SMuK 2021 – scientific programme
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HK: Fachverband Physik der Hadronen und Kerne
HK 11: Instrumentation IV
HK 11.7: Talk
Tuesday, August 31, 2021, 15:45–16:00, H4
Low Gain Avalanche Diodes for timing applications in HADES — •Wilhelm Krueger1, Tetyana Galatyuk1,2, Vadym Kedych1, Sergey Linev2, Jan Michel3, Jerzy Pietraszko2, Adrian Rost1,4, Michael Traeger2, Michael Traxler2, and Christian Joachim Schmidt2 — 1TU Darmstadt, Germany — 2GSI GmbH, Darmstadt, Germany — 3Goethe-Universität Frankfurt, Germany — 4FAIR GmbH, Darmstadt, Germany
A reaction-time (T0) determination with a precision of σT0<50 ps is required by the HADES physics program in order to ensure e.g. an excellent particle identification via Time-of-Flight measurements. In addition, monitoring of beam properties such as position, width and time structure is necessary. In order to fulfill these tasks, the recently emerged Low Gain Avalanche Diode (LGAD) technology seems to be a fitting candidate. A timing precision of σt≈ 47 ps was demonstrated with an LGAD based prototype T0 detector at COSY (Juelich), with a 1.92 GeV proton beam. Therefore, it is planed to use LGADs in upcoming experiments with proton, pion and possibly ion beams. The so far reached results will be presented in this contribution. In addition, future plans on development of dedicated ASICs capable of dealing with high rates and a high number of read-out channels will be mentioned. This work is supported by F&E, TU Darmstadt and HGS-HIRe.