[Halla12_software] Magnet field maps and coordinate system

[Zhiwen Zhao]

Hi,Paul

I looked at the old simulation plots.
I think PVDIS used the center of the coil as z=0 and SIDIS used the 
center of target as z=0.
The beam direction and x,y are as you mentioned.
I suggest we all start to use the coil center as z=0 so that we can used 
one single filed map for all configuration.

Paul, Can you pass the am files of those field maps to me so that I can 
convert them to gemc format? also the barrel info.

Thanks

Zhiwen

On 01/18/2011 11:05 AM, Paul E. Reimer wrote:
> Hello,
>
> I am about to generate a field map for SOLID based on
>
>    1. CDF
>    2. ZEUS
>    3. BABAR (although this seems to no longer be an option but is good
>       for comparison).
>
> What are we using for the origin of our coordinate system (z=0)? I'm
> used to either using the target center or the upstream face of the
> magnet as z=0, with the beam headed in the positive z direction, y being
> up and x to "beam left" to form a right handed coordinate system. I know
> that this is a trivial question, but I want to make sure that we are all
> on the same page here.
>
> Paul
>
> --
> Paul E. Reimerreimer at anl.gov
> Argonne National Laboratory     (630)252-4037
> 9700 S. Cass Ave.               (630)252-3903 (fax)
> Argonne, IL  60439              (630)840-5708 (Fermilab)
>                                  (630)344-9207 (cell)
> http://www.phy.anl.gov/mep/staff/Reimer_P_E.html
>
>
>
> _______________________________________________
> Halla12_software mailing list
> Halla12_software at jlab.org
> https://mailman.jlab.org/mailman/listinfo/halla12_software