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Figure 4
Calculated time-interval distributions (TIDs) of the recorded counts of the fast channel (dead-time of type II) by using equation (2)[link] at different ρτF values. (a) TID (thick gray line) at 220 kcps (ρτF = 0.03); there are no dead-time distortions at time intervals longer than 2τF and the exponential best fitting (thin red line), performed at times >2τF, gives an estimated ρFITTING equal to the true ρ. (b) TID (thick gray line) at 2.2 Mcps (ρτF = 0.3); here, there are dead-time distortions at time intervals smaller than 5τF; the exponential best fitting (thin red line), at time intervals >5τF, gives an estimated ρFITTING equal to the true ρ. (c) TIDs at ρ = 2.2 Mcps; the TID at ρτF = 0.3 (dashed gray line, τF = 138 ns) is compared with the TID at ρτF = 3 (solid gray line, τF = 1.38 us); the exponential fitting of the TID at ρτF = 3 gives an estimated ρFITTING = 1.3 Mcps (different from the true ρ = 2.2 Mcps), even at time intervals greater than 20τF.

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 22| Part 5| September 2015| Pages 1190-1201
https://doi.org/10.1107/S1600577515013776
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