Looks like you got most of the relevant numbers. Here is my interpretation:
1. E/T timing: Compared to previous estimates, E-counters are 5 ns late, T-counters
are 5 ns early. Relative to radiator, E-counters come at 180 ns, T-counters come in
at 155.
==> Need to add 25 ns to T-counters to make coincidence.
2. Does this bring the Master OR late relative to CLAS? From the plots I conclude we
are still OK. This is my reasoning:
I assume in "standard" configuration that connection from fast Master OR cable to
electronics is 16 ns.
June: Master OR = (standard -16 ns) + 50 ns (from fast cable to electronics)
TS to TDC stop = standard = 39 ns.
No Asynch Input = (standard -10) + 0 ns.
No T-counter delay = standard + 25 ns
July: Master OR = (standard - 16 ns) + 50 ns (from fast cable to electronics)
TS to TDC stop = (standard -39 ns) + 16 ns.
No Asynch Input = (standard -10) + 0 ns.
No T-counter delay = standard + 25 ns (but will NOT change TDC spectra here)
TDCs spectra June: mininum (need more room) = 10 ns
==> Expect Peak = 10 ns - (16-50) - 10 + 25 = 59 (good)
TDCs spectra July: peak = 45 ns
==> Expect Peak = 45 ns -(39-16) - (16-50) - 10 = 46 ns (ok)
With the adjustable delays in the Mater OR, we can add delay to the trigger and
thereby decrease TDC times if desired.
Elton.
p.s. cable stock and connectors have been ordered. We will have to fabricate the
cables, but should be able to do this before the next tagger run.