Measuring luminosity at the CMS experiment

by Joscha Knolle (DESY)

Wednesday 14 Jun 2017, 16:00 → 17:00 Europe/Berlin

Seminar Room 4a (DESY Hamburg)

Luminosity is a measure for the collision rate in a particle accelerator experiment. The larger the instantaneous luminosity, the higher are the event rates in the detector. To make a precision measurement of a cross section of some process, a precise knowledge of the integrated luminosity is thus needed. At the CMS experiment, the luminosity measurement is calibrated with the Van der Meer method. A set of different subdetectors is used to integrate the measured instantaneous luminosity over a run period. By performing dedicated studies of various systematic effects, the CMS experiment is able to report its integrated luminosity with a very high precision.

Slides JK_170614_luminosity.pdf