Time resolution - HV and Thresholds scan on the GIF beam at CERN  
(GIF source OFF, Gas "old" Ar(30%)CO2(50%)CF4(20%) )


  • Time resolution for the single plane.

    • - Time distribution of the signal from one channel (Plane 6, ch 14). Run 365, HV=3.95 kV, threshold=THR1.
    Fit by two semigaussians with common center (P1) and two different standard deviations Sigma1 and Sigma 2
    (S1=P2 and S2=P3) Plot .
    - Fit parameters (center, S1, S2 and S) vs channel # in all 6 planes (run 365, HV=3.95 kV, threshold=THR1).
    Overall standard deviation Sigma S=sqrt((S1**2+S2**2)/2).
    From each plane 3 the most populated channels are presented (total 18) Plot .
    -Fit parameters (center-page 1, S1-page 2, S2-page 3 and S-page 4) vs HV and thresholds
    for the most populated channel from each plane Plot .
  • Time resolution for the 1-st and the 2-nd arrivals.

    • -Time distributions and fits for the the 1-st and the 2-nd arrivals.
    (run 365, HV=3.95 kV, threshold=THR1) Plot .
  • Efficiency and RMS vs HV for the 1-st and the 2-nd arrivals.

    • - software gates inf., 25 nsec and 20 nsec (threshold THR1) Plot
    Last modified: Mon May 31 12:40:00 CST 1999
    teren@fnal.gov