Göttingen 2025 – wissenschaftliches Programm
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T: Fachverband Teilchenphysik
T 70: Silicon Detectors VI (MAPS, Mighty Tracker)
T 70.2: Vortrag
Donnerstag, 3. April 2025, 16:30–16:45, VG 0.111
Time and position resolved charge collection studies on a monolithic active pixel sensor — •Jona Dilg1,3, Ono Feyens1,4, Ingrid-Maria Gregor1,3, Karsten Hansen1, Yajun He1, Lennart Huth1, Finn King1, Stefano Maffessanti1, Larissa Mendes1,3, Christian Reckleben1, Sara Ruiz Daza1,3, Manuel Alejandro del Rio Viera1,3, Judith Schlaadt1,3, Adriana Simancas1,3, Simon Spannagel1, Tomas Vanat1, Anastasiia Velyka1, Gianpiero Vignola1,3, and Haakan Wennlöf2 — 1Deutsches Elektronen-Synchrotron DESY, Germany — 2National Institute for Subatomic Physics Nikhef, Netherlands — 3Universität Bonn, Germany — 4Vrije Universiteit Brussel, Belgium
Monolithic Active Pixel Sensors (MAPS) are used in vertex detectors for high-energy particle colliders. They integrate sensors and readout electronics on a single chip, reducing material use compared to hybrid pixel detectors. The recent adoption of a 65 nm Complementary Metal-Oxide-Semiconductor (CMOS) imaging process enables a smaller pixel pitch with enhanced in-pixel electronics.
The DESY ER1 test chip consists of a single pixel and a 2 × 2 matrix with 35 × 25 µm pitch, with in-pixel amplification and digitization. In contrast to complementary test structures with fully digital readouts, it allows direct measurement of amplifier output, aiding in understanding effects obscured in purely digital schemes.
This contribution presents the chip’s design and the insights gained through its characterization and pulse shape analysis of laboratory and test beam measurements.
Keywords: MAPS; CMOS; pixel; future lepton collider