Göttingen 2025 – scientific programme

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T: Fachverband Teilchenphysik

T 7: Detectors II (Gaseous Detectors)

T 7.5: Talk

Monday, March 31, 2025, 17:45–18:00, VG 1.102

Development and Implementation of a new Trigger System in the LMU Cosmic Ray Facility for Level-0 MDT Trigger Processor Testing — •Nick Schneider, Otmar Biebel, Valerio D'Amico, Stefanie Götz, Ralf Hertenberger, Eshita Kumar, Chrysostomos Valderanis, Fabian Vogel, Daniel Grewe, and Nirmal Mathew — LMU München

The Phase-II Upgrade of the ATLAS Muon Spectrometer for the High Luminosity LHC (HL-LHC) includes the installation of a new and more efficient trigger and readout system for the Monitored Drift Tube (MDT) chambers. One of the components is the new Level-0 MDT Trigger Processor (L0MDT). The LMU Cosmic Ray Facility (CRF) is a test stand equipped with two ATLAS series production MDT BOS chambers and a scintillator hodoscope for triggering. It could be used to test L0MDT under realistic conditions. Since it is running on unsupported legacy electronics an upgrade to ALTAS Phase-II standard has to be done first. This also ensures that the CRF remains operational in the future. For the new electronics an upgrade of the trigger system is needed. In addition the regular Phase-II trigger path has to be changed such that it fits the specifications of the CRF including emulators for not yet available electronics. This talk will cover the operating principal and the hardware implementation of this new trigger system and will present some first results. The readout electronics will not be covered in this talk. A first aim after the full upgrade of the trigger and the readout electronics is to enable full testing of L0MDT in a realistic environment.

Keywords: Electronics; MDT; Trigger; Cosmic Rays