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The 2022 International Workshop on the High Energy Circular Electron Positron Collider

Asia/Shanghai
A214 (IHEP)

A214

IHEP

Beijing, China
Shan Jin (ihep) , Jianchun Wang (IHEP)
Description

The 2022 international workshop on the high energy Circular Electron-Positron Collider (CEPC) will take place between October 24-28, 2022. The workshop will be operated mainly in online mode, hosted jointly by the Nanjing University and IHEP. Meeting rooms will be provided at IHEP for local participants.

The workshop intends to gather scientists around the world to study the physics potentials of the CEPC, pursue international collaborations for accelerator and detector optimization, deepen R&D work of critical technologies, and develop initial plans towards Technical Design Reports (TDR). The high energy Super proton-proton Collider (SppC), a possible upgrade of the CEPC, will also be discussed. Furthermore, industrial partnership for technology R&Ds and industrialization preparation of CEPC-SppC will be explored.

The workshop program consists of plenary sessions, parallel sessions and poster sessions. Presentations include conveners' selection from the abstract submissions and invitational ones. The workshop encourages participation, especially from graduate students and junior postdocs. Top posters will receive awards, selected through a vote by the SPC members, the conveners and the local organizers.

Uploaded Documents
Participants
  • Abdelkrim ZEGHARI
  • Adelina D'Onofrio
  • Ahmed Faqihi
  • Akira Yamamoto
  • Alan Price
  • Alexander Karlberg
  • Ande Ma
  • Andre Sailer
  • Andrea Pareti
  • Andreas Kronfeld
  • Andreas Loeschcke Centeno
  • Andrey Abramov
  • Antoine Chance
  • Anton Bogomyagkov
  • Ao Feng
  • Arthur Bolz
  • Arthur Moraes
  • ARYA EYYAPPALLY RETHEESHAN
  • Atif Rahman Alvi
  • Ayres Freitas
  • Baohua Qi
  • Barry Barish
  • Ben Page
  • Benno List
  • Bin Wang
  • Bin Yan
  • Bobae Kim
  • Bowen Wang
  • Brian Foster
  • Bruce Mellado
  • Brunella D\'Anzi
  • Cai Meng
  • Carlo Pagani
  • Changzheng YUAN
  • Chengtai Tan
  • Christophe Grojean
  • Da Xu
  • Daheng Ji
  • Danning Liu
  • Dazhang Li
  • Dejing Du
  • Dennis Li
  • dexing miao
  • Donghyun Kim
  • Dongwoon KIM
  • Dou WANG
  • Ece Asilar
  • Eduardo Picatoste
  • Eduardo Picatoste
  • El Abassi Abderrazaq
  • EL Abassi Abderrazaq
  • Eman Gamal Ali Hasan Elgizawi
  • Eva Montbarbon
  • Fangyi Guo
  • Fatima Bendebba
  • Federica Cuna
  • Feipeng NING
  • Feng Wang
  • Francesco Grancagnolo
  • Frank Gaede
  • Freddy Poirier
  • Gang CHEN
  • Gang Li
  • Gang LI Gang(EPD.IHEP)
  • Geng Geng
  • GHALIB UL ISLAM
  • Gian-Franco Dalla Betta
  • Giovanni Cavallero
  • Giovanni Stagnitto
  • Gregorio Bernardi
