CEPC Calorimeter Weekly Meeting on TDR

Friday 1 Mar 2024, 09:00 → 11:00 Asia/Shanghai

Jianbei Liu (University of Science and Technology of China) , Yong Liu (Institute of High Energy Physics)

Zoom connection information

• ZOOM Meeting Link

• Meeting ID: 666 4623 8623

• Passcode: cepc-tdr

09:00 → 09:05 Introduction and news

Speakers: Jianbei Liu (University of Science and Technology of China) , Dr Yong Liu (Institute of High Energy Physics)

2024_0229_CEPC_Calo_Options_Input_Template.pdf

2024_0229_CEPC_Calo_Options_Input_Template.pptx

Calo Talk at CEPC Day (Feb. 28)

Minutes for Calo-Option Meeting (Feb. 23)

09:05 → 09:25 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)

09:05 Calorimeter electronics

Speaker: Jinfan Chang (高能所)

Electronics: clarify requirements for inputs

• Considerations start from data transfer: back-end electronics
  • Data throughput
• Front-end ASIC: (1) waveform sampling? or (2) Q-T only?
• Cost estimates
  • 1-ch vs multi-ch ASIC
• Need anything from the Electronics Team to help option down select?
  • Formulate Common requirements: e.g. waveform sampling (vs. data transmission speed)
• Better to have a list of specs to the Electronics Team

09:10 Calorimeter mechanics

Speakers: Quan JI, Shaojing 侯少静 (高能所)

2024_0229_Calorimeters_Dimensions_QuanJi.pdf

2024_0229_Calorimeters_Dimensions_QuanJi.pptx

20240301-ECAL机械-侯少静.pptx

讨论2.pptx

09:15 Calorimeter software

Speakers: Fangyi Guo, Sheng-Sen Sun (Institute of High Energy Physics)

09:20 Physics performance related to calorimeters

Speaker: Manqi Ruan (IHEP)

09:25 → 09:50 CEPC calorimeter options: down select for CEPC-TDR

Convener: Jianbei Liu (University of Science and Technology of China)

09:25 Plastic scintillator ECAL and HCAL

Speaker: Yunlong Zhang (University of Science and Technology of China)

09:30 Silicon ECAL and glass-RPC HCAL

Speaker: Haijun Yang (Shanghai Jiao Tong University)

2024-SiWECAL-SDHCAL-March22.pdf

09:35 Crystal and glass ECAL

Speakers: Huaqiao ZHANG (IHEP) , Dr Yong Liu (Institute of High Energy Physics)

09:40 Glass HCAL

Speakers: Peng Hu (IHEP) , Sen Qian (高能所)

09:45 Wrap-up

Speaker: Jianbei Liu (University of Science and Technology of China)

09:50 → 09:53 AOB

Speaker: All

2024_0304_CEPC_Calo_Options_Input_Template.pptx

09:53 → 09:55 Minutes

Speakers: Fangyi Guo, Dr Yong Liu (Institute of High Energy Physics)

• Electronics by Jinfan
  • Collect requirements as inputs: e.g. data throughput -> a list of specs
  • To formulate Common requirements: e.g. waveform sampling (vs. data transmission speed)
• Mechanics by Quan, Shaojing
  • Decided and implemented
    • Barrel length: 5.9m -> for comparison of all calorimeter options
    • ECAL: 28 R-Phi segments
    • ECAL+HCAL: both inside magnet
    • ECAL+HCAL: endcaps encompass barrel
  • Decided but to be updated/implemented
    • HCAL depth update: 1.08m -> 1.30m (to be confirmed by HCAL)
  • To be decided
    • HCAL: ? R-Phi segments -> not discussed
• Feedback on the TDR meeting arragment: Yong
  • 1 hour is toooo tight for discussions esp. on mechanics at this busy stage (many things not fixed yet..)
  • Option 1: extend this discussion to 1.5h ? -> This would affect TDR meeting at 10AM
  • Option 2: arrange internal discussions before the weekly meeting. Concise reports on status. -> Need to arrange another meeting...
  • Other better options?