Silicon photomultiplier characterization for the GlueX barrel calorimeter

Barbosa, Fernando; McKisson, J.; Qiang, Y.; Smith, E. S.; Zorn, C.

doi:10.1016/j.nima.2011.11.059

Cited by 19 publications

(18 citation statements)

References 6 publications

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“…In particular, the detailed measurement of the longitudinal profile does not help determine the shower parameters and in fact adding thresholds for each readout can lead to missing small energy depositions. The simulations demonstrated that a summing scheme along the radial direction is a good match to the shower development and retains the essential [20,25], production samples at JLab (red squares) and production samples at UTFSM (triangles) [21,22] of four basic SiPM parameters as a function of the voltage over breakdown. a) gain, b) photon detection efficiency, c) dark rate per tile (the dark rate for the array is 16 times higher) and d) cross talk determined from deviations of the single-pixel distributions from a pure Poisson function.…”

Section: Electronicsmentioning

confidence: 96%

“…The lower half of the BCAL was assembled on a custom-built cradle, starting from the bottom-most, central position, and was then hoisted to the upstream GlueX detector platform since the overhead crane could not lift the entire BCAL 19 Belden 9907 coaxial cable, thinnet 10Base2 Ethernet. 20 The fourth layer is not instrumented with TDCs as that layer usually detects a small amount of energy from the showers and thus does not contribute significantly to the photostatistics that govern the timing resolution of the detector. (almost 30 tons).…”

Section: Assembly and Installationmentioning

confidence: 99%

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Construction and performance of the barrel electromagnetic calorimeter for the GlueX experiment

Beattie

Foda

Henschel

et al. 2018

Nuclear Instruments and Methods in Physics Research Section A:

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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 π 0 and η production of σ E /E=5.2%/ E(GeV)⊕ 3.6% and a timing resolution of σ = 150 ps at 1 GeV.

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Section: Electronicsmentioning

confidence: 96%

Section: Assembly and Installationmentioning

confidence: 99%

Construction and performance of the barrel electromagnetic calorimeter for the GlueX experiment

Beattie

Foda

Henschel

et al. 2018

Nuclear Instruments and Methods in Physics Research Section A:

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“…Particles produced in the interaction are first coming through a scintillator-based Start Counter, which surrounds the target and the beamline in the forward direction. The light signal is detected by silicon photomultipliers [7,8] providing track timing with 300 ps resolution as well as some particle identification based on the energy loss measurement. The timing resolution is enough to identify the bucket from the electron beam 499 MHz radio frequency (RF) structure for each photon.…”

Section: The Gluex Detectormentioning

confidence: 99%

GlueX overview: status and some future plans

Patsyuk

2017

EPJ Web Conf.

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Abstract. The GlueX experiment at Thomas Jefferson National Accelerator Facility (Jefferson Lab) has started data taking in late 2014 with its first commissioning beam. All of the detector systems are now performing at or near design specifications and events are being fully reconstructed. Linearly-polarized photons were successfully produced through coherent bremsstrahlung. An upgrade of the particle identification (PID) system with a GlueX DIRC detector, planned for 2018, will allow identification of final state kaons. The construction of the GlueX DIRC has already started. One of the plans for GlueX is to study properties of short-range correlations (SRC) in nuclei, which will shed new light on the quark-gluon structure of bound nucleons.

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“…In the GlueX experiment [1,2] Si PMs are used as photodetectors for the electromagnetic calorimeter [7], in the start counter [2], and in the γ quantum magnetic spectrometer for registering electrons and positrons [3,8]. In the magnetic spectrometer, the photon energy is measured by a system of hodoscopes, based on the deflection of electrons and positrons in the magnetic field.…”

Section: Introductionmentioning

confidence: 99%