The 2023 International Workshop on the High Energy Circular Electron Positron Collider

CEPC drift chamber is an important track detector that can accurately measure momentum resolution and energy loss. Currently, the drift chamber uses CKF to find the hit on the same track, and then uses Genfit to fit this track. At present, the track reconstruction algorithm of CEPC drift chamber has been fully developed and has very good physics performance.

With the expansion of high-energy physics experiments and the improvement of precision, the amount of data generated in high-energy physics has increased dramatically. The design of data storage systems plays a crucial role in the efficiency of data analysis and processing. This report will introduce the current situation of the data storage system at IHEP, including disk, tape, and grid...

The Delphes is a versatile framework simulating multipurpose detector responses. Its speed allows phenomenological studies, parameter space scans, and rapid testing of detector geometries. In this study, the Delphes is used to to simulate CEPC's 4th detector, incorporating particle identification with TOF and dN/dx.

dN/dx represents primary ionizations per length unit, following a Poisson...

Opticks is an open source project that accelerates optical photon simulation
by integrating GPU ray tracing, accessed via the NVIDIA OptiX 7+ API, with
Geant4 based simulations.
A single NVIDIA Turing GPU from the first RTX generation has been measured to provide optical
photon simulation speedup factors exceeding 1500 times single threaded Geant4
with a full JUNO analytic GPU...

High-energy physics relies on large and accurate samples of simulated events, but generating these samples with GEANT4 is CPU intensive. The ATLAS experiment has employed generative adversarial networks (GANs) for fast shower simulation, which is an important approach to solving the problem. Quantum GANs, leveraging the advantages of quantum computing, have the potential to outperform standard...

At the High Luminosity Large Hadron Collider (HL-LHC) and beyond, we will enter the “exa-byte” era, where the annual computing cost will increase by a factor of 10-20 from the ongoing LHC program. Without various innovations, future experiments will not be able to operate. The Graphical Processing Units (GPU) and other state-of-the-art artificial intelligence technologies will be the baseline...

• Introdution
• Status of silicon tracking software
• Application on full simulation
• Application on test beam of vertex
• Summary

The CEPC experiment is estimated to have about 3PB/year data for Higgs/W factory and will reach EB in Z factory. Computing is an important part for CEPC during data-taking and detector R&D period. The CEPC distributed computing system has been built based on DIRAC – a common distributed computing framework in HEP field. This report will present status of the CEPC distributed computing system...

Simulation software is a vital part for the optimization of detector design and performance studies of reconstruction and analysis. The simulation software in CEPCSW consists of physics generators, detector simulation, and electronics simulation. These components have been implemented as algorithms in the Gaudi framework, while they also integrated with the components from Key4hep, such as...