  • Guang ZHAO
  • Guk Cho
  • Guy Wilkinson
  • Hafiz Faizan Elahi
  • Haifeng Li
  • Haijun Yang
  • Hammad Rasheed
  • Hanhua Cui
  • Hanying Xiong
  • Haocheng Xu
  • Haoyu SHI
  • Hideki Okawa
  • Hirak Kumar Koley
  • Hiroyuki Nakayama
  • Hongbo Zhu
  • Hongjuan Xu
  • Hongjuan ZHENG Hongjuan
  • Hongping Jiang
  • Hongwei Zhao
  • Hongyu Zhang
  • Houbing Jiang
  • Hua Pei
  • Hua-Xing Chen
  • Huangchao Shi
  • Huaqiao ZHANG
  • HuaXing Zhu
  • Huayang Song
  • Huiping GENG Huiping
  • Huirong Qi
  • Hwi Dong YOO
  • Iacopo Vivarelli
  • Ian Shipsey
  • imad laktineh
  • Iryna Chaikovska
  • Ivan Morozov
  • Ivan Peric
  • Ivan Smiljanić
  • Jacqueline Keintzel
  • Javier Aparisi Pozo
  • Jean-Claude Brient
  • Jerome Baudot
  • Jia Liu
  • Jiabin Wang
  • Jiamin Hong
  • Jian Zhang
  • Jian-Ming Shen
  • Jianbei Liu
  • Jianchun Wang
  • Jiang Guangyu
  • Jiayin Gu
  • Jibo HE
  • jie feng
  • Jie GAO
  • Jike Wang
  • Jin Min Yang
  • Jin Wang
  • Jing ZHANG
  • Jingbo Ye
  • Jingru Zhang
  • jingui zou
  • Jingyu Tang
  • Jinhui Chen
  • Jinrui Shi
  • Jinyi Sun
  • Jiuqing Wang
  • Jiyuan Zhai
  • Joao Guimaraes da Costa
  • Juan Wang
  • Jun Guo
  • Jun He
  • JUNHUI YUE
  • Junmou (俊谋) Chen (谌)
  • Jérémie Bauche
  • Kai Ma
  • Kai Yi
  • Katja Krueger
  • Ke-Pan (柯盼) Xie (谢)
  • Kei Yagyu
  • Kentarou Mawatari
  • Krzysztof Mekala
  • Kyuyeong Hwang
  • Lei Zhang
  • li rong
  • Lia Lavezzi
  • Libo LIao
  • Liming Zhang
  • Lin Guo
  • Ling Zhao
  • Lingfeng Li
  • Liwen Yu
  • Lorenzo Calibbi
  • Lu Yanhua
  • Luping Li
  • Maarten van Dijk
  • Makoto Tobiyama
  • Manqi RUAN
  • Marco Ferrero
  • Marco Poli Lener
  • Maria Enrica Biagini
  • Marianna Fontana
  • marina artuso
  • Marius Maehlum Halvorsen
  • Martin Boulais
  • Martin Duy Tat
  • Martino Gagliardi
  • Masashi Aiko
  • Massimo Caccia
  • Mei LI
  • Mei Yang
  • Meng Wang
  • Menglin Wang
  • Michael Hofer
  • Michał Iglicki
  • Mihir Patel
  • Mikhail Zobov
  • MING QI
  • Minggang Zhao
  • Mingjie Feng
  • Mingrui Zhao
  • Mingshui CHEN
  • Mingyi Dong
  • minxian LI
  • Moamen Saleh
  • Mohamed Krab
  • Mohamed Younes Sassi
  • Mourad Maroc Hidaoui
  • Munawar Iqbal
  • MUSTAPHA BIYABI
  • Nasir Mehdi Malik
  • Nicola De Filippis
  • Nicolas Fourches
  • Nikolay Chepurnoy
  • Noman Habib
  • Paolo Giacomelli
  • Paolo Nason
  • Paul Colas
  • Peng Hu
  • Peter Kluit
  • Peter McKeown
  • Peter Svihra
  • Philipp Windischhofer
  • Qian Song
  • Qibin Liu
  • Qimin Jiang
  • Qing-Hong Cao
  • Qingjin XU
  • Quan JI
  • Reham Aly
  • Reynaldi Gilang Mulyawan
  • Roberto Guida
  • Rogelio Tomas Garcia
  • Roman Lietava
  • Roman Lietava
  • Roman Pöschl
  • Ron Settles
  • rongtie Huang
  • Roy Cruz
  • Ruiyan Guo
  • Saad El Farkh
  • Said Elhouari
