Aspects of Luminosity Determination of LHC Proton-Proton Collisions at 13 TeV
Cyprien Beaufort
IEAP CTU in Prague
Abstract: The Medipix (MPX) and Timepix (TPX) devices installed in the ATLAS cavern have made important contributions to the overall LHC luminosity determinations. The data of TPX devices operating in the ATLAS cavern was analyzed. For the luminosity determination of the LHC proton-proton collisions, Luminosity Blocks (LBs) of typically 60 seconds were defined. These LBs were used to determine LHC luminosity curves reflecting the luminosity reduction from single-bunch interactions and from beam-beam interactions. From these measurements, the internal long-term time-stability of the TPX luminosity was determined. In addition, the linearity of the TPX luminosity measurements with respect to other luminosity measurements was determined as a function of the average number of interactions per bunch crossing. Furthermore, the long-term stability of the TPX luminosity measurements was determined by comparisons to reference measurements of other luminometers, and good agreement was found. First results of measuring the luminosity of individual LHC bunches, rather than bunch-integrated luminosity, are presented.
Seminar takes place on Tuesday, July 31st 2018 at 2:00 PM
in the IEAP meeting room, Praha 2 ‐ Albertov, Horská 3a/22.
| doc. Dr. André Sopczak seminar organizer |
doc. Ing. Ivan Štekl, CSc. director of IEAP |
doc. Dr. André Sopczak IEEE CS - NPSS chair |
NUCLEAR & PLASMA SCIENCES SOCIETY CHAPTER
IEEE Czechoslovakia section
http://www.ieee.cz/en/nps