Converting Magnetic Field Maps

[David Lawrence <davidl@jlab.org>]

Hi Folks,

    In case anyone is interested, I have just put up a brief HOWTO on 
the wiki linked from the Offline Software page giving instructions on 
how to convert the ANSYS generated maps being produced in the form of 
Excel files by the engineering group into the format used by the 
simulation/reconstruction software as well as a ROOT file for 
interactive examination. The page can be found here:

http://www.jlab.org/Hall-D/software/wiki/index.php/HOWTO_Convert_a_B-field_Map_from_Excel


    I will remind everyone that currently, we still use the 1500A TOSCA 
generated map as the default. This map uses a different origin that is 
offset by 26 inches in z from our current coordinate system The new maps 
do not have this offset, but the code is hardwired assuming they do. 
Therefore, keep in mind that the simulation/reconstruction will need to 
be modified in order to use the new maps.

Regards,
-David

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 David Lawrence Ph.D.
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