The laser-based gain monitoring system of the calorimeters in the Muon g-2 experiment at Fermilab

Year: 2019

Authors: Anastasi A., Basti A., Bedeschi F., Boiano A., Bottalico E., Cantatore G., Cauz D., Chapelain AT., Corradi G., Dabagov S., Di Falco S., Di Meo P., Di Sciascio G., Di Stefano R., Donati S., Driutti A., Ferrari C., Fienberg AT., Fioretti A., Gabbanini C., Gibbons LK., Gioiosa A., Girotti P., Hampai D., Hempstead JB., Hertzog DW., Iacovacci M., Incagli M., Karuza M., Kaspar J., Khaw KS., Lusiani A., Marignetti F., Mastroianni S., Miozzi S., Nath A., Pauletta G., Piacentino GM., Raha N., Santi L., Smith M., Sorbara M., Sweigart DA., Venanzoni G.

Autors Affiliation: Ist Nazl Fis Nucl, Sez Pisa, Largo Bruno Pontecorvo 3, I-56127 Pisa, Italy;‎ Ist Nazl Fis Nucl, Sez Napoli, Complesso Univ Monte St Angelo, Via Cinthia, I-80126 Naples, Italy;‎ Univ Pisa, Dipartimento Fis, Largo Bruno Pontecorvo 3, I-56127 Pisa, Italy:‎ INFM, Sez Trieste, Via A Valerio 2, I-34127 Trieste, Italy;‎ Univ Trieste, Dipartimento Fis, Via A Valerio 2, I-34127 Trieste, Italy;‎ Ist Nazl Fis Nucl, GC Udine, Via Sci 208, I-33100 Udine, Italy;‎ Univ Udine, Via Sci 208, I-33100 Udine, Italy;‎ Cornell Univ, Dept Phys, 109 Clark Hall, Ithaca, NY 14853 USA;‎ Ist Nazl Fis Nucl, Lab Nazl Frascati, Via Enrico Fermi 40, I-00044 Frascati, Italy;‎ RAS, PN Lebedev Phys Inst, Leninsky Ave 53, Moscow 119991, Russia;‎ Natl Res Nucl Univ MEPhI, Kashirskoe Str 31, Moscow 115409, Russia;‎ Ist Nazl Fis Nucl, Sez Roma Tor Vergata, Via Ric Sci 1, I-00133 Rome, Italy; Univ Cassino, Via G Di Biasio 43, I-03043 Cassino, Italy; CNR INO SS A Gozzini, Ist Nazl Ott, Via G Moruzzi 1, I-56124 Pisa, Italy; Univ Washington, Dept Phys, Box 351560, Seattle, WA 98195 USA; Univ Molise, Dipartimento Biosci & Terr, I-86090 Pesche, Italy; Univ Napoli Federico II, Dipartimento Fis, Complesso Univ Monte St Angelo, Via Cinthia, I-80126 Naples, Italy; Univ Rijeka, Dept Phys, Radmile Matejcic 2, Rijeka 51000, Croatia; Univ Rijeka, Ctr Micro Nano Sci & Technol, Radmile Matejcic 2, Rijeka 51000, Croatia; Scuola Normale Super Pisa, Piazza Cavalieri 7, I-56126 Pisa, Italy; Univ Roma Tor Vergata, Dipartimento Fis, Via Ric Sci 1, I-00133 Rome, Italy

Abstract: The Muon g – 2 experiment, E989, is currently taking data at Fermilab with the aim of reducing the experimental error on the muon anomaly by a factor of four and possibly clarifying the current discrepancy with the theoretical prediction. A central component of this four-fold improvement in precision is the laser calibration system of the calorimeters, which has to monitor the gain variations of the photo-sensors with a 0.04% precision on the short-term (similar to 1 ms). This is about one order of magnitude better than what has ever been achieved for the calibration of a particle physics calorimeter. The system is designed to monitor also long-term gain variations, mostly due to temperature effects, with a precision below the per mille level. This article reviews the design, the implementation and the performance of the Muon g – 2 laser calibration system, showing how the experimental requirements have been met.


Volume: 14      Pages from: P11025-1  to: P11025-34

More Information: This research was supported by Istituto Nazionale di Fisica Nucleare (Italy), by Fermi Research Alliance, LLC under Contract No. DE-AC02-07CH11359 with the United States Department of Energy, and by the EU Horizon 2020 Research and Innovation Program under the Marie Sklodowska-Curie Grant Agreement No.690835 and No.734303. This work was also partially supported by MSE grant No. 533-19-15-0022 and some equipment was funded by the EU Regional Development Fund project RC.2.2.06.-0001: Research Infrastructure for Campus-based Laboratories at the University of Rijeka.
KeyWords: Detector alignment and calibration methods (lasers, sources, particle-beams); Calorimeters
DOI: 10.1088/1748-0221/14/11/P11025

Citations: 15
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