Performance study of the ATLAS Forward Proton Time-of-Flight Detector System

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F20%3A73604194" target="_blank" >RIV/61989592:15310/20:73604194 - isvavai.cz</a>

Výsledek na webu

<a href="https://pos.sissa.it/373/055/pdf" target="_blank" >https://pos.sissa.it/373/055/pdf</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.22323/1.373.0055" target="_blank" >10.22323/1.373.0055</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Performance study of the ATLAS Forward Proton Time-of-Flight Detector System

Popis výsledku v původním jazyce

The performance of the ATLAS Forward Proton Time-of-Flight (ToF) detector is studied using the ATLAS LHC data collected in the 2017 running period of LHC Run2. A study of efficiency and time resolution of the ToF is performed. Good time resolutions of individual ToF detector channels, ranging between 20 ps to 50 ps are found, although the efficiency observed is well below 10% in major parts of the analysed data. The events from ATLAS physics runs at moderate pile-up taken at the end of 2017 are selected with signals in the two opposite ToF detector stations located at both sides of the ATLAS interaction region. The overall time resolution based on resolutions of the individual channels in these data is found to be 20 ± 4 ps and 26 ± 5 ps for the two ToF detectors. This represents a superb time resolution for a detector operating a few millimetres from the LHC beams. The difference of the primary vertex z-position measured by ATLAS and the value obtained by the ToF detectors is studied. The distribution of the difference constitutes of a background component from combinatorics since the level of pile-up is not negligible and a significantly narrower signal component from events where protons from interactions taking place in the primary vertex are detected in ToF. The fits are performed to the distributions yielding resolution of about 5 mm ±1 mm which is in agreement with the expectation based on single-channel resolutions.

Název v anglickém jazyce

Performance study of the ATLAS Forward Proton Time-of-Flight Detector System

Popis výsledku anglicky

The performance of the ATLAS Forward Proton Time-of-Flight (ToF) detector is studied using the ATLAS LHC data collected in the 2017 running period of LHC Run2. A study of efficiency and time resolution of the ToF is performed. Good time resolutions of individual ToF detector channels, ranging between 20 ps to 50 ps are found, although the efficiency observed is well below 10% in major parts of the analysed data. The events from ATLAS physics runs at moderate pile-up taken at the end of 2017 are selected with signals in the two opposite ToF detector stations located at both sides of the ATLAS interaction region. The overall time resolution based on resolutions of the individual channels in these data is found to be 20 ± 4 ps and 26 ± 5 ps for the two ToF detectors. This represents a superb time resolution for a detector operating a few millimetres from the LHC beams. The difference of the primary vertex z-position measured by ATLAS and the value obtained by the ToF detectors is studied. The distribution of the difference constitutes of a background component from combinatorics since the level of pile-up is not negligible and a significantly narrower signal component from events where protons from interactions taking place in the primary vertex are detected in ToF. The fits are performed to the distributions yielding resolution of about 5 mm ±1 mm which is in agreement with the expectation based on single-channel resolutions.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

10303 - Particles and field physics

Projekt

<a href="/cs/project/EF16_019%2F0000754" target="_blank" >EF16_019/0000754: Nanotechnologie pro budoucnost</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

P o S - Proceedings of Science

ISBN

—

ISSN

1824-8039

e-ISSN

—

Počet stran výsledku

8

Strana od-do

"055-1"-"055-8"

Název nakladatele

Scuola Internazionale Superiore di Studi Avanzati

Místo vydání

Trieste

Místo konání akce

Lopud; Croatia

Datum konání akce

13. 10. 2019

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

—