  • Sanghyun Ko
  • Sen Qian
  • Sen Yue
  • Seungkyu Ha
  • Sha BAI
  • Shan Cheng
  • Shanhong Chen
  • Shanzhen Chen
  • Shaopeng Li
  • Sheng Dong
  • Sheng-Hui Zeng
  • Shengdu Chai
  • Shengsen Sun
  • shibo xia
  • Shohei Nishida
  • Shu Li
  • Shuangshi Fang
  • Shudong Wang
  • Shuiting Xin
  • Shuqi Li
  • Shuqi Sheng
  • Siyuan Song
  • Song Jin
  • Suen Hou
  • sun zheng
  • Sungwon Kim
  • Sylvain Chapeland
  • Sébastien Descotes-Genon
  • Takaaki Nomura
  • Tania Robens
  • TAO Chen
  • Tao LIN
  • Tao Liu
  • Tao Wu
  • Thomas Biekoetter
  • Tiange Li
  • Tianmu Xin
  • Tianya WU
  • Tongsheng(桐生) Tang(汤)
  • Tongzhi Yang
  • Vasiliki Mitsou
  • Vladimir Makarenko
  • Vladimir Rekovic
  • Wei Li
  • Wei Lu
  • Wei WANG
  • Wei WEI
  • Weidong Li
  • Weiguo Lu
  • Weimin Song
  • Weiming An
  • Weizheng Song
  • Wen 康文
  • WENXING FANG
  • Wuernisha Yimingniyazi
  • Xiang Chen
  • Xiangzhen ZHANG
  • Xiao Liu
  • Xiao Yang
  • xiao zhao
  • Xiaohao Cui
  • Xiaohu SUN
  • XiaoJie 啸捷 Jiang 姜
  • Xiaojun Bi
  • XiaoLong Wang
  • Xiaolong Wang
  • Xiaomei Zhang
  • Xiaoping Li
  • Xiaoping Wang
  • Xiaorui Wong
  • Xiaoze Tan
  • Xiaozhong Huang
  • Xin Guan
  • Xin Guan
  • Xin Shi
  • Xin Xia
  • Xinchou LOU
  • Xingtao Huang
  • Xinlu Xu
  • Xinpeng MA
  • Xu DONG
  • xu gao
  • XuAi ZHUANG
  • Xuan Chen
  • Xuehua Zhang
  • Xuehui Wu
  • Xuekang Li
  • Xuewei Jia
  • Xuhui Jiang
  • Xuliang Zhu
  • Yan-Qing Ma
  • Yang Ma
  • Yang Zhang
  • Yang ZHOU
  • Yaquan FANG Yaquan
  • Ye YUAN
  • YI LIU
  • Yilak Alemu Abbo
  • Yiming 一鸣 Li 李
  • Yin-Fa Shen
  • Yingshun Zhu
  • yiwei WANG
  • Yong Du
  • Yong Liu
  • Yongchao Zhang
  • Yongke ZHAO
  • Yoshinobu Unno
  • Yu Gao
  • Yu Zhang
  • Yu Zhang
  • Yuan-Hann Chang
  • yudong LIU
  • Yue Chang
  • yue sun
  • Yuehong Xie
  • Yuexin Wang
  • yufeng wang
  • Yugen Lin
  • Yuhui Li
  • Yukihiro Kato
  • Yukun Shi
  • Yulong Liu
  • Yun Eo
  • Yunlong Zhang
  • Yuting Wang
  • Yuzhi Che
  • Zexuan Sui
  • Zhan Li
  • Zhan SHI
  • Zhandong Zhang
  • Zhanjun Zhang
  • Zhe DUAN
  • Zhefei Tian
  • Zhehao Hua
  • Zhen Xu
  • Zhenyu ZHANG
  • Zhi Deng
  • Zhiyang Yuan
  • Zhiyu Zhao
  • Zhongjian MA
  • Zhuoni Qian
  • Zijun Xu
  • Zilin Chen
  • Zusheng Zhou
  • 东林 章
  • 伟 刘
  • 伟 苏
  • 伟 邹
  • 信 佘
  • 信莲 吴
  • 全 邹
  • 凯 朴
  • 刘 瑞
  • 刘琴琴 刘
  • 圣宜 汪
  • 声权 王
  • 大鹏 尹
  • 妞 苏
  • 子佳 李
  • 宁 陈
  • 家琳 李
  • 少哲 王
  • 峻钰 张
  • 帅毅 刘
  • 心瑗 孙
  • 志永 卢
  • 志龙 张
  • 恒宇 汪
  • 斌 陈
  • 新宇 邹
  • 昊 ZHANG
  • 昌龙 许
  • 明伦 陈
  • 本富 陈
  • 杰 奉
  • 梁志均 LIANG Zhijun
  • 梦瑶 刘
  • 樊 云云
  • 波 刘
  • 玉包 张
  • 王 秀荣
  • 王 立强
  • 王 雨颉
  • 瑞林 朱
  • 相起 田
  • 腾 李
  • 艺 万
  • 董毅 董
  • 轶君 史
  • 金六 苏
  • 锦闲 张
  • 陈 洋
  • 雷(Lei) 张(Zhang)
  • 鹏 沙
  • 龙 曾
    • 10:00 AM 12:00 PM
      Accelerator: 4 C305

