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Etude et impact du bruit de fond corrélé pour la mesure de l'angle ...

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3.8 Data reconstruction 69<br />

A <strong>de</strong>dicated s<strong>et</strong>up consisting in one read-out channel was built to measure<br />

most of the necessary PDFs and to tune the <strong>de</strong>sign of the full read-out chain.<br />

Variation channel-to-channel such as gains, baselines, SPE width, <strong>et</strong>c. are<br />

consi<strong>de</strong>red including dispersion e↵ects. In this way the simu<strong>la</strong>tion exhibit<br />

non-linearity e↵ects as observed in the data. Upon calibration, data and<br />

MC energies agree within 1 %.<br />

tel-00821629, version 1 - 11 May 2013<br />

Figure 3.21: Schema of the DC reconstruction strategy. Both data and<br />

MC follows the same reconstruction process, performed at CCIN2P3 by the<br />

Common Trunk.<br />

3.8 Data reconstruction<br />

Both data and MC are subjected to the same reconstruction process, performed<br />

by the common trunk (CT). The CT takes p<strong>la</strong>ce at CCIN2P3 as soon<br />

as the MC generation ends or the data files are transferred from onsite. A<br />

schematic view of the reconstruction steps performed by the CT is shown in<br />

Fig. 3.21.<br />

For each event, the pulses contained in the digitised waveforms are reconstructed<br />

to obtain charge and timing information. Such informations are<br />

then used to reconstruct the interaction vertex, the muon track (if a muon<br />

is i<strong>de</strong>ntified) and the <strong>de</strong>posited energy.

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