August 30, 2021 to September 3, 2021
University of Innsbruck
Europe/Zurich timezone

【334】Precision Luminosity Measurement at the LHC

Sep 1, 2021, 5:45 PM
Room B

Room B

Talk Nuclear, Particle- and Astrophysics (FAKT - TASK) Nuclear, Particle- & Astrophysics


Joanna Wanczyk (EPFL - Ecole Polytechnique Federale Lausanne (CH))


The goal of the study is to reach 1% uncertainty - the most precise luminosity measurement for high pile-up pp machine. The accumulated experience and detector upgrades give a unique opportunity to improve the measurement during Run 3 and prepare for demanding HL-LHC conditions. Better luminosity precision is required to minimize its impact on numerous particle physics measurements.
The focus is put to study the beam-beam effects during the VdM and operational scans, as these effects are the main limiting factor for high luminosity. COMBI code is used for understanding them and evaluating corrections. The new optimized luminometer is assembled to provide linear measurement and stability over the operating period.

Primary author

Joanna Wanczyk (EPFL - Ecole Polytechnique Federale Lausanne (CH))


Tatiana Pieloni (EPF Lausanne)

Presentation materials