Analysis Meeting 27 Jan 09Beam Characterization with TOFs1 Beam Characterization with the TOFs Mark Rayner
Analysis Meeting 27 Jan 09Beam Characterization with TOFs2 Saturday 13 th December Shift run # pionsprotonspositrons D2MeV/c various? TOF0MeV/c currentQ various? AQ Q D D Q Q Q Q Q Q
Analysis Meeting 27 Jan 09Beam Characterization with TOFs3 Pions from 13 th December
Analysis Meeting 27 Jan 09Beam Characterization with TOFs4 Positrons from 13 th December
Analysis Meeting 27 Jan 09Beam Characterization with TOFs5 Cable Length Calibration (0,1)
Analysis Meeting 27 Jan 09Beam Characterization with TOFs6 Cable Length Calibration (0,0)
Analysis Meeting 27 Jan 09Beam Characterization with TOFs7 Cable Length Calibration (1,0)
Analysis Meeting 27 Jan 09Beam Characterization with TOFs8 Cable Length Calibration (1,1)
Analysis Meeting 27 Jan 09Beam Characterization with TOFs9 TOF0—TOF1 Time of flight (ns) calibration…Mean=8m/30cm ns – t various p, >200, =1 150ps resolution need timewalk correction (and more data!) e+ ‘420MeV/c +’ Transverse momentum (MeV/c) p=30MeV/c mainly muons amplitude 15.2 sigma 157ps mainly pions amplitude 50.0 sigma 196ps
Analysis Meeting 27 Jan 09Beam Characterization with TOFs10 TOF & Momentum
Analysis Meeting 27 Jan 09Beam Characterization with TOFs11 Pion trace space fits before amplitude cuts TOF0 x (mm) TOF1 x (mm)TOF1 y (mm) TOF0 y (mm) TOF0 dx/dz TOF1 dx/dz TOF1 dy/dz TOF0 dy/dz
Analysis Meeting 27 Jan 09Beam Characterization with TOFs12 TOF0 x (mm) TOF1 x (mm)TOF1 y (mm) TOF0 y (mm) TOF0 dx/dz TOF1 dx/dz TOF1 dy/dz TOF0 dy/dz Muon trace space
Analysis Meeting 27 Jan 09Beam Characterization with TOFs13 Work in Progress ●Apply amplitude cut on calculation of , , , ●Repeat process for muons ●Attempt to narrow and time of flight peaks ■Try to use both TOF0 planes ■Add time-walk calibration ●Error analysis ●Monte Carlo to check decay kinematics ●Take into account emittance growth in the Cherenkov