The calibration system of the Muon g-2 experiment
| Autor: | M. Incagli, A. Driutti, Dariush Hampai, Franco Bedeschi, N. Raha, Fabrizio Marignetti, A. Fioretti, A. Nath, A. Lusiani, G. Corradi, L. Santi, D. Moricciani, G. Piacentino, Marin Karuza, S. Mastroianni, A. Basti, D. Cauz, A. Gioiosa, S. Donati, M. Sorbara, Giovanni Cantatore, O. Escalante, G. Venanzoni, S. Di Falco, S.B. Dabagov, Melanie Ann Smith, G. Di Sciascio, C. Gabbanini, G. Pauletta, M. Iacovacci, Claudio Ferrari, R. Di Stefano |
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| Přispěvatelé: | Driutti, A., Basti, A., Bedeschi, F., Cantatore, G., Cauz, D., Corradi, G., Dabagov, S., Di Falco, S., Di Sciascio, G., Di Stefano, R., Donati, S., Escalante, O., Ferrari, C., Fioretti, A., Gabbanini, C., Gioiosa, A., Hampai, D., Iacovacci, M., Incagli, M., Karuza, M., Lusiani, A., Marignetti, F., Mastroianni, S., Moricciani, D., Nath, A., Pauletta, G., Piacentino, G. M., Raha, N., Santi, L., Smith, M., Sorbara, M., Venanzoni, G. |
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Nuclear and High Energy Physics
Physics::Instrumentation and Detectors Electromagnetic calorimeter Laser system Muon g-2 Calibration methods Optics 01 natural sciences law.invention Nuclear physics law 0103 physical sciences Calibration Calibration method Fermilab 010306 general physics Instrumentation Nuclear and High Energy Physic Physics Muon Anomalous magnetic dipole moment 010308 nuclear & particles physics Calibration methods Electromagnetic calorimeter Laser system Muon g-2 Optics Electromagnetic calorimeter Laser system Muon g-2 Calibration methods Optics Laser Calorimeter Optic High Energy Physics::Experiment Beam (structure) Storage ring |
| Zdroj: | NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT 936 (2019): 98–101. doi:10.1016/j.nima.2018.10.045 info:cnr-pdr/source/autori:Driutti, A.; Basti, A.; Bedeschi, F.; Cantatore, G.; Cauz, D.; Corradi, G.; Dabagov, S.; Di Falco, S.; Di Sciascio, G.; Di Stefano, R.; Donati, S.; Escalante, O.; Ferrari, C.; Fioretti, A.; Gabbanini, C.; Gioiosa, A.; Hampai, D.; Iacovacci, M.; Incagli, M.; Karuza, M.; Lusiani, A.; Marignetti, F.; Mastroianni, S.; Moricciani, D.; Nath, A.; Paulett, G.; Piacentino, G. M.; Raha, N.; Santi, L.; Smith, M.; Sorbara, M.; Venanzoni, G./titolo:The calibration system of the Muon g-2 experiment/doi:10.1016%2Fj.nima.2018.10.045/rivista:NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT/anno:2019/pagina_da:98/pagina_a:101/intervallo_pagine:98–101/volume:936 Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment |
| DOI: | 10.1016/j.nima.2018.10.045 |
| Popis: | The Muon g –2 experiment at Fermilab (E989) plans to measure the muon anomalous magnetic moment to a precision of 140 parts per billion (ppb), which corresponds to a total uncertainty of 1 . 6 × 1 0 − 10 . To achieve this level of precision the experiment must detect more than 1 . 8 × 1 0 11 decay positrons by using the 24 calorimeters distributed around the muon storage ring. Each calorimeter consists of 54 Pb F 2 crystals read out by SiPMs. The response of each of the 1296 channels must be calibrated and monitored to keep uncertainties due to gain fluctuations at the sub-per mil level in the time interval corresponding to one beam fill ( 700 μ s ) and at the sub-percent level on longer time scales. These requirements are much more demanding than those needed by most high energy physics experiments. This paper presents a novel laser-based calibration system that distributes light to all calorimeter cells, while allowing one to correct for laser intensity fluctuations and to monitor the distribution chain stability at unprecedented levels of accuracy. Results on the system performance during the first few months of stored muon operation in 2018 are also presented. |
| Databáze: | OpenAIRE |
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