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

Journal article

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.

Authors: Aad, G; Aakvaag, E; Abbott, B; Abeling, K; Abicht, N

• Publication status: Published
• Peer review status: Peer reviewed
• Publisher: IOP Publishing
• Journal: Journal of Instrumentation
• Volume: 19
• Issue: 05
• Article number: P05054
• Publication date: 2024-05-21
• Acceptance date: 2024-04-04
• DOI: 10.1088/1748-0221/19/05/p05054
• EISSN: 1748-0221
• Language: English
• Keywords: Timing detectors; Performance of High Energy Physics Detectors; Vertexing algorithms; Cherenkov detectors