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    CEPC Calorimeter Weekly Meeting on TDR

    → Asia/Shanghai
    Jianbei Liu (University of Science and Technology of China), Yong Liu (Institute of High Energy Physics)
    Description

    Zoom connection information

      • 14:00 → 14:05
        Introduction and news 5m
        Speakers: Jianbei Liu (University of Science and Technology of China), Dr Yong Liu (Institute of High Energy Physics)
        2024_0605_CEPC_Calorimeters_TDR_To-do_List.pdf
      • 14:05 → 14:25
        Electronics, mechanics, physics and software: discussions on CEPC-TDR
        Conveners: Jinfan Chang (高能所), Manqi Ruan (IHEP), Shaojing 侯少静 (高能所), Sheng-Sen Sun (Institute of High Energy Physics)
      • 14:25 → 14:55
        CEPC calorimeter options: down select for CEPC-TDR
        Convener: Jianbei Liu (University of Science and Technology of China)
        • 14:25
          Plastic scintillator ECAL and HCAL 5m
          Speaker: Yunlong Zhang (University of Science and Technology of China)
        • 14:30
          Silicon ECAL and glass-RPC HCAL 5m
          Speaker: Haijun Yang (Shanghai Jiao Tong University)
        • 14:35
          Highly granular crystal/glass ECAL 5m
          Speaker: Dr Yong Liu (Institute of High Energy Physics)
          2024_0606_CEPC_Crystal_Calorimeter_Electronics_Discussions.pdf
          2024_0607_CEPC_CrystalCalo_Electronics_Requirements_Draft.pdf
        • 14:40
          Stereo crystal ECAL 5m
          Speaker: Huaqiao ZHANG (IHEP)
        • 14:45
          Glass HCAL 5m
          Speakers: Peng Hu (IHEP), Sen Qian (高能所)
        • 14:50
          Wrap-up 5m
          Speaker: Jianbei Liu (University of Science and Technology of China)
      • 14:50 → 14:53
        AOB 3m
        Speaker: All
      • 14:53 → 14:55
        Minutes 2m
        Speakers: Fangyi Guo, Dr Yong Liu (Institute of High Energy Physics)

        ## Date and Time
        * Participants
            * IHEP MB A420: Baohua Qi, Huaqiao Zhang, Dejing Du, Boxiang Yu, Yatian Fei, Jinfan chang, Fangyi Guo, Yong Liu
            * Remote on Zoom: Haoyu Shi, Jianbei Liu (chair), Haijun Yang, Weizheng Song, Junsong Zhang, Wei Wei, Tohru Takeshita, Qi Yan, Zhiyu Zhao, Yang Zhang, Hengne Li, Shaojing Hou, Shengsen Sun, Ji-yuan Chen, Quan Ji
        * New time arrangements: 14:00 - 16:00

        ## Beam-induced Backgrounds
        * Brief talk by Haoyu Shi
            * A summarised table: background types, Higgs/Z mode, noise estimates, radiation does
            * For several background types, ready for mass production
                * Pending on computing resources
                * Also depend on the detector geometry description in CEPCSW

        ## AHCAL Mechanics Design
        * First mechanics design for AHCAL: talk by Yatian Fei
            * 2 mm for 3 barrel segments along Z
            * 0.4 mm for 4 barrel segments along Z and also including 2-point constraints in phi-module
        * Discussions
            * AHCAL module assembly procedure -> 
            * Tolerances per layer -> area of absorber plates -> production precision

        ## Crystal  calorimeter mechanics design
        * Updated mechanics (schematics) of long-bar crystal calorimeter: talk by Shaojing Hou
            * (No simulation results of deformation)
        * Discussions
            *