      C305

      IHEP

      Convener: Prof. Younguk Sohn (Pohang University of Science and Technology)
    • 10:00 AM 12:00 PM
      Calorimeter: 1 A415

      A415

      IHEP

      Convener: Gabriella Gaudio (INFN Pavia)
      • 10:00 AM
        A novel high granularity crystal electromagnetic calorimeter 15m

        Driven by the physics program of precise measurement of properties of the Higgs boson, the W and Z bosons, as well as the top quark, future lepton colliders require unprecedented jet energy resolution on their calorimetry systems. Based on the particle- ow paradigm, a novel highly gran- ular crystal electromagnetic calorimeter (ECAL) with excellent three-dimensional spatial resolu- tion as well as good energy and time resolution is proposed to address major challeng es from jet reconstruction and to achieve the optimal EM energy resolution of around 2 − 3 %/ E(GeV ) with the homogenous structure. Comprehensive R&D e orts have been carried out to evaluate the potential and requirements of the crystal ECAL from sensitive detection units to the full sub- detector system. e requirements on crystal candidates, photon sensors, and readout electronics are parametrized and quanti ed in Geant4 full simulation. Hardware R&D activities on the crystal and silicon photomultipliers (SiPMs) are performed to characterize the typical response of basic de- tector units and to improve the simulation results. e physics performance of the crystal ECAL has been studied with the particle- ow algorithm “ArborPFA” which is being optimized. More- over, the development of small-scale detector modules is underway for future beam tests to study the performance for EM showers.

        Speaker: Baohua Qi (IHEP)
      • 10:15 AM
        Development and beamtest of the CALICE PFA Calorimeter Prototypes 30m

        A highly granular electromagnetic calorimeter has been designed within the CALICE collabora- tion for precision measurements of Higgs and electroweak physics at future lepton collider ex- periments, including the Circular Electron Positron Collider (CEPC). Scintillator strips and silicon photomultipliers (SiPMs) are instrumented as sensitive layers and tungsten-copper alloy plates as absorber. Scintillator strips are individually wrapped with ESR foil and directly coupled with SiPMs. A prototype with 32 sampling layers and over 6700 channels (around 600 × 600 × 400 mm3 in dimensions) has been constructed and commissioned in 2020, followed by long-term cosmic-ray tests in 2021 for quantitative studies on the key performance. ere will be a dedicated beam test at CERN SPS in October 2022. is talk will cover key aspects in the prototype development, com- missioning as well as selected results of cosmic ray tests. e latest status on the CERN beam test will also be presented.

        Speaker: Yunlong Zhang (University of Science and Technology of China)
      • 10:45 AM
        Research progress of glass scintillator of HCAL 15m

        Based on the particle- ow paradigm, a novel hadronic calorimeter (HCAL) with high granularity is proposed to address major challenges from precision measurements of jets at future lepton collider experiments, such as the Circular Electron Positron Collider (CEPC). Compared with the baseline designs, a new design scheme based on the glass scintillator (GS-HCAL) aims for further signif- icant improvements of the hadronic energy resolution as well as the particle- ow performance, especially in the low energy region (typically below 10 GeV for major jet components), with a notable increase of the energy sampling fraction and hadronic response compensation due to its high density and doping of neutron-sensitive elements. e R&D group has been established to promote the investigation of high-performance glass scintillators with a density up to 6 g/cm3 and a light yield of 1500 ph/MeV. Simultaneously, physics benchmark potentials of GS-HCAL in an optimized setup are explored in the CEPC so ware framework and standalone simulation. In this contribution, the latest R&D progress of glass scintillators and optimization of key parameters will be introduced.

