TWEPP26 Topical Workshop on Electronics for Particle Physics

Session

Timing & Trigger

28 Sept 2026, 16:30

Castelldefels, Barcelona, Spain

141. Central Trigger and Timing System Architecture for ALICE3 Continuous Readout in Run 5

Filip Pazdic (University of Birmingham (GB))

28/09/2026, 16:30

Timing & Trigger Distribution

Oral

The Central Trigger and Timing architecture for the ALICE3 experiment in Run 5 is presented. Extending the continuous readout paradigm established in ALICE Run 3 and Run 4, the system provides global timing distribution, synchronization, and control without hardware physics triggers. A common back-end platform is considered for the Central Trigger Processor (CTP), Local Trigger Units (LTUs),...

44. Development of New Methodology for the Clock phase adjustment and Precise Fiber Length Measurements for the HL-LHC ATLAS TGC front-end electronics

Kazuma Maki (ICEPP, The University of Tokyo)

28/09/2026, 16:50

Timing & Trigger Distribution

Oral

We present a clock phase-alignment system for the Phase-2 LHC-ATLAS TGC system, in which all 1,434 front-end electronics modules receive clocks via 1,434 individual fibers. Precise alignment well below 1 ns is required to ensure optimal BC identification with minimal gate width. To address fiber-length–induced clock skew, we developed a dedicated timing calibration system using custom...

16. A novel TDC based on the lpGBT electrical receivers

Raghunandan Shukla (Imperial College (GB))

28/09/2026, 17:10

Timing & Trigger Distribution

Oral

A common challenge in beam tests is that particles do not arrive synchronously to the detector reference clock. Thus, the time of arrival needs to be measured with an external detector. For beam tests of the CMS High Granularity Calorimeter (HGCAL), we used the electrical receivers of CERN’s low-power gigabit transceiver (lpGBT) ASIC to directly digitize a trigger pulse. The signal is sampled...

172. Design and Experimental Results for the PSLink Mezzanine - an FPGA-Agnostic System for Achieving Picosecond-Level Phase Stability in Timing Distribution Links for HEP Experiments

Edoardo Orzes

29/09/2026, 09:00

Timing & Trigger Distribution

Oral

New detectors for High Energy Physics are being developed to withstand the high-luminosity upgrade of the LHC. This upgrade increases the requirements for phase stability of the timing distribution systems (<10ps RMS). Commercial transceivers do not meet these stringent requirements, although ad-hoc solutions have been implemented to measure phase drifts and compensate, these are FPGA-specific...

123. FGPA-based advanced muon trigger algorithms for long-lived particle detection at the High-Luminosity LHC

Daniel Estrada (Universidad de Oviedo (ES))

29/09/2026, 09:20

Timing & Trigger Distribution

Oral

The CMS Level-1 muon trigger must be redesigned for the High-Luminosity LHC to cope with extreme data rates while remaining sensitive to rare signatures such as long-lived particles. We present recent developments in intelligent muon reconstruction and identification at the trigger level. We exploit low-level hit information from the muon system at MHz rates to detect anomalous shower activity...

122. The CMS Level-1 Track Finder for the HL-LHC: Real-Time 40 MHz Track Reconstruction

Mei-Li Holmberg (University of Bristol (GB))

29/09/2026, 09:40

Timing & Trigger Distribution

Oral

The High Luminosity LHC (HL-LHC) will push triggering systems to their limits due to extreme data rates. In response, the CMS experiment is deploying the Level-1 Track Finder: an FPGA-based trigger subsystem designed to perform real-time track reconstruction at 40 MHz. The Track Finder will reconstruct tracks within a strict 4 µs latency using a custom track-finding algorithm. The additional...