 ps. The chip was characterized in the laboratory to determine dark count rate, breakdown voltage, and TDC characteristics. Test-beam measurements are analyzed to assess the DESY dSiPMs performance in the context of a 4D-tracking applications. The results demonstrate a spatial hit resolution on a pixel level, a minimum-ionizing particle detection efficiency of about 30 
%B 13th International "Hiroshima" Symposium on the Development and Application of Semiconductor Tracking Detectors
%C 3 Dec 2023 - 8 Dec 2023, Vancouver (Canada)
Y2 3 Dec 2023 - 8 Dec 2023
M2 Vancouver, Canada
%F PUB:(DE-HGF)16 ; PUB:(DE-HGF)8
%9 Journal ArticleContribution to a conference proceedings
%U <Go to ISI:>//WOS:001300021300001
%R 10.1016/j.nima.2024.169321
%U https://bib-pubdb1.desy.de/record/602205