SAGDH Analysis status for. the first period data. Presented by. Hai-jiang Lu. USTC group, China. Difference (1 st && 2 nd ). Analysis Status for the 1 st. Summary. Difference. Configuration:. Half statistics. Septum: wrong wrapped wire. Background.
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the first period data
USTC group, China
Septum: wrong wrapped wire.
High trigger rate
Status: PID Calibration
Align Single-photon Electron peak to 200
Minimize the following:
Status: PID efficiency (Cherenkov)
Detection efficiency: >99.99%
electron accept efficiency: 99.7%pion reject efficiency : 97.8%
E_tot/p > x0
Status: PID efficiency (lead glass)
Detection efficiency: >99.5%
Status: Scintillator inefficiency
Both Scintillator are triggered.
Only one Scintillator (S1 or S2) is triggered.
Status: VDC inefficiency
one Track reconstructed in VDC.
more than one tracks reconstructed in VDC
Status: cross section asymmetry
Status: Statistics uncertainty
not real random
Status: Charge Asymmetry
ps_rate = real_rate/prescal
If R>Rmax, then additional Deadtime:
Status: asymmetry of elastic
Status: asymmetry of production (he3)
Red marker:false asymmetry from Nitrogen:
Low nu, has a high elastic tail?