Erlangen 2026 – scientific programme
Parts | Days | Selection | Search | Updates | Downloads | Help
T: Fachverband Teilchenphysik
T 70: Electronics, Trigger, DAQ III
T 70.2: Talk
Thursday, March 19, 2026, 16:30–16:45, KH 00.023
Commissioning, Validation, and Simulation of the JUNO hardware trigger logic — •Ze Chen1,2 and Livia Ludhova1,2 — 1GSI Helmholtzzentrum für Schwerionenforschung, 64291 Darmstadt, Germany — 2Institute of Physics and EC PRISMA+, Johannes Gutenberg Universität Mainz, Mainz, Germany
The Jiangmen Underground Neutrino Observatory (JUNO) is a large-scale neutrino experiment using a 20-kt liquid scintillator as the Central Detector (CD) surrounded by a 35-kt water Cherenkov veto Detector (WCD). The experiment completed full detector commissioning and subsequently began physics data taking on August 26 2025. Using an exposure of 59.1 days, JUNO has achieved world-leading precision in the measurement of solar neutrino oscillation parameters. Reaching this level of performance requires a robust and accurately functioning hardware trigger system for both subdetectors.
In this talk, we present a comprehensive validation of the JUNO hardware trigger logic using commissioning data. The two JUNO subdetectors employ different trigger logics: the CD uses a multiplicity trigger with dedicated handling of muons, while the WCD adopts a regional scheme that fires when a cluster of Photomultiplier tubes (PMTs) in a local area is hit. To evaluate trigger performance, PMT hit information is analysed across all event categories. In particular, we examine the dynamic CD trigger conditions, which aim to suppress consecutive muon-induced triggers and mitigate DAQ I/O bottlenecks. We also implemented the trigger logic in JUNO’s detector simulation framework, enabling future optimization of trigger configurations.
Keywords: JUNO; trigger validation