The 2025 International Workshop on the High Energy Circular Electron Positron Collider

The Time Projection Chamber (TPC) can provide accurate measurement of the three-dimensional trajectory of charged particles and distinguish between low object mass particles and dE/dx, so it is widely used in high-energy particle physics experiments. For example, in the Ring Positron Collider (CEPC) experiment, TPC became the detector of choice for the main track detector. In order to achieve...

The Circular Electron Positron Collider (CEPC) is proposed for Higgs boson research, and will includes several detectors, such as the Electromagnetic Calorimeter (ECAL), Hadronic Calorimeter (HCAL), and Muon detector. Silicon photomultiplier (SiPM) is widely used in these detectors for light conversion. This paper presents a prototype design of SIPAC (SiPM readout ASIC for calorimeter)....

AC-coupled Low Gain Avalanche Detector (AC-LGAD) based microstrip, achieving 30 ps timing resolution with a 100 µm pitch, is proposed for the OTK in CEPC. The inherent capacitance of AC-LGAD presents significant challenges for power optimization. To match the strip pitch, a LGAD Timing Readout Integrated Chip (LATRIC) integrating 128 channels with a height of less than 100 µm per channel is...

High-Energy Physics (HEP) experiments increasingly rely on complex ASICs, driving a growing need for flexible, programmable architectures. We present a RISC-V–based System-on-Chip (SoC) that serves as a versatile control and configuration hub for CEPC ASICs. The SoC integrates tiny_riscv, a lightweight 32-bit processor with a 3-stage pipeline, capable of executing C programs to manage...