Construction and performance of the barrel electromagnetic calorimeter for the Gluex experiment
- Univ. of Regina, SK (Canada). Dept. of Physics
- Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
- Carnegie Mellon Univ., Pittsburgh, PA (United States)
- National and Kapodistrian Univ. of Athens (Greece)
- Federico Santa Maria Technical Univ., Valparaiso (Chile)
- Indiana Univ., Bloomington, IN (United States)
The barrel calorimeter is part of the new spectrometer installed in Hall D at Jefferson Lab for the GlueX experiment. The calorimeter was installed in 2013, commissioned in 2014 and has been operating routinely since early 2015. The detector configuration, associated Monte Carlo simulations, calibration and operational performance are described in this paper. The calorimeter records the time and energy deposited by charged and neutral particles created by a multi-GeV photon beam. It is constructed as a lead and scintillating-fiber calorimeter and read out with 3840 large-area silicon photomultiplier arrays. Particles impinge on the detector over a wide range of angles, from normal incidence at 90 degrees down to 11.5 degrees, which defines a geometry that is fairly unique among calorimeters. The response of the calorimeter has been measured during a running experiment and performs as expected for electromagnetic showers below 2.5 GeV. Finally, we characterize the performance of the BCAL using the energy resolution integrated over typical angular distributions for and production of and a timing resolution of ps at 1 GeV.
- Research Organization:
- Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States); Indiana Univ., Bloomington, IN (United States); Carnegie Mellon Univ., Pittsburgh, PA (United States); Univ. of Regina, SK (Canada); Federico Santa Maria Technical Univ., Valparaiso (Chile)
- Sponsoring Organization:
- USDOE Office of Science (SC), Nuclear Physics (NP); Natural Sciences and Engineering Research Council of Canada (NSERC); National Commission for Scientific and Technological Research (CONICYT) (Chile)
- Grant/Contract Number:
- AC05-06OR23177; FG02-05ER41374; FG02-87ER40315; SAPPJ-2015-00024; FB-0821
- OSTI ID:
- 1433089
- Alternate ID(s):
- OSTI ID: 1582948
- Report Number(s):
- JLAB-PHY-18-2624; DOE/OR/23177-4318; arXiv:1801.03088; PII: S0168900218304807; TRN: US1802374
- Journal Information:
- Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 896; ISSN 0168-9002
- Publisher:
- ElsevierCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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