The calibration system of the new g-2 experiment at Fermilab

Year: 2016

Authors: Anastasi A., Babusci D., Cantatore G., Cauz D., Corradi G., Dabagov S., Di Meo P., Di Sciascio G., Di Stefano R., Ferrari C., Fienberg A.T., Fioretti A., Gabbanini C., Hampai D., Hertzog D.W., Iacovacci M., Karuza M., Kaspar J., Marignetti F., Mastroianni S., Moricciani D., Pauletta G., Santi L., Venanzoni G.

Autors Affiliation: Università di Cassino, I-03043 Cassino, Italy; Laboratori Nazionali di Frascati dell\’INFN, POB 13, I-00044 Frascati, Italy; Dipartimento di Fisica e di Scienze della Terra, Università di Messina, Messina, Italy; INFN Sezione di Napoli, I-80125 Naples, Italy; Università di Napoli Federico II, Napoli, Italy; Istituto Nazionale di Ottica del C.N.R., Pisa, I-56100 Pisa, Italy; Università di Rijeka, Rijeka, Croatia; INFN Sezione di Roma Tor Vergata, Roma, Italy; Università di Trieste, Trieste, Italy; INFN, Sezione di Trieste, Trieste, Italy; GC Udine, Trieste, Italy; Università di Udine, I-33100 Udine, Italy; Univ Washington, Seattle, WA 98195 USA

Abstract: The muon anomaly (g-2)(mu)/2 has been measured to 0.54 parts per million by E821 experiment at Brookhaven National Laboratory, and at present there is a 3-4 standard-deviation difference between the Standard Model prediction and the experimental value. A new muon g-2 experiment, E989, is being prepared at Fermilab that will improve the experimental error by a factor of four to clarify this difference. A central component to reach this fourfold improvement in accuracy is the high-precision laser calibration system which should monitor the gain fluctuations of the calorimeter photodetectors at 0.04% accuracy. (C) 2015 Elsevier B.V. All rights reserved.


Volume: 824      Pages from: 716  to: 717

More Information: National Science Foundation (NSF); NSF – Directorate for Mathematical & Physical Sciences (MPS) 1337542
KeyWords: Instrumentation; Calorimetry; Calibration system
DOI: 10.1016/j.nima.2015.11.059

Citations: 9
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