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LumiDays 25

10–12 Mar 2025
CERN
Europe/Zurich timezone
There is a live webcast for this event.

Session

Impact of accelerator instrumental issues on luminosity calibrations

3
11 Mar 2025, 16:00
774/R-013 (CERN)

774/R-013

CERN

104
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Conveners

Impact of accelerator instrumental issues on luminosity calibrations: 3A

  • Manuel Gonzalez Berges (CERN)

Impact of accelerator instrumental issues on luminosity calibrations: 3B

  • David Stickland (Princeton University (US))

Impact of accelerator instrumental issues on luminosity calibrations: 3C

  • David Stickland (Princeton University (US))

Presentation materials

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  1. 13. Tune measurements in vdM fills, before and during collisions
    Tom Levens (CERN)
    11/03/2025, 16:00
  2. 14. LHC bunch-population measurements in Run III & beyond: a status report
    Alexander Nicholas Jury (University of Liverpool (GB))
    11/03/2025, 16:20

    • DCCT, FBCT, BSRL: performance, issues, new developments.
    • also: BPTX @ IP1 & IP5, w/ applicable functionalities; BQM
    • also: 1-2 slides on planned HL-LHC upgrades of the beam
    instrumentation relevant to bunch-current measurements?

    Go to contribution page
  3. 15. LHCb ghost-charge measurements
    Niall Thomas Mchugh (University of Glasgow (GB))
    11/03/2025, 16:50

    • Run-III results and performance to date
    • brief mention of plans for further improvements

    Go to contribution page
  4. 36. Numerical Tools for Studying Beam Dynamics Effects on Luminosity Calibration: COMBI and XSUITE
    Dr Tatiana Pieloni (EPFL)
    11/03/2025, 17:10
    • XSUITE: Overview and Recent Luminosity Developments
    • Benchmarking Luminosity Calculations: COMBI vs. XSUITE (private version)
    • First Studies on Linear Coupling (Local and Global) as an Example Case
    • Potential Uses of XSUITE in Future Studies and Plans (e.g., adding the entire LHC lattice, including errors, long-range beam-beam interactions, etc.)
    Go to contribution page
  5. 16. Follow-up questions and discussion
    Witold Kozanecki (University of Oregon (US))
    11/03/2025, 17:30
  6. 17. Impact of magnetic non-linearities, BPM performance & x-y coupling on ATLAS length-scale calibrations
    Richard Hawkings (CERN)
    12/03/2025, 09:00

    • including the systematic. uncertainties associated w/ DOROS-
    BPM performance limitations, e.g. non-reproducibility of the
    BPM length scale, their response to beam-beam deflections and
    their apparent out-of-plane coupling

    Go to contribution page
  7. 18. Status report on LHC beam-position measurements at the experimental IPs
    Dr Marek Gasior (CERN)
    12/03/2025, 09:35

    • DOROS BPMs: improvements since the start of Run III,
    performance, known limitations & issues
    • Brief comments about Arc BPMS in the context of orbit-drift
    monitoring?

    Go to contribution page
  8. 19. BPM- and BGI-based beam-displacement measurements at IP8
    Vladislav Balagura (Centre National de la Recherche Scientifique (FR))
    12/03/2025, 10:00
  9. 34. Emittance evolution in physics and luminosity-calibration fills: what measurements do we have and what did we learn from them?
    Sofia Kostoglou (CERN)
    12/03/2025, 11:00
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