Construction and Performance of the Barrel Electromagnetic Calorimeter for the GlueX Experiment

Abstract

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 herein. 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. We characterize the performance of the BCAL using the energy resolution integrated over typical angular distributions for ${\pi }^0$ and $\eta$ production of ${\sigma }_E/E$=5.2\%/$\sqrt{E(\mathrm{GeV})}\oplus$ 3.6\% and a timing resolution of $\sigma$\,=\,150\,ps at 1\,GeV.

arXiv comment46 pages, 33 figures

References in corpus (7)

• Big-Bang Nucleosynthesis
• Hybrid Mesons
• Radiation Hardness Tests of SiPMs for the JLab Hall D Barrel Calorimeter
• Measurement of the beam asymmetry $\Sigma$ for ${\pi }^0$ and $\eta$ photoproduction on the proton at $E_{\gamma }=9$ GeV
• Characterisation of a silicon photomultiplier device for applications in liquid argon based neutrino physics and dark matter searches
• The GlueX Central Drift Chamber: Design and Performance
• A measurement of the energy and timing resolution of GlueX Forward Calorimeter using an electron beam

Cited by in corpus (22)

• First measurement of near-threshold J/$\psi$ exclusive photoproduction off the proton
• Radiation damage of SiPMs
• Photoproduction of axion-like particles
• The GlueX Beamline and Detector
• Silicon Photomultipliers in Particle and Nuclear Physics
• Measurement of the J/$\psi$ photoproduction cross section over the full near-threshold kinematic region
• Beam Asymmetry $\mathbf{\Sigma }$ for the Photoproduction of $\eta$ and ${\eta }^{\prime }$ Mesons at ${\mathbf{E}}_{\gamma }=8.8$GeV
• Implication of the dark axion portal for the EDM of fermions and dark matter probing with NA64$e$, NA64$\mu$, LDMX, $\mbox{M}^3$, and BaBar
• The Central Drift Chamber for GlueX
• Strange Hadron Spectroscopy with Secondary KL Beam in Hall D
• Measurement of Spin-Density Matrix Elements in $\rho (770)$ Production with a Linearly Polarized Photon Beam at $E_{\gamma }=8.2-8.8\text{GeV}$
• Search for photoproduction of axion-like particles at GlueX
• Measurement of beam asymmetry for ${\pi }^{-}{\Delta }^{++}$ photoproduction on the proton at $E_{\gamma }$=8.5 GeV
• Search for axion-like particles through nuclear Primakoff production using the GlueX detector
• Measurement of the Photon Beam Asymmetry in $\vec{\gamma }p\to K^{+}{\Sigma }^0$ at $E_{\gamma }=8.5$ GeV
• Using machine learning to separate hadronic and electromagnetic interactions in the GlueX forward calorimeter
• Upper Limit on the Photoproduction Cross Section of the Spin-Exotic ${\pi }_1(1600)$
• First Measurement of Near- and Sub-Threshold $J/\psi$ Photoproduction off Nuclei
• Spin-Density Matrix Elements for Vector Meson Photoproduction at GlueX
• Evaluation of the Response to Electrons and Pions in the Scintillating Fiber and Lead Calorimeter for the Future Electron-Ion Collider
• Measurement of Spin-Density Matrix Elements in $\varphi (1020)\to K_S^0{K}_L^0$ Photoproduction with a Linearly Polarized Photon Beam at $E_{\gamma }=8.2-8.8$ GeV
• Beam Asymmetries ($\Sigma$) for ${\pi }^0$, $\eta$ and ${\eta }^{\prime }$ in Photoproduction at GlueX