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Title: Timing resolution studies of the optical part of the AFP Time-of-flight detector

Journal Article · · Optics Express
DOI:https://doi.org/10.1364/oe.26.008028· OSTI ID:1436081
ORCiD logo [1];  [2];  [3];  [4];  [5];  [4];  [1];  [6];  [1];  [7];  [1];  [8];  [4];  [1];  [1];  [4];  [9];  [1];  [10];  [1]
  1. Palacky Univ., Olomouc (Czech Republic). RCPTM, Joint Lab.of Optics; Academy of Sciences of the Czech Republic (ASCR), Prague (Czech Republic). Inst. of Physics
  2. National Inst. of Nuclear Physics (INFN), Bologna (Italy); Univ. di Bologna (Italy). Dipartimento di Fisica
  3. Univ. of Texas, Arlington, TX (United States). Dept. of Physics
  4. Inst. for High Energy Physics (IFAE), Barcelona (Spain). Barcelona Inst. of Science and Technology (BIST)
  5. Univ. of Alberta, Edmonton, AB (Canada). Centre for Particle Physics, Dept. of Physics
  6. Univ. of Science and Technology of China, Hefei (China)
  7. SLAC National Accelerator Lab., Menlo Park, CA (United States)
  8. Polish Academy of Sciences (PAS), Krakow (Poland). Henryk Niewodniczanski Inst. of Nuclear Physics
  9. Stony Brook Univ., NY (United States). Dept. of Physics and Astronomy
  10. Charles Univ., Prague (Czech Republic). Inst. of Particle and Nuclear Physics, Faculty of Mathematics and Physics
+ Show Author Affiliations

We present results of the timing performance studies of the optical part and front-end electronics of the time-of-flight subdetector prototype for the ATLAS Forward Proton (AFP) detector obtained during the test campaigns at the CERN-SPS test-beam facility (120 GeV π+ particles) in July 2016 and October 2016. The time-of-flight (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 the measurement of the processes. The prototype detector uses fused silica bars emitting Cherenkov radiation as a relativistic particle passes through them. The emitted Cherenkov photons are detected by a multi-anode micro-channel plate photomultiplier tube (MCP-PMT) and processed by fast electronics.

Research Organization:
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Organization:
USDOE; MINECO of Spain; Catalan Government; MSMT of Czech Republic
Grant/Contract Number:
AC02-76SF00515
OSTI ID:
1436081
Journal Information:
Optics Express, Vol. 26, Issue 7; ISSN 1094-4087
Publisher:
Optical Society of America (OSA)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 4 works
Citation information provided by
Web of Science

References (8)

Geant4—a simulation toolkit
  • Agostinelli, S.; Allison, J.; Amako, K.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 506, Issue 3 https://doi.org/10.1016/S0168-9002(03)01368-8
journal July 2003
3D silicon pixel detectors for the ATLAS Forward Physics experiment journal March 2015
Design of Cherenkov bars for the optical part of the time-of-flight detector in Geant4 journal January 2014
Beam tests of an integrated prototype of the ATLAS Forward Proton detector journal September 2016
Ways to detect a light Higgs boson at the LHC journal October 2002
A high-resolution time interpolator based on a delay locked loop and an RC delay line journal January 1999
Extending the study of the Higgs sector at the LHC by proton tagging journal March 2004
Construction of the optical part of a time-of-flight detector prototype for the AFP detector journal January 2016

Figures / Tables (13)

Fig. 1(p. 3)figure Fig. 1
Fig. 2(p. 4)figure Fig. 2
Table 1(p. 4)table Table 1
Fig. 3(p. 5)figure Fig. 3
Fig. 4(p. 6)figure Fig. 4
Fig. 5(p. 7)figure Fig. 5
Fig. 6(p. 8)figure Fig. 6
Fig. 7(p. 8)figure Fig. 7
Fig. 8(p. 9)figure Fig. 8
Table 2(p. 9)table Table 2
Table 3(p. 9)table Table 3
Fig. 10(p. 10)figure Fig. 10
Fig. 9(p. 10)figure Fig. 9

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