        Speaker: Peng Hu (IHEP)
      • 11:00 AM
        Cluster timing and leakage in time at the CEPC baseline Calorimeter 15m

        We discuss the time spectra of showers from photons, muons, and charged pions, simulated in the CEPC electromagnetic calorimeter (ECAL). We present an algorithm for timing reconstruc- tion in highly granular calorimeters (HGC). Assuming the intrinsic hit time resolution measured by the CMS collaboration is accessible, the particle Time-of-Flight (ToF) can be measured with a resolution of 5 ∼ 20 ps for electromagnetic (EM) showers and 80 ∼ 160 ps for hadronic show- ers above 1 GeV. e ToF resolution depends linearly on the timing resolution of a single silicon sensor and improves statistically with increasing incident particle energy. A clustering algorithm that vetos isolated hits improves ToF resolution. In addition, hadronic showers include extremely slow components. In Z->qq events, there is around 1% (10%) ECAL (HCAL) energy deposited a er one microsecond, which may leak out from the triggering window of the corresponding event and pile-up into the a er events.

        Speaker: Yuzhi Che (IHEP)
      • 11:15 AM
        Study on the Dynamic Range of SiPMs with Large Pixel Number 15m

        The future Circular Electron-Positron Collider (CEPC) is a large-scale experimental facility, which aims to accurately measure the Higgs boson, electroweak physics and avor physics. For the detec- tor system in CEPC, a highly granular crystal electromagnetic calorimeter is proposed to achieve an EM energy resolution of less than 3%. It is a homogenous structure with long crystal scintilla- tor bar as active material. e energy deposition range in one crystal bar is about 500keV ̃10GeV. SiPM, as the preferred photon detector in crystal bar ECAL, should cover a dynamic range of at least 50000 photons. e response calibration for SiPMs with such a large dynamic range is chal- lenging. We have developed an experiment which used laser and PMT as light source and scaler respectively. By adjusting the bias voltage, we expanded the linear region of the PMT to cover the whole response range of SiPMs. e nal response curves are reasonable. We have also built a simulation model to describe them. Improvements to this experiment are still ongoing, including design of large dynamic range PMT, optimization of SiPM electronics and light source.

        Speakers: Zhiyu Zhao (SJTU/TDLI) , Zhiyu Zhao (TDLI/SJTU)
    • 10:00 AM 12:00 PM
      Flavor physics: 1 A511

      A511

      IHEP

      Conveners: Liming Zhang (Tsinghua University) , Lingfeng Li (Brown University) , Lorenzo Calibbi (Nankai University) , Tao Liu (The Hong Kong University of Science and Technology)
      • 10:00 AM
        Experimental overview 30m
        Speaker: Yuehong Xie (Central China Normal University)
      • 10:30 AM
        The B anomalies and how to test them at future colliders 30m
        Speaker: Wolfgang Altmannshofer (UC Santa Cruz)
      • 11:00 AM
        Exclusive Ds* weak decay and the experiment potential 30m
        Speaker: Shan Cheng (Hunan University)
      • 11:30 AM
        Hadron spectroscopy and exotic states 30m
        Speaker: Feng-Kun Guo (ITP, CAS)
    • 1:30 PM 3:30 PM
      Accelerator: 5 C305

      C305

      IHEP

      Convener: Anton Bogomyagkov (BINP)
    • 1:30 PM 3:30 PM
      Calorimeter: 2 A415

      A415

      IHEP

      Convener: jean-claude Brient (LLR -IPP CNRS)
    • 1:30 PM 3:40 PM
      Flavor physics: 2 A511

      A511

      IHEP

      Conveners: Liming Zhang (Tsinghua University) , Lingfeng Li (Brown University) , Lorenzo Calibbi (Nankai University) , Tao Liu (The Hong Kong University of Science and Technology)
      • 1:30 PM
        Exploiting time evolution in rare decays of Bd and Bs mesons 30m
        Speaker: Sébastien Descotes-Genon (IJCLab (CNRS/Université Paris-Saclay))
      • 2:00 PM
        Explanation of W boson mass anomaly and flavor physics in a model with extra U(1) gauge symmetry 30m
        Speaker: Takaaki Nomura (Sichuan University)
      • 2:30 PM
        Principle of maximum conformality and its application to the determination of QCD coupling 30m
        Speaker: Jian-Ming Shen (Hunan University)
      • 3:00 PM
        Semileptonic b Decays at Future Z Factories 20m
        Speaker: Xuhui Jiang (The Hong Kong University of Science and Technology)
      • 3:20 PM
        Prospects for B0(s)→π0π0 and B0(s)→ηη modes and corresponding CP asymmetries at Tera-Z 20m
        Speaker: Yuexin Wang
    • 3:30 PM 4:00 PM
      Coffee break 30m A214

