Serveur d'exploration sur l'opéra

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The OPERA magnetic spectrometer

Identifieur interne : 001D33 ( Main/Exploration ); précédent : 001D32; suivant : 001D34

The OPERA magnetic spectrometer

Auteurs : M. Ambrosio [Italie] ; R. Brugnera ; S. Dusini ; B. Dulach ; C. Fanin ; G. Felici ; F. Dal Corso ; A. Garfagnini ; F. Grianti ; C. Gustavino ; P. Monacelli ; A. Paoloni ; L. Stanco ; M. Spinetti ; F. Terranova ; L. Votano

Source :

RBID : Pascal:04-0410039

Mots-clés :

Abstract

The OPERA neutrino oscillation experiment foresees the construction of two magnetized iron spectrometers located after the lead-nuclear emulsion targets. The magnet is made up of two vertical walls of rectangular cross section connected by return yokes. The particle trajectories are measured by high precision drift tubes located before and after the arms of the magnet. Moreover, the magnet steel is instrumented with resistive plate chambers that ease pattern recognition and allow a calorimetric measurement of the hadronic showers. In this paper, we review the construction of the spectrometers. In particular, we describe the results obtained from the magnet and RFC prototypes and the installation of the final apparatus at the Gran Sasso laboratories. We discuss the mechanical and magnetic properties of the steel and the techniques employed to calibrate the field in the bulk of the magnet. Moreover, results of the tests and issues concerning the mass production of the resistive plate chambers are reported. Finally, the expected physics performance of the detector is described; estimates rely on numerical simulations and the outcome of the tests described above.


Affiliations:


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Le document en format XML

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<div type="abstract" xml:lang="en">The OPERA neutrino oscillation experiment foresees the construction of two magnetized iron spectrometers located after the lead-nuclear emulsion targets. The magnet is made up of two vertical walls of rectangular cross section connected by return yokes. The particle trajectories are measured by high precision drift tubes located before and after the arms of the magnet. Moreover, the magnet steel is instrumented with resistive plate chambers that ease pattern recognition and allow a calorimetric measurement of the hadronic showers. In this paper, we review the construction of the spectrometers. In particular, we describe the results obtained from the magnet and RFC prototypes and the installation of the final apparatus at the Gran Sasso laboratories. We discuss the mechanical and magnetic properties of the steel and the techniques employed to calibrate the field in the bulk of the magnet. Moreover, results of the tests and issues concerning the mass production of the resistive plate chambers are reported. Finally, the expected physics performance of the detector is described; estimates rely on numerical simulations and the outcome of the tests described above.</div>
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