2012 ECAL detector performance plots (2)

**Abstract: **Second collection of plots summarizing ECAL
performance on 2012 data. First collection in CMS-DP-2013-007

Figure | Caption |
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pdf version |
Crystal transparency loss behaviorTop plot: fit on dynamic model of color centers creation/recovery under irradiation to explain the changes of the crystal transparency. Each color center has 3 free parameters: creation rate, saturation level and recovery rate. Bottom plot: instantaneous luminosity as a function of time. N.B. this is an illustrative plot. Fit results are not used in the calibration. Only laser data (points) are used. |

pdf version |
Evolution of the φ-symmetry intercalibration constants in 2012Time evolution of the standard deviation of the ratio distribution between two sets of inter-calibration constants (IC). The intercalibration is performed with the φ-symmetry method for individual ECAL barrel crystals using 2012 data. The standard deviation is determined by a Gaussian fit to the ratio distribution. |

pdf version pdf version |
π0/η invariant mass distributions with 2012 dataTop (bottom) plot: π0 (η) invariant mass peaks reconstructed in Barrel with 2012 data. Spectrum fitted with a combination of a double (single) Gaussian for the signal and 4th (2th)order polynomial for the background. The entire 2012 dataset is considered, using special online π0/η calibration streams. The sample size is determined by the rate of this calibration stream. S/B and fitted resolution indicated on the plots. The fitted peak positions are not exactly at the nominal π0/η mass values. This is mainly due to the effects of selective readout and leakage outside the 3x3 clusters used in the mass reconstruction. |

I | Attachment | History | Action | Size | Date | Who | Comment |
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EB_2012_eta0.pdf | r1 | manage | 16.6 K | 2013-07-11 - 14:33 | ToyokoOrimoto | ||

png | EB_2012_eta0.png | r1 | manage | 112.7 K | 2013-07-11 - 14:33 | ToyokoOrimoto | |

EB_2012_pi0.pdf | r1 | manage | 16.8 K | 2013-07-11 - 14:32 | ToyokoOrimoto | ||

png | EB_2012_pi0.png | r1 | manage | 124.0 K | 2013-07-11 - 14:32 | ToyokoOrimoto | |

phisymm_evolution.pdf | r1 | manage | 65.4 K | 2013-07-11 - 14:31 | ToyokoOrimoto | ||

png | phisymm_evolution.png | r1 | manage | 68.4 K | 2013-07-11 - 14:31 | ToyokoOrimoto | |

xtal_transp_loss.pdf | r1 | manage | 143.8 K | 2013-07-11 - 14:30 | ToyokoOrimoto | ||

png | xtal_transp_loss.png | r1 | manage | 180.0 K | 2013-07-11 - 14:30 | ToyokoOrimoto |

This topic: CMSPublic > PhysicsResults > EcalDPGResults > EcalDPGResultsCMSDP2013016

Topic revision: r3 - 2013-07-12 - ToyokoOrimoto

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