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Title	Construction of the optical part of a time-of-flight detector prototype for the AFP detector
Related title	Construction of the optical part of a time-of-flight detector prototype for the AFP detector
Author(s)	Nozka, L (Palacky U.) ; Adamczyk, L (AGH-UST, Cracow) ; Avoni, G (INFN, Bologna ; Bologna U.) ; Brandt, A (Texas U., Arlington) ; Buglewicz, P (Cracow, INP) ; Cavallaro, E (Barcelona, IFAE) ; Chiodini, G (INFN, Lecce ; Salento U.) ; Chytka, L (Palacky U.) ; Ciesla, K (Cracow, INP) ; Davis, P M (Alberta U.) ; Dyndal, M (AGH-UST, Cracow) ; Grinstein, S (Barcelona, IFAE) ; Hamal, P (Palacky U.) ; Hrabovsky, M (Palacky U.) ; Janas, K (AGH-UST, Cracow) ; Jirakova, K (Palacky U.) ; Kocian, M (SLAC) ; Komarek, T (Palacky U.) ; Korcyl, K (Cracow, INP) ; Lange, J (Barcelona, IFAE) ; Mandat, D (Palacky U.) ; Michalek, V (Palacky U.) ; Lopez Paz, I (Barcelona, IFAE) ; Northacker, D (Stony Brook U.) ; Rijssenbeek, M (Stony Brook U.) ; Seabra, L (LIP, Lisbon) ; Schovanek, P (Palacky U.) ; Staszewski, R (Cracow, INP) ; Swierska, P (Cracow, INP) ; Sykora, T (Charles U.)
Publication	OSA, 2016
Number of pages	10
In:	Opt. Express 24 (2016) 27951-27960
DOI	10.1364/OE.24.027951
Subject category	Detectors and Experimental Techniques ; Detectors and Experimental Techniques
Accelerator/Facility, Experiment	CERN LHC ; ATLAS CERN SPS
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.
Copyright/License	publication: © 2016-2025 Optical Society of America

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