| ATLAS Note | |
| Report number | ATL-FWD-PROC-2023-004 |
| Title | ATLAS Forward Proton Time-of-Flight detectors: status, performance and new physics results |
| Author(s) | ATLAS AFP Collaboration ; Ernani Martins Neto, Daniel (Polish Academy of Sciences (PL)) |
| Corporate Author(s) | The ATLAS collaboration |
| Collaboration | ATLAS Collaboration |
| Publication | 2024 |
| Imprint | 15 Nov 2023 |
| Number of pages | 4 |
| In: | PoS EPS-HEP2023 (2024) 585 |
| In: | 2023 European Physical Society Conference on High Energy Physics (EPS-HEP2023), Hamburg, Germany, 20 - 25 Aug 2023, pp.585 |
| DOI | 10.22323/1.449.0585 |
| Subject category | Particle Physics - Experiment |
| Accelerator/Facility, Experiment | CERN LHC ; ATLAS |
| Free keywords | AFP ; ToF ; Time-of-Flight ; performance ; efficiency ; resolution |
| Abstract | ATLAS Forward Proton Time-of-Flight (ToF) detectors of the ATLAS Forward Proton (AFP) system are designed to measure the primary vertex z-position of central exclusive processes by comparing the arrival times measured in the ToF from the two intact protons. The presented results are related to the performance of the AFP ToF detector operation in 2022. The studies used low pile-up data with the average number of interactions per bunch crossing of 0.05 collected in the middle of 2022 using ToF stations at both sides of ATLAS (Far A and Far C). The time resolution of individual channels was measured to be between 20 ps and 40 ps. The AFP ToF efficiency ranged from 5$\%$ to 70$\%$ in different channels. The distribution of the difference between the primary vertex z-position measured by ATLAS and the vertex reconstructed by the AFP ToFs is studied. The resulting vertex-matching resolution was observed approximately (8 −- 10) mm for the different configurations. |
Corresponding record in: Inspire
Record created 2023-11-15, last modified 2024-07-05
PDF