[Gate-users] pulse adding

[Simon Stute]

Hi,

1: Hits are added to produce Pulses (done by the pulseAdder module using
energy-weighted centroid).
This step acts in the crystalSD volume, so as a pulse is created in each
separated volume.
2: Pulses in a same volume defined as the Readout volume, are separated by
winner-takes-all (done by the ReadOut module).
This step acts if you defined your ReadOut depth above the depth of your
final crystal. It is useful to simulate behavior of dual-layer crystals, or
crystal-block all viewed by a same PMT. Basically if you do not want
ReadOut, put its depths the highest possible. If you want it work, put its
depth to a volume that is not the finest volume.

Hope it helps,
Simon

On Fri, Jul 16, 2010 at 4:07 PM, Eunsin Lee <eunsin at mail.med.upenn.edu>wrote:

> Dear Users,
>
> I looked at gate internal codes to figure out what Gate actually does for
> pulse adding..
> Gate user's manual says that pulses will be summed up by readout module to
> produce a single pulse.
> Then pulse position will be determined by winner-takes-all.
> However, when I looked at GatePulseAdder.cc/hh the position is
> energy-wighted centroid, which a lot more makes sense to me.
> My question is whether the GatePulseAdder.cc is being used in Gate.
>
> Basically I want to get the final pulse position to be a energy-weighted
> centroid, not winner-takes-all..
> Any help would be greatly appreciated.
>
> Thanks so much in advance,
> Eunsin
> ******************************************************
> Eunsin Lee
> Postdoctoral Research Associate
> PET Center, Department of Radiology
> University of Pennsylvania School of Medicine
> eunsin at mail.med.upenn.edu
> (215) 349-5751 (office)
> (979) 574-7235 (cell)
> ******************************************************
>
>
>
>
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