Re: r4881 - trunk/src/programs/Simulation/HDGeant

[Ryan Mitchell <remitche@indiana.edu>]

Hi David,

Great.  Thanks.  That does look useful for studying FCAL shower  
profiles and is probably preferable to modifying gustep.F.  Another  
thing we want to do though is revisit the FCAL radiation damage  
simulations.  In that case we will have to generate a large number of  
minimum bias and BEAM events and record energy depositions in small  
chunks of the FCAL.  Rather than recording event-by-event energy  
depositions (which would be impractical, I think) I plan to just keep  
a running sum, with very minor modifications to what I just committed  
in gustep.F.  Is there a better way to study radiation damage than  
modifying gustep.F?

Ryan


On Feb 20, 2009, at 11:23 AM, David Lawrence wrote:

>
> Hi Ryan,
>
>   FYI: There is another mechanism available to do something similar  
> to this using trajectory points, in case you find it useful. To use  
> it, set the TRAJ card in the control.in file to 5 (see the comments  
> in control.in). Then you will get a huge hdgeant.hddm file, but it  
> will contain the info needed to make DMCTrajectoryPoint objects in  
> DANA (see src/libraries/TRACKING/DMCTrajectoryPoint.h). Since this  
> records every gustep call for every particle tracked in the event,  
> you can access the full shower development info with just as much  
> accuracy, but outside of the GEANt program.
>
>   It may not provide any advantage over the method you've already  
> implemented, but it's just something to be aware of.
>
> Regards,
> -David
>
> Hall-D.SVN.Repository@jlab.org wrote:
>> Author: remitche
>> Date: 2009-02-20 10:58:54 -0500 (Fri, 20 Feb 2009)
>> New Revision: 4881
>>
>> Modified:
>>   trunk/src/programs/Simulation/HDGeant/gustep.F
>> Log:
>> Added an ntuple (FCAL_SHOWER_PROFILE_NTUPLE) that divides the FCAL  
>> into 1x1x1cm cubes and records energy deposition in each cube.   
>> This will give us more detailed information about FCAL shower shapes.
>>
>>
>>
>
> -- 
>
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> David Lawrence Ph.D.
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