      A214

      IHEP

      Beijing, China
    • 4:00 PM 6:00 PM
      Accelerator: 6 C305

      C305

      IHEP

      Convener: Maria Enrica Biagini (INFN-LNF)
    • 4:00 PM 6:00 PM
      Calorimeter: 3 A415

      A415

      IHEP

      Convener: Hwi Dong YOO (Yonsei University)
    • 4:00 PM 6:30 PM
      Flavor physics: 3 A511

      A511

      IHEP

      Conveners: Liming Zhang (Tsinghua University) , Lingfeng Li (Brown University) , Lorenzo Calibbi (Nankai University) , Tao Liu (The Hong Kong University of Science and Technology)
    • 10:00 AM 12:00 PM
      Accelerator: 10 C305

      C305

      IHEP

      Convener: Xueqing Yan (PKU)
      • 10:00 AM
        Accelerator Activities at Tsinghua University 20m
        Speaker: Yingchao Du
      • 10:20 AM
        Progress on advanced laser development and plasma based accelerator applications in Tsinghua and BAQIS 20m
        Speaker: Wei Lu (Tsinghua University)
      • 10:40 AM
        Optimal beam-loading for two bunch plasma wakefield accelerator 20m
        Speaker: Weiming An (Beijing Normal University)
      • 11:00 AM
        Plasma accelerator physics issues 20m
        Speaker: Ming Zeng (Tsinghua University)
      • 11:20 AM
        On polarimeter study for CEPC 20m
        Speaker: Shanhong Chen
    • 10:00 AM 12:11 PM
      PID and other technologies: 2 A415

      A415

      IHEP

    • 10:00 AM 12:05 PM
      QCD A511

      A511

      IHEP

      • 10:00 AM
        QCD needs for e+e- precision physics 25m
        Speaker: Ayres Freitas (University of Pittsburgh)
      • 10:25 AM
        New analyses of event shape observables and the determination of QCD $\alpha_s$ running behavior in perturbative domain 25m

        We give comprehensive analyses for event shape observables in electron-positron annihilation by using the Principle of Maximum Conformality (PMC) which is a rigorous scale-setting method to eliminate the renormalization scheme and scale ambiguities in perturbative QCD predictions. Conventionally the renormalization scale is simply fixed to the center-of-mass energy $\sqrt{s}$, and only one value of the QCD coupling at the single scale $\sqrt{s}$ can be extracted from event shape observables. The PMC renormalization scales are determined by absorbing the non-conformal contributions. The resulting PMC scales change with event shape kinematics, reflecting the virtuality of the underlying quark and gluon subprocess. The PMC scales thus yield the correct physical behavior of the scale and the PMC predictions agree with precise experimental measurements. More importantly, we can precisely determine the running of the QCD coupling constant $\alpha_s(Q^2)$ over a wide range of $Q^2$ in perturbative domain from event shape distributions measured at a single center-of-mass energy $\sqrt{s}$.

        Speaker: 声权 王 (贵州民族大学)
      • 10:50 AM
        Heavy-quark-pair production at lepton colliders at NNNLO in QCD 25m

        We compute the total cross section of heavy-quark-pair production in 𝑒+𝑒− annihilation mediated by a virtual photon at the next-to-next-to-next-to-leading order (NNNLO) in Quantum Chromodynamics. The result is expressed as a piecewise function defined by several deeply expanded power series. The result significantly reduces the theoretical uncertainty. For example, for a collision energy of 500GeV, the scale dependence has been reduced from 0.72% at the next-to-next-to-leading order (NNLO) to 0.15% at the NNNLO, which meets the request by future lepton colliders.

        Speaker: Xiang Chen (Peking University)
      • 11:15 AM
        Amplitude Bootstrap of The Energy-Energy Correlation in QCD 25m

        Energy-energy correlation (EEC) has been studied for almost 40 years, with its analytical calculation only being done quite recently using integration-by-parts (IBP) identities. We present a bootstrap strategy to calculate the EEC up to the next-to-leading order (NLO) correction by crafting an ansatz based on the colour structure of the QCD amplitudes and the Symbols of the master integrals relevant for the 𝛾∗→𝑞𝑞¯𝑔 process, which we impose self-consistent constraints to reduce the ansatz's parameters. We expect that symmetry of √z→−√z argument, the end-point kinematics, and colour structure of the QCD master integrals can constrain the ansatz significantly. The results would be presented in terms of classical polylogarithms.

