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%3A00347545" target="_blank" >RIV/68407700:21670/20:00347545 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1109/TNS.2020.2966679" target="_blank" >https://doi.org/10.1109/TNS.2020.2966679</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1109/TNS.2020.2966679" target="_blank" >10.1109/TNS.2020.2966679</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, have provided valuable complementary luminosity information. Results are presented from measurements with the Timepix3 (TPX3) detectors. In contrast with previously employed frame-based data acquisition, the TPX3 detector remains active continuously, sending information on the pixel hits as they occur. The hit- and cluster-counting methods were used for the luminosity determination of the Large Hadron Collider (LHC) proton-proton collisions. The LHC luminosity versus time is determined using these two methods and fits to a simple model, which incorporates luminosity reduction from the 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 measurements 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 the individual proton bunches when integrated over an LHC fill.
Czech name
—
Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10303 - Particles and field physics

Project
<a href="/en/project/EF16_013%2F0001785" target="_blank" >EF16_013/0001785: Van de Graaff Accelerator - a Tunable Source of Monoenergetic Neutrons and Light Ions</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

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