[Halld-cal] Fwd: bcal times from mcsmear are being cut off at t=0

[Sean Dobbs]

Hi Richard,

We are actually currently not using the TDCs in the BCAL reconstruction to
the best of my knowledge. Probably Will or I should look at mcsmear since
we would be the ones who introduced the bug

Cheers
Sean
On Tue, Jan 10, 2017 at 8:58 PM Richard Jones <richard.t.jones at uconn.edu>
wrote:

> [resending using attachments]
>
>
> Dear Elton, Zisis,
>
> I am going systematically through each of the subsystems and looking at
> raw hits distributions coming out of hdgeant4 / mcsmear, comparing them
> with hdgeant / mcsmear and I ran into this surprise that the TDC time
> distributions for the bcal coming out of mcsmear seem to be getting chopped
> off at t=0. The effect seems to be present at both the upstream and
> downstream end (end=0 and end=1, I don't remember which is which. I have
> included distributions for the fADC pulse_time values as well for
> comparison. These are not being cut off, indicating that the problem is in
> mcsmear rather than in Geant. I can reproduce this effect in the hdgeant4
> output as well, but I suspect that it is a bug. Unless we are no using the
> tdc outputs right now??
>
> A question for you both: would you prefer that this message be posted in
> the HallD electronic logbook, or simply posted to the email list?
>
> -Richard Jones
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://mailman.jlab.org/pipermail/halld-cal/attachments/20170111/aa5e70ac/attachment.html>