title: Construction of the optical part of a time-of-flight detector prototype for the AFP detector.
abstract: We present the construction of the optical part of the ToF (time-of-flight) subdetector prototype for the AFP (ATLAS Forward Proton) detector. The ToF detector in conjunction with a 3D silicon pixel tracker will tag and measure protons originating in central exclusive interactions p + p → p + X + p, where the two outgoing protons are scattered in the very forward directions. The ToF is required to reduce so-called pileup backgrounds that arise from multiple proton interactions in the same bunch crossing at high luminosity. The background can fake the signal of interest, and the extra rejection from the ToF allows the proton tagger to operate at the high luminosity required for measurement of the processes. The prototype detector uses fused silica bars emitting Cherenkov radiation as a relativistic particle passes through it. The emitted Cherenkov photons are detected by a micro-channel plate multi-anode Photomultiplier Tube (MCP-PMT) and processed by fast electronics.
authors.forename: L
authors.initials: L
authors.lastname: Nozka
authors.forename: L
authors.initials: L
authors.lastname: Adamczyk
authors.forename: G
authors.initials: G
authors.lastname: Avoni
authors.forename: A
authors.initials: A
authors.lastname: Brandt
authors.forename: P
authors.initials: P
authors.lastname: Buglewicz
authors.forename: E
authors.initials: E
authors.lastname: Cavallaro
authors.forename: G
authors.initials: G
authors.lastname: Chiodini
authors.forename: L
authors.initials: L
authors.lastname: Chytka
authors.forename: K
authors.initials: K
authors.lastname: Ciesla
authors.forename: P M
authors.initials: PM
authors.lastname: Davis
authors.forename: M
authors.initials: M
authors.lastname: Dyndal
authors.forename: S
authors.initials: S
authors.lastname: Grinstein
authors.forename: P
authors.initials: P
authors.lastname: Hamal
authors.forename: M
authors.initials: M
authors.lastname: Hrabovsky
authors.forename: K
authors.initials: K
authors.lastname: Janas
authors.forename: K
authors.initials: K
authors.lastname: Jirakova
authors.forename: M
authors.initials: M
authors.lastname: Kocian
authors.forename: T
authors.initials: T
authors.lastname: Komarek
authors.forename: K
authors.initials: K
authors.lastname: Korcyl
authors.forename: J
authors.initials: J
authors.lastname: Lange
authors.forename: D
authors.initials: D
authors.lastname: Mandat
authors.forename: V
authors.initials: V
authors.lastname: Michalek
authors.forename: I Lopez
authors.initials: IL
authors.lastname: Paz
authors.forename: D
authors.initials: D
authors.lastname: Northacker
authors.forename: M
authors.initials: M
authors.lastname: Rijssenbeek
authors.forename: L
authors.initials: L
authors.lastname: Seabra
authors.forename: P
authors.initials: P
authors.lastname: Schovanek
authors.forename: R
authors.initials: R
authors.lastname: Staszewski
authors.forename: P
authors.initials: P
authors.lastname: Swierska
authors.forename: T
authors.initials: T
authors.lastname: Sykora