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The CLAS12 Central Time-of-Flight system

Journal Article · · Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment
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  1. Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
  2. Univ. of Glasgow, Scotland (United Kingdom)
  3. National Inst. of Nuclear Physics (INFN), Genova (Italy)
  4. Kyungpook National Univ. (Korea)
+ Show Author Affiliations
The Central Time-of-Flight system for the large-acceptance CLAS12 spectrometer in Hall B at the Thomas Jefferson National Accelerator Facility is described. The system consists of a hermetic barrel of 48 scintillation counters at a radius of 25 cm from the beamline. The wedge-shaped counters are 3.4 cm wide, 3.0 cm thick, and 90 cm long, and span a range of polar angles relative to the center of the nominal target location from roughly 35° to 125°. The counters reside in the 5-T field of the CLAS12 superconducting solenoid. The bars are read out via bent light guides 1 m long on the upstream end of the counters and 1.6 m long on the downstream end. The phototubes are shielded by a multi-layer dynamical magnetic shield system to reduce the local fringe fields in the range from 400 G to 1000 G down to the level of 0.2 G at the location of the photocathodes. The average effective time resolution of the counters is 80 ps.
Research Organization:
Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)
Grant/Contract Number:
AC05-06OR23177
OSTI ID:
1602431
Alternate ID(s):
OSTI ID: 1602305
Report Number(s):
DOE-OR--23177-4916; JLAB-PHY--20-2926
Journal Information:
Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment, Journal Name: Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment Journal Issue: C Vol. 960; ISSN 0168-9002
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English

References (11)

The CEBAF large acceptance spectrometer (CLAS)
  • Mecking, B. A.; Adams, G.; Ahmad, S.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 503, Issue 3 https://doi.org/10.1016/S0168-9002(03)01001-5
journal May 2003
Design and study of photomultiplier pulse-shaping amplifier powered by the current flowing through a voltage divider journal June 2003
Dynamic magnetic shield for the CLAS12 central TOF detector photomultiplier tubes
  • Baturin, V.; Burkert, V.; Carman, D. S.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 664, Issue 1 https://doi.org/10.1016/j.nima.2011.10.003
journal February 2012
The CLAS12 Spectrometer at Jefferson Laboratory
  • Burkert, V. D.; Elouadrhiri, L.; Adhikari, K. P.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 959 https://doi.org/10.1016/j.nima.2020.163419
journal April 2020
The CLAS12 Geant4 simulation
  • Ungaro, M.; Angelini, G.; Battaglieri, M.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 959 https://doi.org/10.1016/j.nima.2020.163422
journal April 2020
The CLAS12 Central Neutron Detector
  • Chatagnon, P.; Bettane, J.; Hoballah, M.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 959 https://doi.org/10.1016/j.nima.2020.163441
journal April 2020
The CLAS12 software framework and event reconstruction
  • Ziegler, V.; Baltzell, N. A.; Bossù, F.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 959 https://doi.org/10.1016/j.nima.2020.163472
journal April 2020
The CLAS12 Trigger System
  • Raydo, B.; Boyarinov, S.; Celentano, A.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 960 https://doi.org/10.1016/j.nima.2020.163529
journal April 2020
The CLAS12 Data Acquisition System
  • Boyarinov, S.; Raydo, B.; Cuevas, C.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 966 https://doi.org/10.1016/j.nima.2020.163698
journal June 2020
The CLAS12 Silicon Vertex Tracker
  • Antonioli, M. A.; Baltzell, N.; Boyarinov, S.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 962 https://doi.org/10.1016/j.nima.2020.163701
journal May 2020
The CLAS12 high threshold Cherenkov counter
  • Sharabian, Y. G.; Burkert, V. D.; Biselli, A.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 968 https://doi.org/10.1016/j.nima.2020.163824
journal July 2020

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Related Subjects

47 OTHER INSTRUMENTATION
CLAS12
Particle identification
Plastic scintillator
Time of flight