Journal Article

PUBDB-2020-03243

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Performance studies of new optics for the time-of-flight detector of the AFP project

Nozka, L. (Corresponding author)Extern* ; Brandt, A. ; Cerny, K. ; Hrabovsky, M. ; Komarek, T. ; Krizek, F. ; Mandat, D. ; Milovanovic, M.DESY* ; Rijssenbeek, M. ; Schovanek, P. ; Sykora, T. ; Urbasek, V. ; Zatloukal, J.

2020
Soc. Washington, DC

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Please use a persistent id in citations: doi:10.1364/OE.394582  doi:10.3204/PUBDB-2020-03243

Abstract: We present the results of performance studies of the upgraded optical part of the time-of-flight subdetector prototype for the AFP (ATLAS Forward Proton) detector obtained during the test campaign in a synchrotron test-beam facility with 5 GeV electrons at the DESY laboratory (Hamburg, Germany) in June 2019. The detection of the particle arrival time is based on generation of Cherenkov light in an L-shaped fused silica bar. In the previous version of the ToF, all bars were made of two pieces (radiator and light guide) glued together with a dedicated glue (Epotek 305). This solution suffers from additional radiation damage of glue. We adopted a new technique of bar production without the need of glue. The new bars have a higher optical throughput by a factor of 1.6, reduced fragility, and better geometrical precision.

Keyword(s): radiation: damage ; time-of-flight counter ; performance ; optics ; electron: irradiation ; detector: design ; p: forward spectrometer ; ATLAS ; fabrication

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Contributing Institute(s):

1. Experimente (ZEU-EXP)
2. LHC/ATLAS Experiment (ATLAS)

Research Program(s):

1. 631 - Accelerator R & D (POF3-631) (POF3-631)

Experiment(s):

1. LHC: ATLAS

Appears in the scientific report 2020

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