Conveners
TDAQ & Online Computing: 1
- Miroslav Saur (Lanzhou University)
- Fei Li (EPC, IHEP)
TDAQ & Online Computing: 2
- Da Yu Tou (Tsinghua University)
- Fei Li (EPC, IHEP)
Description
Zoom Link, ID: 91011235165, Code: 983836
With the increasing luminosity of SuperKEKB, the background rate in
the Belle II detector is expected to increase, potentially exceeding
the processing capacity of the current High Level Trigger (HLT)
system. To mitigate the HLT processing load, we are developing a
GPU-based pre-filtering system that performs part of the event
reconstruction on GPUs before the conventional HLT processing....
Incoherent electron–positron pair production, commonly referred to as beamstrahlung, constitutes the dominant beam-induced background for the CPEC, accounting for more than 95% of the total background events. Reliable modeling of this process is therefore essential for both detector response estimation and trigger system design. At present, the Guinea-Pig simulation package is employed to...
The Circular Electron–Positron Collider (CEPC) will pursue a broad physics program by operating at several center-of-mass energies and luminosity levels, including Higgs, Z, and W-pair modes. This range of operating points places diverse requirements on the detector and its trigger and data acquisition (TDAQ) system. The trigger system is organized into two levels: a Level-1 (L1) trigger for...
Modern particle physics detectors contain many readout channels that continuously produce large amounts of data. These data must be transferred from back-end electronics to readout servers with high bandwidth and low latency while keeping CPU processing and memory-copy overhead low. This work presents an FPGA-based RoCEv2 protocol stack designed for detector data readout. The protocol stack...
The Circular Electron Positron Collider (CEPC) is a next-generation high-energy electron–positron collider. Its Reference Detector will generate large volumes of data, placing demanding requirements on the trigger and data acquisition system. A fully software-based trigger offers flexible deployment, straightforward upgrades, and extensible algorithm support, while introducing substantial...
The development of robust, precise and computationally efficient track reconstruction is important for CEPC offline reconstruction and its future high-level trigger (HLT) development, where tracking algorithms must balance reconstruction performance with the computational demands of large-scale event processing. In particular, charged-particle motion in magnetic fields and interactions with...
LHCb's Run 3 trigger is a fully software-based, two-stage system operating at the full 30 MHz bunch-crossing rate, a first for a collider experiment. HLT1, built on the GPU-accelerated Allen framework, performs the real-time reconstruction and selection that reduces the input rate to a manageable level, while HLT2, built on Gaudi, performs the full offline-quality reconstruction on the...
ALICE is the dedicated heavy-ion experiment at the LHC at CERN.
For LHC Run 3, ALICE upgraded the TPC with a GEM readout to support continuous operation and the recording of all Pb-Pb collisions.
The peak Pb-Pb recording rate increased from around 1 kHz to 50 kHz.
In order to keep up with the increased data rate, ALICE upgraded its whole online computing scheme, and performs full online...
