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Calorimeter Performance Paper

Calorimeter Performance Paper. Xavier Vilasís -Cardona. Schedule. Meeting on May 2 nd . Draft for today Comments this week. Next week: distribute to collaboration. Comments at the meeting. We shall just discuss aging of the detector related to its calibration: no special aging section. 

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Calorimeter Performance Paper

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  1. Calorimeter Performance Paper Xavier Vilasís-Cardona Calo Meeting - Xvc

  2. Schedule • Meeting on May 2nd. • Draft for today • Comments this week. • Next week: distribute to collaboration Calo Meeting - Xvc

  3. Comments at the meeting • We shall just discuss aging of the detector related to its calibration: no special aging section.  • We shall move comments on L0 trigger performance to the introduction, together with a description of the calorimeter functions • Last section on Physics results will be moved to a Discussion-Conclusions section. Other results such as Bs-> J/Psi eta  and eta' may be included • We hardly compare actual results with MonteCarlo.  Calo Meeting - Xvc

  4. Task Distribution • The section on the calibration of the PreShower should be written. Xvc will phone StephaneMonteil on Monday to discuss about the writing.  • The Pi0/Gamma section will be written by Xvc with the help of Miriam • MNM will write the Converted Photon section. Material can be obtained from an appendix in the Chi_c paper.  • Xvc will complete the section on electron Identification from the analysis of B -> J/Psi ee made by Marie Helene • Olivier will contact Victor to discuss on the contents of the Combined performance section • A part devoted to HCAL will be included, studying the total energy deposited over momentum for hadrons and, eventually, its use in muon reconstruction. This part will be taken care by Yuri.  • Olivier will try to obtain the resolutions of ECAL and HCAL from data and write the corresponding section • Xvc will move the L0 part to the introduction and quote the physics results in the discussion/conclusions section.  • Xvc will split the source file in subsections in order to be able to work in parallel and distribute them.  Calo Meeting - Xvc

  5. Current Outline • Introduction 1 • Description of the LHCb Calorimeters 3 • Calibration of the LHCb calorimeters 7 • 3.1  SPD calibration 7 • 3.2  Electromagnetic calorimeter calibration 10 • 3.2.1  Initial inter calibration and adjustment of ECAL energy scale 10 • 3.2.2  Energy flow calibration 12 • 3.2.3  Fine Ecal cell calibration 13 • 3.2.4  Ecal aging corrections 13 • 3.3  Hadronic calorimeter calibration 15 • 3.3.1  Calibration with Cesium source 15 • 3.3.2  Hcal PMT gain monitoring 16 • 3.3.3  Hcal aging correction 16 • 3.3.4  HCAL offline calibration 17 • 3.4  PreShower calibration 18 • 3.4.1  Calibration strategy with minimum ionizing particles 19 • 3.4.2  Mip sample and the fit model of the PS response 19 • 3.4.3  Calibration coefficients and performance 19 • Performance 20 • 4.1  Neutral particle reconstruction 20 • 4.2  Electron identification 22 • 4.3  Photon/merged π 0 identification 25 • 4.4  Converted gamma reconstruction 25 • 4.5  Combined performance of electron identification 26 • Discussion 28 Calo Meeting - Xvc

  6. Plans • Draft almost ready • Attached to the meeting agenda. • Finish missing points • Xvc • Olivier • Start sending comments • Distribute next week to collaboration ? Calo Meeting - Xvc

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