Development of an automatic scanning system for nuclear emulsion analysis in the OPERA experiment and study of neutrino interactions location
Identifieur interne : 000696 ( France/Analysis ); précédent : 000695; suivant : 000697Development of an automatic scanning system for nuclear emulsion analysis in the OPERA experiment and study of neutrino interactions location
Auteurs : Luisa Arrabito [France]Source :
Descripteurs français
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Abstract
Following SuperKamiokande and K2K experiments, OPERA (Oscillation Project with Emulsion tRacking Apparatus), aims to confirm neutrino oscillation in the atmospheric sector. Taking advantage of a technique already employed in CHORUS and in DONUT, the Emulsion Cloud Chamber (ECC), OPERA will be able to observe the nµ® nt oscillation, through the nt appearance in a pure nµ beam. The OPERA experiment, with its ~100000 m2 of nuclear emulsions, needs a very fast automatic scanning system. Optical and mechanics components have been customized in order to achieve a speed of about 20 cm2/hour per emulsion layer (44 μm thick), while keeping a sub-micrometric resolution.
The first part of this thesis was dedicated to the optimization of 4 scanning systems at the French scanning station, based in Lyon. An experimental study on a dry objective scanning system has also been realized. The obtained results show that the performances of dry scanning are similar with respect to the traditional oil scanning, so that it can be successfully used for OPERA.
The second part of this work was devoted to the study of the neutrino interaction location and reconstruction strategy actually used in OPERA. A dedicated test beam was performed at CERN in order to simulate OPERA conditions. The obtained results definitely confirm that the proposed strategy is well adapted for tau search.
The first part of this thesis was dedicated to the optimization of 4 scanning systems at the French scanning station, based in Lyon. An experimental study on a dry objective scanning system has also been realized. The obtained results show that the performances of dry scanning are similar with respect to the traditional oil scanning, so that it can be successfully used for OPERA.
The second part of this work was devoted to the study of the neutrino interaction location and reconstruction strategy actually used in OPERA. A dedicated test beam was performed at CERN in order to simulate OPERA conditions. The obtained results definitely confirm that the proposed strategy is well adapted for tau search.
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The first part of this thesis was dedicated to the optimization of 4 scanning systems at the French scanning station, based in Lyon. An experimental study on a dry objective scanning system has also been realized. The obtained results show that the performances of dry scanning are similar with respect to the traditional oil scanning, so that it can be successfully used for OPERA.
The second part of this work was devoted to the study of the neutrino interaction location and reconstruction strategy actually used in OPERA. A dedicated test beam was performed at CERN in order to simulate OPERA conditions. The obtained results definitely confirm that the proposed strategy is well adapted for tau search.</div></front></TEI><affiliations><list><country><li>France</li></country><region><li>Rhône-Alpes</li></region><settlement><li>Lyon</li></settlement><orgName><li>Université Claude Bernard Lyon1</li><li>Université de Lyon</li></orgName></list><tree><country name="France"><region name="Rhône-Alpes"><name sortKey="Arrabito, Luisa" sort="Arrabito, Luisa" uniqKey="Arrabito L" first="Luisa" last="Arrabito">Luisa Arrabito</name></region></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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