Solenoid Mapping Results: Aug. 4, 2013

Mapping of the GlueX solenoid magnetic field took place July 31, 2013 to Aug. 4, 2013. Files are located here:

/group/halld-online/Solenoid_Mapping

φ dependence of field

The existence of holes in the iron of the magnet raise the possibility that the azimuthal symmetry of the field may be broken at a level that will require corrections in the data analysis. Lines were mapped parallel to the magnet axis at different φ locations to check the degree of this effect. Here are some plots showing comparisons of measured values at different φ locations. Each plot was at a different radius from magnet center and differences were taken relative to the measurements done at φ=90^o.