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Status Report of Calorimeter Group: CEPC Physics and Detector Meeting

This report provides updates on the progress and development of various calorimeter systems for the CEPC experiment, including ECAL and HCAL for the Particle Flow Approach, Scintillator Tungsten Sandwich, Silicon Tungsten Sandwich, SDHCAL, DHCAL, Muon system, as well as topics like calibration, front-end readout system, power, cooling, and cost estimation.

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Status Report of Calorimeter Group: CEPC Physics and Detector Meeting

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  1. Status Report of the Calorimeter GroupTao Hu (IHEP) and Haijun Yang (SJTU)CEPC Physics and Detector MeetingSeptember 5, 2014

  2. TOC for CEPC-Calo pre-CDR2nd draft is ready for circulating • Introduction and general layout to calorimeters • ECAL for Particle Flow Approach • Scintillator Tungsten Sandwich - Zhigang Wang(IHEP) • Silicon Tungsten Sandwich – V. Balagura, J.-C Brient, V. Boudry (IN2P3) added • HCAL for Particle Flow Approach • SDHCAL (RPCs) – Ran Han (NCEPU), Imad LAKTINEH (IPNL) • DHCAL (RPCs) – Lei Xia (ANL/SJTU) • DHCAL (ThGEM) – Boxiang Yu (IHEP) • Muon system – Yuguang Xie (IHEP), Qinming Zhang (XJTU) • Calorimeter Calibration and Alignment (included in sub-detector option) • Front-End Readout System (included in sub-detector option) • Power and Cooling System (included in sub-detector option) • Cost Estimation (included in sub-detector option)

  3. Summary and Future Plan • CEPC pre-CDR (29pages for CALO, 8 pages for Muon) • DHCAL (ThGEM) – available (3 Institutions, 5 people) • SDHCAL (RPC) – available (2 Institutions, 4 people) • DHCAL (RPC) – available (3 Institutions, 5 people) • ECAL(SciW) – available (1 Institution, 2 people) • ECAL (SiW) – available (1 Institution, 3 people) • Muon system – available (2 Institutions, 2 people) • CEPC-Calo simulations (standalone) • DHCAL simulation, ECAL simulation • Using simulation studies to determine ECAL/HCAL geometry, sensors and absorbers, number of layers etc. key parameters and integrate in CEPC baseline detector design • Circulating and improving the draft of pre-CDR

  4. Talks for CEPC2014 workshop  Four contributed talks • 20’ Status report from Calo/Muon group (Boxiang Yu, IHEP) • 15’ SiW ECAL R&D (Vincent Boudry, CNRS/IN2P3) • 15’ Semi-digital Hadronic Calorimeter (Imad Laktineh, IPNL) • 30’ High resolution calorimeters (Lei Xia, ANL)

  5. Recent Progresses

  6. DHCAL based on THGEM • Boxiang Yu, Hongbang Liu, Daojing Hong et al. reported the current progress about • Detector setup • Geant fast simulations • Well THGEM：研制了井形THGEM。具有增益大，探测器结构更薄等特点。是CEPC数字量能器的候选者之一。 阻性THGEM 井型THGEM 阻性THGEM 井型THGEM

  7. DHCAL-THGEM Simulation 1x1cm2-50 Layers-100GeV π+

  8. DHCAL-THGEM Simulation • 2.24cm不锈钢吸收体，3mm灵敏层，设置阈值为0.4,1.4,5 • 2cm不锈钢吸收体，3mm灵敏层，设置阈值为0.1keV,1.4keV,5keV • 1cm不锈钢吸收体-0.4cm铅，3mm灵敏层，设置阈值为0.1,1.4,5 • 1cm不锈钢吸收体-0.5cm铅，3mm灵敏层，设置阈值为0.1,1.4,5 • 1 threshold vs 3 thresholds

  9. Status of ScECAL • Zhigang Wang report the current status of the ScECAL. The structure of the ScECAL Scintillator strip and SiPM The CEPC ScEcal is developing an ScEcal using scintillator strips read out with SiPM as the sensitive layers interleaved with tungsten plates as the absorber layers. The SiPM is a crucial device.

  10. Status of ScECAL PDE of BNU SiPM with Maximum and typical break voltage ,data taken from BNU report BNU SiPM: 1mm*1mm Hamamatsu MPPC: 1mm*1mm Pixel size:10um*10um Pixel size: 100um*100um 10000 pixel 100 pixel PDE of Hamamatsu MPPC, data taken from Hamamatsu data sheet The typical PDF of BNU is lower than Hamamatsu

  11. Pulse height spectrum distribution Temperature: 25 0C, Humidity: 30% Voltage: BNU SiPM: 27.5V Hamamatsu MPPC: 71.5V ADC Gain: 7.8×104 ~2×105(BNU report) Gain: 2.2×106

  12. CEPC-Muon Simulation – Yuguang Xie

  13. CEPC-Muon Simulation – Yuguang Xie Muon finding efficiency Muon-pion finding efficiency

  14. Backup slides

  15. The progress of Pre-CDR （DHCAL-THGEM) 今年的自然科学申请没有成功。

  16. About DHCAL (ThGEM) • Content • Introduction • Digital Hadronic Gas Calorimeter • The Active Layers • Energy Reconstruction & Calibration • Digital readout system • Cost of THGEM DHCAL • Reference

  17. About SDHCAL

  18. SDHCAL: beam test @ CERN The SDHCAL team involved in the construction and test of this module are based in France (IPNL in Lyon, LAPP in Annecy, LAL in Orsay and LLR in Palaiseau), Spain (CIEMAT in Madrid) and the universities of Louvain and Ghent in Belgium. 3-threshold works better for high energy jet SPS PS

  19. About DHCAL - Simulation

  20. About DHCAL - Simulation

  21. About ECAL - Simulation ECAL Simulation Geometry Tungsten: 2mm/3mm/4mm Plastic Scintillator: 2mm 40cm*40cm* 50 layer - Zigang Wang (IHEP) Sigma/Mean(25 GeV) = 3.28% (simulation) Sigma/Mean(25 GeV) = 3.48% (CALICE)

  22. About ECAL - Simulation • 2mmTungsten + 2mm Scintillator • Dependence of JER on No of layers.

  23. Muon pre-CDR • Introduction • Physics requirement • Baseline design • Technologies • RPCs or Scintillator strips • Cost estimation

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