Timepix3 Luminosity Determination of 13 TeV Proton-Proton Collisions at the ATLAS Experiment

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21670%2F20%3A00350692" target="_blank" >RIV/68407700:21670/20:00350692 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1051/epjconf/202022501002" target="_blank" >https://doi.org/10.1051/epjconf/202022501002</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1051/epjconf/202022501002" target="_blank" >10.1051/epjconf/202022501002</a>

Result language
angličtina
Original language name
Timepix3 Luminosity Determination of 13 TeV Proton-Proton Collisions at the ATLAS Experiment
Original language description
Medipix and Timepix devices, installed in the ATLAS cavern at the LHC, have provided valuable complementary luminosity information. Results are presented from measurements with Timepix3 (TPX3) detectors. In contrast with previously employed frame-based data acquisition, the TPX3 detector remains active continuously, sending information on pixel hits as they occur. Hit- and cluster-counting methods were used for the luminosity determination of the LHC proton-proton collisions. The LHC luminosity versus time is determined using these two methods and fitted to a simple model, which incorporates luminosity reduction from single bunch and beam beam interactions. The precision of the luminosity determination could be improved by counting the number of clusters, instead of just pixel hits. The internal precision and long-term stability of the TPX3 luminosity measurement are below 0.5%. TPX3, owing to its 1.56 ns time-tagging, is able to resolve the time structure of the luminosity due to the collisions of individual proton bunches when integrated over an LHC fill.
Czech name
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Czech description
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Project
<a href="/en/project/LTT17018" target="_blank" >LTT17018: Getting new knowledge of the microworld using the CERN infrastructure</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
EPJ Web of Conferences: ANIMMA 2019 – Advancements in Nuclear Instrumentation Measurement Methods and their Applications
ISBN
978-2-7598-9093-4
ISSN
2100-014X
e-ISSN
—
Number of pages
2
Pages from-to
—
Publisher name
EPJ Web of Conferences
Place of publication
—
Event location
Portorož
Event date
Jun 17, 2019
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
000649130300002

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