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    Global corrections and MQT

    → Europe/Zurich
    6/R-012 - conference room (CERN)

    6/R-012 - conference room

    CERN

    40
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    PLans:

    Tomorrow measure from 60cm down to 40cm. Possibly try corrections at 40cm.

     

    Saturday night for injection: Ewen, Lukas, Piotr

    Saturday day for corrections: Piotr, Jaime, Andy, Tobias

    Friday day for measurements: all

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    Andy, Using MQTs

    Extracting MQT settings  and comparing betas with and without using MQTs. The difference is around 3% in horizontal (DQx=0.06). Very small in vertical (DQy=0.02). It seems that BPMs without MQTs are unaffected but the edges. Maybe easy to use the right tune to avoid the edge problem.

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

    Lukas, IR4

    Possible to correct IR4. Error is in the dispersion suppressor. It seems there is no local error on dispersion in IR4.

    Jaime releases the sbs with disp (backward propagation likely being wrong for not changing sign of Dpx).

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

    Software news, Jaime

    Model creation for PSB includes tune change, momentum, and ring now.

    S-b-S with dispersion coming up.

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

    Tobias, Dispersion from YASP compared to tbt

    Beam 1 or beam 2. Green line is horizontal from YASP. Blue from GUI.

    Single BPM with large discrepancy, to be circulated.

    Do we have a crossing angle? What is that 10mm bump?

    Tobias will compare actual dispersion.

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    There are minutes attached to this event. Show them.
      • 16:00 → 16:10
        Using MQTs 10m
        Speaker: Andy Sven Langner (Hamburg University (DE))
        Slides
      • 16:10 → 16:20
        IR4 local erros 10m
        Speaker: Lukas Malina (University of Oslo (NO))
      • 16:20 → 16:30
        Sofware news 10m
        Speaker: Jaime Maria Coello De Portugal - Martinez Vazquez (Ministere des affaires etrangeres et europeennes (FR))
      • 16:30 → 16:40
        Dispersion from YASP 10m
        Speaker: Tobias Hakan Bjorn Persson (CERN)
        Slides