X5 quasi offline Analysis T.Boccali, L.Borrello,V.Ciulli,M.D’Alfonso, N.DeFilippis,S.Dutta,A.Giassi,D.Giordano, S.Paoletti,R.Ranieri,P.G.Verdini 3 june 2003 M. D'Alfonso INFN Pisa
TT6: software running at X5 Read APV raw data Calculates pedestal and noise first iteration takes 500 (ped) + 500 (noise) events; Mask bad strips if noisy or dead Subtract common mode noise CM median. Return signal on strips Search for clusters using the 3 thresholds algorithm 3 june 2003 M. D'Alfonso INFN Pisa
TT6… … read root files for all detectors (TIB, TOB, TEC, TIB+TOB) … store cluster information and randomly selected events in two ntuples two kumac are used to monitor the data adapted for module with 4 or 6 apv 3 june 2003 M. D'Alfonso INFN Pisa
Where the code runs and Why TT6 Algorithm run on lxcms68: A fast feedback (within 30 min) for TIB and TOB data Check the quality of data in real time. Are the data appropriate/useful for the measurements that we want to perform ? We need more statistics? 3 june 2003 M. D'Alfonso INFN Pisa
Size of data Size of data collected ~ 220 GB TIB alone 56 GB TOB alone 23 GB TEC alone 60 GB TIB + TOB 90 GB Size of data analysed 100 GB TIB-TOB Size of ntuples 10 GB Time to analise a run ~ half an hour 3 june 2003 M. D'Alfonso INFN Pisa
Feedback on … (1) … Overlap in TIB layer 3 3 june 2003 M. D'Alfonso INFN Pisa
Feedback on… (2) … position of beam (near/far electronic) 3 june 2003 M. D'Alfonso INFN Pisa
Feedback on… (3) … noisy and dead strip 3 june 2003 M. D'Alfonso INFN Pisa
Feedback on … (4) … beam structure bunches spaced by 25 ns Run 1460 … beam structure bunches spaced by 25 ns spill (2s) made of groups of 48 bunches spaced by 23 ms 950 * 25 ns ~ 23 ms 3 june 2003 M. D'Alfonso INFN Pisa In unit of BX
Feedback on …(5) … S/N (vs strips, bias voltage, …) … APV setting during PLL-delayscan … CM with different PS set-up see Carlo and Andrea talks 3 june 2003 M. D'Alfonso INFN Pisa
To be done Improve the CMN subtraction A Comparison between different algorithms (mean,median,truncation) is ongoing Insert the informations on second cluster to study particular runs with particle out of time 3 june 2003 M. D'Alfonso INFN Pisa
Where is the data and code Raw data for TIB TOB and TEC are copied on Castor /castor/cern.ch/cms/testbeam/tkX5B/may2003 The code is available ORCA_7_2_0_pre14 package TkX5bMay2003 by next week all code will be ported to ORCA_7_2_0 3 june 2003 M. D'Alfonso INFN Pisa