Name: LHC Lumi Days 2025
Start: 2025-03-10T11:30:00+01:00
End: 2025-03-12T18:00:00+01:00
Location: CERN

LHC Lumi Days 2025

from Monday, March 10, 2025 (11:30 AM) to Wednesday, March 12, 2025 (6:00 PM)

Monday, March 10, 2025
2:00 PM
2:00 PM - 3:30 PM
Room: 774/R-013
Contributions

2:00 PM Welcome – workshop program, goals and scope - David Stickland (Princeton University (US))

2:10 PM Overview of ATLAS luminosity determination - Brian Andrew Cole (Columbia University (US))

2:50 PM Overview of CMS luminosity determination - Gabriella Pasztor (Eötvös University, Budapest)
3:30 PM Tea/Coffee
Tea/Coffee
3:30 PM - 4:00 PM
Room: 774/R-013
4:00 PM
4:00 PM - 5:40 PM
Room: 774/R-013
Contributions

4:10 PM HI-specific vdM-calibration issues (ALICE Speaker) - Martino Gagliardi (Universita e INFN Torino (IT))

4:45 PM ALICE final Run-II luminosity measurements - Jesus Guillermo Contreras Nuno (Czech Technical University in Prague (CZ))

5:05 PM LHCb methods & techniques for L measurements in pp collisions
Tuesday, March 11, 2025
9:00 AM
9:00 AM - 10:30 AM
Room: 774/R-013
Contributions

9:00 AM Overview of the accelerator issues that impact the absolute luminosity calibrations at the LHC - Witold Kozanecki (University of Oregon (US))

9:40 AM Sources & mitigation of non-factorization in the injectors & the LHC - Foteini Asvesta (CERN)

10:10 AM Results of the 2024 Non-factorization MD: accelerator measurements
10:30 AM Tea/Coffee
Tea/Coffee
10:30 AM - 11:00 AM
Room: 774/R-013
11:00 AM
11:00 AM - 12:30 PM
Room: 774/R-013
Contributions

11:00 AM LHCb non-factorization analyses

11:30 AM CMS non-factorization analyses - Peter Major (University of Maryland (US))

12:00 PM ATLAS non-factorization analyses
2:00 PM
2:00 PM - 3:30 PM
Room: 774/R-013
Contributions

2:00 PM Summary of beam-beam simulation studies during LS2 - Witold Kozanecki (University of Oregon (US))

2:35 PM Recent developments in beam-beam studies - Joanna Wanczyk

3:05 PM Generalization of parameterized beam-beam corrections to 2-D vdM scans - Ivan Kralik (Slovak Academy of Sciences (SK))
3:30 PM Tea/Coffee
Tea/Coffee
3:30 PM - 4:00 PM
Room: 774/R-013
4:00 PM
4:00 PM - 5:35 PM
Room: 774/R-013
Contributions

4:00 PM Tune measurements in vdM fills, before and during collisions - Tom Levens (CERN)

4:20 PM LHC bunch-population measurements in Run III & beyond: a status report - Alexander Nicholas Jury (University of Liverpool (GB))

4:50 PM LHCb ghost-charge measurements

5:05 PM Follow-up questions and iscussion
Wednesday, March 12, 2025
9:00 AM Impact of accelerator instrumental issues on luminosity calibrations
Impact of accelerator instrumental issues on luminosity calibrations
9:00 AM - 11:35 AM
Room: 774/R-013
Contributions

9:00 AM Impact of magnetic non-linearities, BPM performance & x-y coupling on ATLAS length-scale calibrations - Richard Hawkings (CERN)

9:35 AM Status report on LHC beam-position measurements at the experimental IPs - Marek Gasior (CERN)

10:00 AM BPM- and BGI-based beam-displacement measurements at IP8 - Vladislav Balagura (Centre National de la Recherche Scientifique (FR))

11:00 AM Emittance evolution in physics and luminosity-calibration fills: what S. Kostoglou +10 measurements do we have and what did we learn from them? - Sofia Kostoglou (CERN)
11:35 AM
11:35 AM - 12:35 PM
Room: 774/R-013
Contributions

11:35 AM What have the Experiments learnt from emittance scans, and what can we do better? - David Stickland (Princeton University (US))

12:00 PM Luminometer non-linearity corrections and integration uncertainties in CMS - Francesco Romeo (Vanderbilt University)
2:00 PM
2:00 PM - 2:35 PM
Room: 774/R-013
Contributions

2:00 PM Calibration-transfer and long-term stability in ATLAS: corrections & systematic uncertainties. - Giulia Ripellino (Uppsala University (SE))
2:35 PM
2:35 PM - 3:35 PM
Room: 774/R-013
Contributions

2:35 PM Use of reference physics processes for long-term relative-stability monitoring - David Walter (CERN)

3:10 PM New LHCb luminometers in Run III
3:35 PM Tea/Coffee
Tea/Coffee
3:35 PM - 4:00 PM
Room: 774/R-013
4:00 PM
4:00 PM - 5:30 PM
Room: 774/R-013
Contributions

4:00 PM First experience with the ALICE FIT system as an online luminometer

4:20 PM Looking to Run 4: ATLAS Run-3 experience with LUCID prototypes for HL- LHC - Vincent Hedberg

4:50 PM Looking to Run 4 in CMS - Alexey Shevelev (University of Maryland (US))

5:20 PM Discussion and Closeout

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