XXVI DAE-BRNS High Energy Physics Symposium 2024

CMS High Level Trigger(HLT) performance in Run 3

Not scheduled

20m

Swatantrata Bhavan, Banaras Hindu University, Varanasi

Postar Future experiments and detector development

Speaker

Dipak Maity (National Institute of Science Education and Research (NISER) (IN))

Description

The CMS experiment at CERN operates a two-stage trigger system to efficiently filter and record events of potential physics interest. The system consists of a hardware-based Level 1 (L1) trigger, which processes detector data at 40 MHz using fast electronics such as FPGAs and ASICs, reducing the data rate to around 110 kHz. This is followed by a software-based High-Level Trigger (HLT), which runs on large computer farms and further reduces the event rate to approximately 7 kHz for storage. To handle the higher center-of-mass energy, increased luminosity, and new physics challenges in Run 3, advanced trigger algorithms and technologies, such as heterogeneous computing with GPUs, have been developed. This talk summarizes the performance of the CMS HLT during the Run 3.