        Speaker: Reynaldi Gilang Mulyawan (University of Indonesia)
      • 11:40 AM
        A new method of extracting the strong coupling constant from energy correlators 25m

        The energy correlators measure the pattern of the energy deposition in detectors. The collinear limit, where the angle between the detectors approaches zero, is of particular interest for describing the substructure of jets produced at colliders. By utilizing our factorization theorem and calculating the required ingredients, we perform the resummation of the logarithmically enhanced terms for the projected three-point energy correlator in the collinear limit through to NNLL by renormalization group evolution.

        Speaker: Zhen Xu (Zhejiang University)
    • 1:30 PM 3:30 PM
      Accelerator: 11 C305

      C305

      IHEP

      Convener: Jie GAO (IHEP)
      • 1:30 PM
        Alignment and installation logistics 20m
        Speaker: Xiaolong Wang (高能所)
      • 1:50 PM
        CEPC siting and civil construction preparation (Qinhuangdao, Changchun) 20m
        Speaker: Xiao Yu
      • 2:10 PM
        CEPC siting and civil construction preparation (Huzhou) 20m
        Speaker: Ke Huang
      • 2:30 PM
        CEPC siting and civil construction preparation (Changsha) 20m
        Speaker: zhiji li (Msdi)
      • 2:50 PM
        DeepC Electronic Documentation system for CEPC 20m
        Speaker: Ke Huang
      • 3:10 PM
        Flash Radiotheraphy with CEPC synchrotron radiation 20m
        Speaker: Jike Wang (Wuhan University)
    • 1:30 PM 3:30 PM
      Physics Beyond the SM: 1 A511

      A511

      IHEP

      Conveners: Bruce Mellado (University of the Witwatersrand) , Fa Peng Huang (Sun Yat-Sen (Zhongshan) University) , XuAi ZHUANG (高能所) , Yu Gao
      • 1:30 PM
        Global fit of 2HDM within GAMBIT under future Higgs precision measurements 30m
        Speaker: 伟 苏 (Sun Yat-Sen University)
      • 2:00 PM
        Identifying CP-odd component in Higgs boson 30m
        Speaker: 昌龙 许 (school of physics Peking Uniersity)
      • 2:30 PM
        Monojet search for heavy neutrinos at future Z-factories 30m
        Speaker: Yin-Fa Shen (Huazhong University)
      • 3:00 PM
        Electroweak Phase Transition in 2HDM under Higgs, Z-pole, and W precision measurements 30m
        Speaker: Huayang Song (Institute of Theoretical Physics)
    • 1:30 PM 3:30 PM
      TDAQ and Online: 1 A420

      A420

      IHEP

      Conveners: Martino Gagliardi (University and INFN, Torino Italy) , Paolo Durante (CERN) , Zhen-An LIU (IHEP)
      • 1:30 PM
        Overview of the ALICE trigger system 30m

        ALICE (A Large Ion Collider Experiment) is one of the four main LHC experiments and is optimised to study heavy ion collisions.
        The ALICE detectors and readout system have undergone a major upgrade to increase the data acquisition rates to the required level.
        The integrated luminosity is expected to be increased by a factor of 100 by increasing the readout rate to 50 kHz for Pb-Pb and to 1 MHz for pp collisions.
        A novel trigger and timing distribution system is implemented based on Passive Optical Network and GigaBit Transceiver technology.
        To assure backward compatibility, a triggered mode based on RD12 TTC technology is kept and re-implemented under the new Central Trigger System. A new universal ALICE Trigger Board based on the Xilinx Kintex Ultrascale FPGA has been designed that can function as a Central Trigger Processor (CTP), Local Trigger Unit (LTU), and monitoring interface.

