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X-ray characterization of BUSARD chip: A HV-SOI monolithic particle detector with pixel sensors under the buried oxide

Alcalde Bessia, F.; Lipovetzky, J.; Perić, I. ORCID iD icon 1
1 Institut für Prozessdatenverarbeitung und Elektronik (IPE), Karlsruher Institut für Technologie (KIT)

Abstract:

This work presents the design of BUSARD, an application specific integrated circuit (ASIC) for the detection of ionizing particles. The ASIC is a monolithic active pixel sensor which has been fabricated in a High-Voltage Silicon-On-Insulator (HV-SOI) process that allows the fabrication of a buried N+ diffusion below the Buried OXide (BOX) as a standard processing step. The first version of the chip, BUSARD-A, takes advantage of this buried diffusion as an ionizing particle sensor. It includes a small array of 13×13 pixels, with a pitch of 80 μm, and each pixel has one buried diffusion with a charge amplifier, discriminator with offset tuning and digital processing. The detector has several operation modes including particle counting and Time-over-Threshold (ToT). An initial X-ray characterization of the detector was carried out, obtaining several pulse height and ToT spectra, which then were used to perform the energy calibration of the device. The Molybdenum 𝐊$_{α}$ emission was measured with a standard deviation of 127 e$^{-}$ of ENC by using the analog pulse output, and with 276 e$^{-}$ of ENC by using the ToT digital output. The resolution in ToT mode is dominated by the pixel-to-pixel variation.


Preprint §
DOI: 10.5445/IR/1000143640
Veröffentlicht am 05.12.2022
Originalveröffentlichung
DOI: 10.1088/1748-0221/16/12/P12030
Scopus
Zitationen: 1
Web of Science
Zitationen: 1
Dimensions
Zitationen: 1
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Prozessdatenverarbeitung und Elektronik (IPE)
Publikationstyp Zeitschriftenaufsatz
Publikationsdatum 01.12.2021
Sprache Englisch
Identifikator ISSN: 1748-0221
KITopen-ID: 1000143640
HGF-Programm 54.12.01 (POF IV, LK 01) Detection and Measurement
Erschienen in Journal of Instrumentation
Verlag Institute of Physics Publishing Ltd (IOP Publishing Ltd)
Band 16
Heft 12
Seiten Art.-Nr.: P12030
Nachgewiesen in Dimensions
Web of Science
Scopus
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