CEPC Physics and detector regular meeting

Wednesday 13 Dec 2017, 15:00 → 17:00 Asia/Shanghai

A415 (IHEP)

Attending: Gang Li, Huirong Qi, Tao Hu, Joao, Zhaoru, Haijun Yang, Liang Li

Introduction from Joao
1. We will have the CEPC Workshop in Rome, on May 24, 25 and 26 (Thurs - Sat)
2. For CDR, we will try to complete draft of each chapter by Jan 2018

TPC
They will upload the new CDR version by the end of this month, the results will use 3T.  However the interface text should be discussed with other group. They got the new electronic on this week. To uniform the system, they also  had a geometry conversation with simulation people. For some important issues, like cable cooling, power consumption, Joao will organize a meeting among TPC, silicon, Calorimeter and simulation, to make sure there is no obvious mistake, the methods is reasonable.

Muon
Now they are working working on efficiency study.  They need more check with simulation group, and put muon system into reconstruction level, get the new efficiency. The postdoc Jifeng is working on it.

Based on the comments from CDR, they will delete some section. They will try to give a new draft on next week, including all the modification. Now they are studying the new technology, but this part don't need to be put in this version, we can just treat it as a new sub-section.

CALO:
They need a conversation with simulation, they will have a discussion tonight.

 

15:00 → 15:20 Introduction

Speaker: Joao Guimaraes Costa

Slides CEPC-physics-detector-introduction-20171213.pdf

15:20 → 16:50 Quick CDR reports from conveners

15:20 Simulation and Physics

Speakers: LI Gang ( EPC.IHEP ), Mr Manqi Ruan (IHEP)

15:30 MDI

Speaker: Dr Hongbo ZHU (IHEP)

Slides MDI_Status_13_December.pdf

15:40 Silicon Vertex

Speaker: Prof. Qun OUYANG (IHEP)

15:50 Silicon Tracker

Speaker: Meng Wang (高能所)

16:00 TPC

Speaker: Dr Huirong Qi (Institute of High Energy Physics, CAS)

Slides Remarks_at_TPC_tracker_detector_20171213.pdf

16:10 Electromagnetic Calorimeter

Speakers: Haijun Yang (Shanghai Jiao Tong University) , Prof. Haijun Yang (Shanghai Jiao Tong University) , Dr Jianbei Liu (University of Science and Technology of China) , Prof. Tao HU (IHEP)

16:20 Hadronic Calorimeter

Speakers: Haijun Yang (Shanghai Jiao Tong University) , Prof. Haijun Yang (Shanghai Jiao Tong University) , Dr Jianbei Liu (University of Science and Technology of China) , Prof. Tao HU (IHEP)

16:30 Magnet

Speakers: Dr Feipeng NING Feipeng (高能所) , Mr Zian ZHU Zian (高能所)

16:40 Muon Detector

Speaker: Prof. Liang Li (Shanghai Jiao Tong University)

Muon:

1. P4:Signalefficiency>95%formuonpT>4GeVwith8layers

   physics reason?
   Liang said they need check
   compare with pre-CDR which is around 100%, what is the difference? What is the physics requirement for the parameters listed in P4.

2. Current simulation doesn’t consider reconstruction, we should get the reconstruction before CDR public. 3 months is enough for reconstruction based on cluster matching with generator. Liang will contact Manqi to teach new people for Arbor methods, and will have regular group meeting for it.

3. RPC and R_well are baseline. Other methods need feasibility; we can not put all the methods in CDR. We’d better write a justification for muon detector at the beginning of this chapter.