Testbeam results of the Picosecond Avalanche Detector proof-of-concept prototype. (1st October 2022)

• Record Type: Journal Article
• Authors: Iacobucci, G.; Zambito, S.; Milanesio, M.; Moretti, T.; Saidi, J.; Paolozzi, L.; Munker, M.; Cardella, R.; Martinelli, F.; Picardi, A.; Rücker, H.; Trusch, A.; Valerio, P.; Cadoux, F.; Cardarelli, R.; Débieux, S.; Favre, Y.; Fenoglio, C.A.; Ferrere, D.; Gonzalez-Sevilla, S.; Gurimskaya, Y.; Kotitsa, R.; Magliocca, C.; Nessi, M.; Pizarro-Medina, A.; Sabater Iglesias, J.; Vicente Barreto Pinto, M.
• Is Part Of: Journal of instrumentation. Volume 17:Number 10(2022)
• Publication Date: 2022-10-01
• Subjects: Instrumentation and methods for time-of-flight (TOF) spectroscopy -- Particle tracking detectors (Solid-state detectors) -- Pixelated detectors and associated VLSI electronics -- Solid state detectors; Scientific apparatus and instruments -- Periodicals; 502.84
• DOI: 10.1088/1748-0221/17/10/P10040
• Languages: English
• ISSNs: 1748-0221

Abstract

Abstract: The proof-of-concept prototype of the Picosecond Avalanche Detector, a multi-PN junction monolithic silicon detector with continuous gain layer deep in the sensor depleted region, was tested with a beam of 180 GeV pions at the CERN SPS. The prototype features low noise and fast SiGe BiCMOS frontend electronics and hexagonal pixels with 100 μm pitch. At a sensor bias voltage of 125 V, the detector provides full efficiency and average time resolution of 30, 25 and 17 ps in the overall pixel area for a power consumption of 0.4, 0.9 and 2.7 W/cm 2, respectively. In this first prototype the time resolution depends significantly on the distance from the center of the pixel, varying at the highest power consumption measured between 13 ps at the center of the pixel and 25 ps in the inter-pixel region.