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    FCC-FS EPOL group and FCCIS WP2.5 meeting 5

    → Europe/Zurich
    Description

    The FCC technical and financial feasibility study comprises a work package (EPOL) on precision determination of the centre of mass energy at FCCee. using resonant depolarisation of the beams, in conjunction with precise measurement of the energy spread and other parameters using physics events in the detectors, and other beam diagnostics in particular to control the collision parameters. Specific equipment involves polarimeters for both beams, polarisation wigglers, and depolarising RF kickers. The possible mono-chromatization of the beams in view of a measurement of the e+ e- —> H (125) process will also be studied and special requirements investigated. 

    Short group meetings are foreseen at 16:30 on Thursday typically every two weeks. 

    FCC-FS EPOL group meeting
    Zoom Meeting ID
    63437787216
    Host
    Alain Blondel
    Alternative host
    Jacqueline Keintzel
    Useful links
    Join via phone
    Zoom URL
      • 1
        Welcome, Introduction
        Speakers: Alain Blondel (Universite de Geneve (CH)), Jorg Wenninger (CERN)
      • 2
        RF and energy loss effects
        Speaker: Jacqueline Keintzel (CERN)
        20220127_Keintzel_EPOL_Z_compMADX.pdf
      • 3
        Exploration of spin polarization simulations in the FCC-ee using Bmad
        Speakers: Felix Simon Carlier (EPFL), Tatiana Pieloni (EPF Lausanne), Yi Wu (EPFL - Ecole Polytechnique Federale Lausanne (CH))
        EPOL_pre_Yi.pdf
      • 4
        Exotic monochromatization schemes for FCC-ee
        Speaker: Dmitry Shatilov (Budker Institute of Nuclear Physics (RU))
        monochr_exotic.pdf
      • 5
        update on polarimeter precisions
        Speaker: Nickolai Muchnoi (Budker INP)
        EPOL.pdf
        FitResult4x.pdf
        FitResult.pdf

        Report with polarimeter description: http://jacow.org/eefact2018/papers/tupbb03.pdf 

        See "Spectrometer" section on p.159

      • 6
        Actions, agenda for next meetings