Performance study of the ATLAS Forward Proton Time-of-Flight Detector System
The result's identifiers
Result code in 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>
Result on the web
<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>
Alternative languages
Result language
angličtina
Original language name
Performance study of the ATLAS Forward Proton Time-of-Flight Detector System
Original language description
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.
Czech name
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Czech description
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Classification
Type
D - Article in proceedings
CEP classification
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OECD FORD branch
10303 - Particles and field physics
Result continuities
Project
<a href="/en/project/EF16_019%2F0000754" target="_blank" >EF16_019/0000754: Nanotechnologies for Future</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
P o S - Proceedings of Science
ISBN
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ISSN
1824-8039
e-ISSN
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Number of pages
8
Pages from-to
"055-1"-"055-8"
Publisher name
Scuola Internazionale Superiore di Studi Avanzati
Place of publication
Trieste
Event location
Lopud; Croatia
Event date
Oct 13, 2019
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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