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    Summer meeting 1

    → Europe/Zurich
    6/R-018 (CERN)

    6/R-018

    CERN

    20
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    For next week: Tobias ADT-AC dipole, Ewen NL MD, Barbara MCS, Andreas, Lukas (coup again), Matthew

    Michael Hoffer, HE correction systems

    distributed MQTs not so good -> check main quads

    Kmod: to run for IR4 the selection of quads must be manual in the Kmod gui

    C- and C- uncertainty. Compute various responses from modified f1001 according to uncertainties -> students.

    ######################

    Jaime, tune jitter in LHC

    Before non-lin corr: ~5e-5

    Check if 2017 data is after NL correction, wi/without xsing, check %.

    Take a good data set in NL MD, both AC dipole and ADT.

    ########################

    Lukas, coupling correction in ATS too strong, beta*=35cm.

    SVD cut seems to be the driver for large strength. moving from 0.01 to 0.015.

    To be checked if sign flipped in Gui correction expectation.

    AC dipole artifact not to be excluded.

    Strange bump in IR4... 

    There are no weights in the couplig corr -> to be implemented.

    iterative correction would fix all this. To be seen if implemented , backwards compatibility.

    Compare prediction to measurement after ! Next Friday.

    ##################

    Matthew, HARPY

    a bit weird results. ASk Niccolol

    Try measurements !

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

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