20th International Conference on Computing in High Energy and Nuclear Physics (CHEP2013)

K-long and muon trigger in the Belle II experiment

15 Oct 2013, 17:45

20m

Verwey Kamer (Amsterdam, Beurs van Berlage)

Oral presentation to parallel session Data acquisition, trigger and controls Data Acquisition, Trigger and Controls

Speaker

Leo Piilonen (Virginia Tech)

Description

I will describe the first-level trigger in the Belle II experiment that examines the hit patterns in the K-long and muon (KLM) detector to find evidence for compact clusters (indicative of a K-long meson hadronic shower) or tracks (indicative of a charged particle from the interaction point or of a cosmic ray). The algorithm is implemented in a VIRTEX6 FPGA on a Universal Trigger Module (used throughout the Belle II experiment) that receives raw inputs from each of the KLM sectors via 32 fiber-optic cables, sorts these data, performs rudimentary cluster-finding and track-fitting, and delivers its output to the Global Decision Logic module. I also describe the offline KLM-trigger simulation module in the Belle II data analysis code library.

Presentation materials

Slides

Piilonen-KLMTrigger-2013b.pdf