[Gate-users] back to back type

[Ismet Isnaini]

hi there.. 


I need some more help here.. 

1. We are trying to visualize a DOI-PET. We try to use a source with type of 
backtoback with a certain volume. We found out that if we include the definition 
of the volume of source, as well as the backtoback type, the resulting root file 
will give error later on. We use our own program to convert the root file to 
listmode and histogram file. It has got error when creating the coincedence 
file... 


In contrast, if we  remove the volume of the source as well as backtoback type 
and use a particle e+ only .. the root file can produce the histogram file 
alright.. 


It is said that is the bug of gate version 6 (???), the backtoback source is not 
actually 180degree, therefore instead we just have to use particle e+ in a 
volume.

Could you please give more clarification on this matter.. 

2. In the documentation it is said that the benchmarkPET would run for 2hrs,  
but if we see the program, the acquisition time is for a few minutes only .. 

could you please explain what does the  documentation actually mean ??? 



3. In regard to mailist archive.. is there any search method in which we can 
search questions from previous months/archive for a certain subject for example 
??? probably i am not a very keen observer/reader that might have missed this 
feature..... 


regards