Performance of the Muon g-2 calorimeter and readout systems measured with test beam data

Year: 2019

Authors: Khaw K. S., Bartolini M., Binney H., Bjorkquist R., Chapelain A., Driutti A., Ferrari C., Fienberg AT., Fioretti A., Gabbanini C., Ganguly S., Gibbons LK., Gioiosa A., Giovanettij K., Gohn WP., Gorringe TP., Hempstead JB., Hertzog DW., Iacovacci M., Kaspar J., Kuchibhotla A., Leo S., Lusiani A., Mastroianni S., Pauletta G., Peterson DA., Pocanic D., Rider N., Schlesier CD., Smith MW., Stuttard T., Sweigart DA., Van Wechel TD., Venanzoni G.

Autors Affiliation: Univ Washington, Box 351560, Seattle, WA 98195 USA; Univ Genoa, Genoa, Italy; Ist Nazl Fis Nucl, Sez Genova, Genoa, Italy; Cornell Univ, Ithaca, NY 14850 USA;‎ Univ Udine, Udine, Italy; Ist Nazl Fis Nucl, Sez Trieste, Trieste, Italy; UOS Pisa, Ist Nazl Ott, CNR, Pisa, Italy; Ist Nazl Fis Nucl, Sez Pisa, Pisa, Italy;‎ Univ Illinois, Urbana, IL 61801 USA; Univ Molise, Rome, Italy;‎ Ist Nazl Fis Nucl, Sez Roma Tor Vergata, Rome, Italy;‎ James Madison Univ, Harrisonburg, VA 22807 USA;‎ Univ Kentucky, Lexington, KY 40506 USA; Univ Napoli, Naples, Italy; Ist Nazl Fis Nucl, Sez Napoli, Naples, Italy; Scuola Normale Super Pisa, Pisa, Italy; Univ Virginia, Charlottesville, VA 22904 USA; UCL, London WC1E 6BT, England

Abstract: A single calorimeter station for the Muon g – 2 experiment at Fermilab includes the following subsystems: a 54-element array of PbF2 Cherenkov crystals read out by large-area SiPMs, bias and slow-control electronics, a suite of 800 MSPS waveform digitizers, a clock and control distribution network, a gain calibration and monitoring system, and a GPU-based front-end which is read out through a MIDAS data acquisition environment. The entire system performance was evaluated using 2.5-5 GeV electrons at the End Station Test Beam at SLAC. This paper includes a description of the individual subsystems and the results of measurements of the energy response and resolution, energy-scale stability, timing resolution, and spatial uniformity. All measured performances meet or exceed the g – 2 experimental requirements. Based on the success of the tests, the complete production of the required 24 calorimeter stations has been made and installation into the main experiment is complete. Furthermore, the calorimeter response measurements reported here informed the design of the reconstruction algorithms that are now employed in the running g – 2 experiment.


Volume: 945      Pages from: 162558-1  to: 162558-11

More Information: We warmly thank the whole SLAC ESTB staff, especially Carsten Hast and Keith Jobe for hosting this effort, which was supported under Department of Energy (DOE), USA contract DE-AC02-76SF00515. We acknowledge the tremendous role of the CENPA and Cornell design and fabrication teams. We thank Leah Welty-Rieger (Fermilab, USA) for providing Fig. 1. This research was supported by the National Science Foundation (NSF), USA MRI program (PHY-1337542), by the DOE Offices of Nuclear, USA (DE-FG02-97ER41020) and High-Energy Physics, USA (DE-SC0008037), by the National Science Foundation, USA Physics Division (PHY-1205792, PHY-1307328, PHY-1307196, DGE-1144153), by the Istituto Nazionale di Fisica Nucleare (Italy), and the EU Horizon 2020 Research and Innovation Program under the Marie Sklodowska-Curie Grant Agreement No. 690385 and No. 734303, and by the National Natural Science Foundation of China (11375115) and the Shanghai Pujiang Program, China (13PJ1404200).
KeyWords: Lead-fluoride calorimeter; Silicon photomultiplier; Waveform digitizer; Laser calibration
DOI: 10.1016/j.nima.2019.162558

Citations: 7
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