        Speaker: Roman Lietava (University of Birmingham)
      • 2:00 PM
        The new LHCb GPU trigger 30m

        From 2022 the LHCb experiment will use a triggerless readout system collecting data at an event rate of 30 MHz and a data rate of 4 Terabytes/second. A software-only High Level Trigger will enable unprecedented flexibility for trigger selections. During the first stage (HLT1), track reconstruction and vertex fitting for charged particles enable a broad and efficient selection process to reduce the event rate to 1 MHz. Tracking and vertexing at 30 MHz represents a significant computing challenge, and LHCb utilizes the inherent parallelism of the triggering process to meet throughput requirements with GPUs. A close integration with the DAQ and event building allows for a particularly compact system, with the GPUs hosted in the same servers as the FPGA cards receiving the detector data, which reduces the network to a minimum. This architecture also inherently eliminates latency considerations, allowing GPUs to be used despite the very high required throughput. We review the software and hardware design of this system, reflect on the challenges of developing for heterogeneous architectures, discuss how it meets LHCb’s performance requirements, and show the commissioning status from LHC Run 3.

        Speaker: Marianna Fontana (LPNHE (Paris))
      • 2:30 PM
        The CMS Muon Trigger 20m
        Speaker: Ece Asilar (Hanyang University)
    • 3:30 PM 4:00 PM
      Coffee break 30m A214

      A214

      IHEP

      Beijing, China
    • 4:00 PM 6:00 PM
      Accelerator: 12 C305

      C305

      IHEP

      Convener: Carlo Pagani (INFN-MI)
    • 4:00 PM 6:00 PM
      PID and other technologies: 3 A415

      A415

      IHEP

    • 4:00 PM 6:00 PM
      Physics Beyond the SM: 2 A511

      A511

      IHEP

      Conveners: Bruce Mellado (University of the Witwatersrand) , Fa Peng Huang (Sun Yat-Sen (Zhongshan) University) , XuAi ZHUANG (高能所) , Yu Gao
    • 4:00 PM 6:00 PM
      TDAQ and Online: 2 A420

      A420

      IHEP

      Conveners: Fabrice Le Goff (CERN) , Zhen-An LIU (IHEP)
      • 4:00 PM
        Overview of the Phase 2 upgrade for CMS Trigger and DAQ 30m
        Speaker: Vladimir Rekovic (Vinca Inst. of Nucl. Sciences)
      • 4:30 PM
        ATLAS DAQ Outlook 25m
        Speaker: Matias Bonaventura (CERN)
      • 4:55 PM
        The new ALICE DAQ system for LHC Run 3 20m

        ALICE (A Large Ion Collider Experiment) is a heavy-ion detector studying the physics of strongly interacting matter and the quark-gluon plasma at the CERN LHC (Large Hadron Collider). During the second long shut-down of the LHC, the ALICE detector was upgraded to cope with an interaction rate of 50 kHz in Pb-Pb collisions, producing in the online computing system a sustained input of 3 TB/s.
        The new data-acquisition system consists of 200 readout nodes, collecting the data transferred from over 8000 detector links to PCs memory by dedicated PCI boards.
        These machines also perform some initial data processing tasks, like compression and data quality monitoring, before sending data over an Infiniband network to aggregate and handle the full detector events in a dedicated online processing farm.

        Speaker: Sylvain Chapeland (CERN)
      • 5:15 PM
        The new ALICE operational logbook for LHC Run 3 15m

        The ALICE experiment at CERN's Large Hadron Collider benefited from a major upgrade during the Long Shutdown 2 (2018 - 2022) which will generate up to 27 Tb/s of data from the detectors during the Runs 3 and 4. The update includes a redesign of the computational system, now named O2 (Online-Offline) and a new suite of web application GUIs which will be used by multiple teams and operators in the control room of the experiment 24 hours a day. Thus the new GUI suite includes a new tool named Bookkeeping, whose main purpose is to keep track of the experiment and provide a history state of the system at any point in time.
        Bookkeeping allows users to manually insert system updates which then can be filtered and retrieved to quickly access the information they are looking for. Moreover, it provides the means to other systems to enable them to automatically store and retrieve data. Based on the input, it builds global and individual statistics about the system performances which in turn helps improving the overall efficiency of the experiment.
        The provided UI and API use modern web technologies and are based on a shared web framework developed in-house, to ensure the application is robust enough to fill the needs of Run 3 and Run 4 while being easily maintained and enhanced.
        This presentation describes the Bookkeeping functionalities, the purpose they serve and the means that have been put in place to fulfill them.

        Speaker: Martin Boulais (CERN)