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

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

10303 - Particles and field physics

Projekt

<a href="/cs/project/LTT17018" target="_blank" >LTT17018: Získávání nových poznatků o mikrosvětě v infrastruktuře CERN</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2020

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

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

—

Počet stran výsledku

2

Strana od-do

—

Název nakladatele

EPJ Web of Conferences

Místo vydání

—

Místo konání akce

Portorož

Datum konání akce

17. 6. 2019

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

000649130300002