Date: Fri, 7 Aug 2015 19:49:52 +0000
I am modeling 100 MeV electrons which travel through 100 cm of air before striking the voxel surface of a CT scan imported with Flair where magnetic fields have been activated in the voxel regions. The beam is subject to a magnetic field provided by a magnetic map implemented with the MGNFLD subroutine, maximum 3 T, in the air and voxel regions. The voxel dimensions are 1.26953 x 1.26953 x 2.5 mm^3. I currently have the MGNFIELD card Precision set as
Max Ang (deg): 5.0
Bound Acc (cm): 0.001
Min step (cm): 0.005
And a STEPSIZE card applied to only the voxel regions set with
Min (cm): 0.01
Max (cm): 0.04
My issue is that this causes an error
**** Trackr common is full!!, increase the Mxtrck parameter in the Trackr include module!! ****
From what I understand this means that my requested number of substeps is larger than 2500. I have tried increasing the MXTRCK parameter in the TRACKR module up to 10000 but the error persists. Can anyone suggest a better combination of stepsize parameters for my situation? My thought process was that the small voxel size sets the upper limit for my accuracy.
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Dirk A. Bartkoski, Ph.D.
Postdoctoral Fellow | Radiation Physics
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