SMuK 2021 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 11: Instrumentation IV

HK 11.7: Vortrag

Dienstag, 31. August 2021, 15:45–16:00, H4

Low Gain Avalanche Diodes for timing applications in HADES — •Wilhelm Krueger¹, Tetyana Galatyuk^1,2, Vadym Kedych¹, Sergey Linev², Jan Michel³, Jerzy Pietraszko², Adrian Rost^1,4, 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 σ_T0<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 σ_t≈ 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.