Re: updated geometry

[Richard Jones <richard.t.jones@uconn.edu>]

Beni,

Can you take care of diagnosing this?  Once you find a fix, please 
forward to me and I can verify it quickly.

Richard Jones

Matthew Shepherd wrote:
>
> Hi Richard and Beni,
>
> It would be nice to get these fixed ASAP since Blake and I working 
> right now on resolution and reconstruction studies using the BCAL.  
> Can the change be made and checked in?
>
> Thanks,
>
> Matt
>
>
> On Jul 14, 2008, at 10:35 AM, Richard Jones wrote:
>
>> Beni, some work is still needed on this geometry.  The following 
>> items are invalid, so that no particle will ever be able to enter 
>> their volumes.  This is not a comprehensive list, just the result of 
>> a quick spot check I did.  I have a tool that can enables a quick 
>> point-and-click check on individual volumes.  I can show you how to 
>> use it, if you are interested.
>>     • FDC cables re-routed to run upstream
>>     • 8mm aluminum plate in front of BCAL
>> That aluminum 8mm plate will completely wipe out the BCal resolution, 
>> once it is in there!  For the moment, however, it causes no problems 
>> at all, because particles do not see it. :-)
>>
>> -Richard Jones
>>
>>
>> Beni Zihlmann wrote:
>>>
>>> Dear colleagues,
>>> I updated the geometry in the repository. The geometry now reflects
>>> all the changes and design decisions that have been made lately.
>>> 1) remove outer most CDC layer thereby reducing the CDC radius by 
>>> 1.6 cm
>>>    including the cable runs.
>>> 2) re-route the FDC cables to run upstream
>>> 3) add an 8mm aluminum plate on the inside of the BCAL
>>> 4) the BCAL readout segmentation is 4x6 (sector x layer)
>>>
>>> all these changes are now available the in geometry file 
>>> hddsGeant3.F located in
>>> src/programs/Simulation/HDGeant/
>>>
>>> cheers,
>>> Beni
>>>
>>
>