Performance of the ATLAS forward proton Time-of-Flight detector in Run 2

Summary, in English

We present performance studies of the Time-of-Flight (ToF) subdetector of the ATLAS Forward Proton (AFP) detector at the LHC. Efficiencies and resolutions are measured using high-statistics data samples collected at low and moderate pile-up in 2017, the first year when the detectors were installed on both sides of the interaction region. While low efficiencies are observed, of the order of a few percent, the resolutions of the two ToF detectors measured individually are 21 ps and 28 ps, yielding an expected resolution of the longitudinal position of the interaction, z vtx, in the central ATLAS detector of 5.3 ± 0.6 mm. This is in agreement with the observed width of the distribution of the difference between z vtx, measured independently by the central ATLAS tracker and by the ToF detector, of 6.0 ± 2.0 mm. © 2024 CERN for the benefit of the ATLAS collaboration.

• Author: G Aad; T.P.A. Åkesson; C. Doglioni; P.A. Ekman; V. Hedberg; H. Herde; B. Konya; E. Lytken; R. Poettgen; N.D. Simpson; O. Smirnova; E.J. Wallin; L Zwalinski
• Department/s: Particle and nuclear physics; eSSENCE: The e-Science Collaboration; Department of Physics
• Publishing year: 2024
• Language: English
• Publication/Series: Journal of Instrumentation
• Volume: 19
• Issue: 5
• Links: http://dx.doi.org/10.1088/1748-0221/19/05/P05054
• Document type: Journal article
• Publisher: IOP Publishing
• Topic: Subatomic Physics
• Keywords: Cherenkov detectors; Performance of High Energy Physics Detectors; Timing detectors; Vertexing algorithms; High energy physics; Piles; Cherenkov Detectors; High energy physics detector; Performance; Performance of high energy physic detector; Performance study; Subdetectors; Time-of flight; Time-of-flight detectors; Vertexing algorithm; Timing circuits
• Status: Published
• ISBN/ISSN/Other: ISSN: 1748-0221