2 Dimensional QExCE map : R7081-02 TA1181

QExCE data with 2D scanned Collection Efficiency data

[QExCE]	q>0.0 p.e	q>1/3 p.e	q>0.5 p.e
Center of cathode	24.0 %	20.2 %	18.9 %
whole cathode	21.4 %	18.1 %	16.9 %

Parameters of Charge Response : sq0/q0 = 0.3313, qtau/q0 = 0.2, pe = 0.1677

02/06/2008 : update QExCE with new charge response