________ 4th TLEP workshop _(EuCARD-AccNet)__

Europe/Zurich
60/6-015 - Room Georges Charpak (Room F) (CERN)

60/6-015 - Room Georges Charpak (Room F)

CERN

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Description
In line with the recent proposal for the update of the European Strategy of Particle Physics, we propose to launch a design study of the performance and feasibility of high-energy, high luminosity circular e+e- colliders. The main physics objective is the precise investigation of the properties of the Standard Model Higgs boson candidate with a mass of 126 GeV/c2 recently discovered at the LHC. This study best takes place at the maximum of the ZH production cross section, i.e., at a centre-of-mass energy around 240 GeV.

Equally important, the very high luminosities available would provide, within a few years, unprecedented statistics at the Z peak (~1012 Z decays), at the W pair threshold (>107W pairs), and at the top pair threshold, for outstanding precision measurements of quantities sensitive to new physics through electroweak radiative corrections, thereby testing the closure of the Standard Model.

The focus of the proposed design study is “TLEP”, a circular e+e- collider hosted in a new tunnel of 80 km circumference, with the long-term perspective of hosting a 80-100 TeV hadron collider (SHE-LHC). The centre-of-mass energy reach of TLEP is above the ttbar threshold (Ecm > 350 GeV) and the luminosity at the ZH cross-section maximum amounts to 5.1034 cm-2s-1 in each of the interaction regions, leading to two million Higgs bosons produced in five years for four experiments. Scaling to other tunnel circumferences will also be considered.

read more on the TLEP study web site
Participants
  • Alain Blondel
  • Alfredo Ferrari
  • Andre David
  • Benedetto Gorini
  • Emilio Meschi
  • Erk Jensen
  • Francesco Cerutti
  • Frank Zimmermann
  • Guenther Dissertori
  • Hector Garcia Morales
  • Humberto Maury Cuna
  • Jacques Payet
  • Jan Stark
  • Laurent Deniau
  • Luca Malgeri
  • Luisella Lari
  • m Koratzinos
  • Marco Zanetti
  • Maurizio Pierini
  • Patrick Janot
  • Patrizia Azzi
  • Qing Qin
  • Roy Aleksan
  • Serguei Ganjour
  • Uli Wienands
  • Viatcheslav Danilov
  • Witold Kozanecki
  • Thursday, 4 April
    • 09:00 13:00
      Physics
      Conveners: Alain Blondel (Universite de Geneve (CH)), Patrick Janot (CERN)
      • 09:00
        TLEP design study 25m
        Speaker: Dr Frank Zimmermann (CERN)
        Slides
      • 09:25
        Physics Overview 30m
        Speaker: Jonathan R. Ellis (CERN)
        Slides
      • 09:55
        Welcome and Introduction 10m
        Speaker: Steve Myers (CERN)
      • 10:05
        Precision Measurements, top and Higgs 30m
        Speaker: Patrick Janot (CERN)
        Slides
      • 10:35
        coffee break 25m
      • 11:00
        Precision Measurement, W and Z 30m
        Speaker: Alain Blondel (Universite de Geneve (CH))
        Slides
      • 11:30
        Detectors for e+e- and pp colliders (TBC) 25m
        Speaker: Emilio Meschi (CERN)
        Slides
      • 11:55
        Chinese Higgs Factory 30m
        Speaker: Qing QIN (IHEP)
        Slides
    • 13:15 18:30
      Machine
      Conveners: Alain Blondel (Universite de Geneve (CH)), Dr Frank Zimmermann (CERN), Marco Zanetti (Massachusetts Inst. of Technology (US))
      • 14:00
        Alpha_s precision measurement at TLEP(Z) 30m
        Speaker: Guenther Dissertori (Eidgenoessische Tech. Hochschule Zuerich (CH))
        Slides
      • 14:30
        Review of LHeC TDR 20m
        Speaker: Oliver Bruning (CERN)
        Slides
      • 14:50
        TLEP RF system 20m
        Speakers: Andy Butterworth (CERN), Dr Erk Jensen (CERN)
        Slides
      • 15:10
        Review of CLIC CDR 20m
        Speaker: Daniel Schulte (CERN)
        Slides
      • 15:30
        coffee break 25m
      • 15:55
        TLEP ring optics - first look and plan 25m
        Speaker: Bernhard Holzer (CERN)
        Slides
      • 16:20
        TLEP luminosity 20m
        Speaker: m Koratzinos (National Technical Univ. of Athens (GR))
        Slides
      • 16:40
        FLUKA simulations on shielding 30m
        Speaker: Alfredo Ferrari (CERN)
        Slides
      • 17:10
        TLEP vacuum system 25m
        Speakers: Marton Szakasz, Roberto Kersevan (CERN)
        Slides
      • 17:35
        TLEP cryo system 30m
        Speaker: Friedrich Haug (CERN)
        Slides
      • 18:05
        discussion 20m
    • 08:55 12:55
      Machine
      Conveners: Alain Blondel (Universite de Geneve (CH)), Dr Frank Zimmermann (CERN), Marco Zanetti (Massachusetts Inst. of Technology (US))
      • 09:00
        Is polarization possible in TLEP? 30m
        Speaker: Uli Wienands (S)
        Slides
      • 09:30
        Effect of cavity impedance for operation at high current & low beam energy 30m
        Speaker: Nicolas Frank Mounet (Ecole Polytechnique Federale de Lausanne (CH))
        Slides
      • 10:00
        coffee break 20m
      • 10:20
        Discussion and preparation of design study 55m
        Speaker: Dr Roy Aleksan (CEA/IRFU,Centre d'etude de Saclay Gif-sur-Yvette (FR))
      • 11:15
        Longitudinal beam-beam effects and transverse (in)stability 30m
        Speaker: Viatcheslav Danilov (ORNL)
        Slides
      • 11:45
        Injection system 30m
        Speakers: Dr Brennan Goddard (CERN), Dr Chiara Bracco (CERN)
        Slides