Erlangen 2026 – scientific programme
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HK: Fachverband Physik der Hadronen und Kerne
HK 36: Instrumentation VII
HK 36.5: Talk
Thursday, March 19, 2026, 15:00–15:15, PHIL B 302
Amplification Based Radiation Damage Compensation in Diamond Detectors — •Yevhen Kozymka1, Thomas Bergauer2, Tetyana Galatyuk1,3,4, Albert Hirtl5, Matthias Kausel5,6, Mladen Kis3, Wilhelm Krüger1, Sergey Linev3, Jan Michel3, Jerzy Pietraszko3, Christian Joachim Schmidt3, Michael Träger3, Michael Traxler3, Felix Ulrich-Pur5, Matteo Centis Vignali7, and Ashish Bisht7 — 1Technische Universität Darmstadt — 2Marietta Blau Institute for Particle Physicsof the Austrian Academy of Sciences — 3GSI Helmholtzzentrum für Schwerionenforschung GmbH — 4Helmholtz Forschungsakademie Hessen für FAIR — 5TU Wien, Atominstitut — 6EBG MedAustron — 7Fondazione Bruno Kessler, Centre of Materials and Microsystems
Diamond detectors are widely used for beam monitoring and time zero applications due to their high timing precision, detection efficiency and radiation hardness. However, the accumulated radiation damage from heavy-ion beams eventually drops the charge collection efficiency below the detectable threshold, resulting in loss of efficiency.
Diagnostics are performed on a pcCVD diamond sensor that saw heavy use in the mCBM experiment and has an efficiency hole in the center, utilizing LGADs as reference detectors. We demonstrate the use of a two-stage amplification circuit and conversion from strip to pad readout for restoring the efficiency of a highly damaged diamond sensor with a 73 AMeV helium beam.
Keywords: Diamond; Radiation Damage; Amplifier; CBM