[gate-users] Counts vs. time slice

[Corinne J Groiselle]

Angela M K Foudray wrote:

>That's good to know, but unfortunately, I'm looking to specify the
>number of Coincidence events - the number of annhilations should be the
>same as the time multiplied by the source strengths added up, right? 
>  
>
Not exactly... Because of the way the particle generator works the 
number of annihilations is not exactly the time by the activity. So it's 
a way to be sure of the number of emitted particles.

>So, unfortunately this doesn't get me a known number of Coincidence
>events (that's based on sensitivity - something that I don't know a
>priori).
>  
>
For that, I have no idea! ;-)

>Thanks for trying though! :)
>Ange
>
>On Fri, 2004-09-03 at 16:29, Corinne J Groiselle wrote:
>  
>
>>Hi Angela,
>>
>>At the end of your macro, remove all the lines about time and
>>especially the following line:
>>/gate/application/startDAQ
>>
>>Instead, you should use 
>>
>>/run/beamOn NbrOfEvents
>>
>>where NbrOfEvents is the number of annihilations you want to generate.
>>
>>Corinne
>>
>>Angela M K Foudray wrote: 
>>    
>>
>>>Does anyone know if you can simulate for a certain number of Coincidence
>>>events instead of a certain amount of time?  I.E.
>>>/gate/application/setCoincCountsStop 10000
>>>instead of
>>>/gate/application/setTimeStop 1 s
>>>
>>>I'm running a bunch of batch jobs and I want a particular amount of
>>>statistics and I don't care how long in simulation time it takes.
>>>
>>>Ange
>>>
>>>_______________________________________________
>>>gate-users mailing list
>>>gate-users at lphe1pet1.epfl.ch
>>>http://lphe1pet1.epfl.ch/mailman/listinfo/gate-users
>>>  
>>>      
>>>
>>-- 
>>
>>
>>______________________________________________________________________
>>Corinne J. Groiselle, PhD
>>
>>Research instructor
>>
>>Division of Nuclear Medicine / Department of Radiology 
>>University of Massachusetts Medical School 
>>55 Lake Avenue North
>>Worcester, MA 01655
>>USA
>>
>>phone: (508)-856-6123 - fax: (508)-856-4572
>>e-mail: Corinne.Groiselle at umassmed.edu
>>professional homepage: http://users.umassmed.edu/corinne.groiselle
>>personal homepage: http://corinne.groiselle.free.fr
>>
>>
>>
>>______________________________________________________________________
>>_______________________________________________
>>gate-users mailing list
>>gate-users at lphe1pet1.epfl.ch
>>http://lphe1pet1.epfl.ch/mailman/listinfo/gate-users
>>    
>>
>
>  
>

-- 

------------------------------------------------------------------------
Corinne J. Groiselle, PhD
Research instructor

Division of Nuclear Medicine / Department of Radiology
University of Massachusetts Medical School
55 Lake Avenue North
Worcester, MA 01655
USA

_phone_: (508)-856-6123 - fax: (508)-856-4572
_e-mail_: Corinne.Groiselle at umassmed.edu
_professional homepage_: http://users.umassmed.edu/corinne.groiselle
_personal homepage_: http://corinne.groiselle.free.fr


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