MDC M.C. Tuning (2)Trackingeffciencyof元Trackingeffciencydifference(mu_mc-mu_data)/mu_mc_rezhukmc-%J!p0.90.850.80.75652,data0.7652. MC0.650.6h0.050.10.150.20.250.30.350.40.050.150.20.250.30.10.350.4transversemomentum(GeV)transversemomentum(GeV）11
MDC M.C. Tuning (2) 11
dEdx Measurementhtemp24406EntriesMean430.31200DluogesedasRMS27.34/ndrpxk440.1/74p/TTConstant 1236±10.010008thean429.8±0.26%25.96 ±0.13e/TSigmK/TT80060040030separation2004505005501.83003504006000.20.40.60.81.21.41.6P(GeVlo)dE/dxseparation power asafunctionresolutionforminimumofmomentumionization particles04000h364520Entriespo(/ +1)p3odEMean669.4(pl-In[p2+(-)")- p3500(yRMS289.216000bpsdxrawADC300014000Fp250012000H100002000eHT800015006000100040005002000obLA5001000150020003000250010°1010°101prADccomparisonbetweendE/dxenergyloss curveMCanddatay=βy=p/m
π μ e p dEdx Measurement raw ADC 2 3 0 4 2 0 3 ( 1) 1 ( ) { 1 ln[ ( ) ]} p p p dE p y y p p p dx y y + = − + − 6% e/π K/π p/K p/π 3σ separation resolution for minimum ionization particles separation power as a function of momentum ADC comparison between MC and data dE/dx energy loss curve y≡βγ=p/m