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Feb 21 – 25, 2022
Vienna University of Technology
Europe/Vienna timezone

pLGAD - A Novel Detector Concept for Low Penetrating Particles

Not scheduled
Vienna University of Technology

Vienna University of Technology

Gusshausstraße 27-29, 1040 Wien
Recorded Presentation Semiconductor Detectors


Waleed Khalid (OEAW)


In Low Energy Physics, where particles only penetrate a few hundreds of nanometers within the active sensor depth, obtaining a position resolved signal with high efficiency at a reasonable cost is extremely difficult. While low-noise silicon sensors with internal amplification are available on the market, these sensors are often produced for High Energy Physics applications. Consequently, these sensors lack a thin entrance window (in the order of tens of nm) and full amplification of signals created near the sensor’s surface (< 1 µm) to provide a good signal to ratio for the efficient detection of low-penetrating particles.
In this poster, we propose a new pixelated silicon sensor based on the iLGAD (inverted Low Gain Avalanche Detector) principle. The pLGAD (low-penetrating Particles Low Gain Avalanche Detector) sensor concept is specifically designed to detect low-penetrating particles and will have a higher detection efficiency than non-silicon technologies while being a lot cheaper and easier to operate than other competing silicon technologies. Potential applications of such a sensor include usage in neutron beta decay experiments, low energy X-ray detection, medical physics and space experiments.

Primary author


Prof. Johann Marton (SMI, OeAW) Giulio Pellegrini (Centro Nacional de Microelectrónica (IMB-CNM-CSIC) (ES)) Mr Albert Doblas (CNM-CSIC) Dr David Flores (CNM-CSIC) Dr Manfred Valentan Dr Salvador Hidalgo (CNM-CSIC) Dr Gertrud Konrad

Presentation materials