Difference between revisions of "Tagger Magnetic Field Maps - ca. January, 2013"
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(Created page with "The field map linked below was created by Yang Guangliang (Glasgow, UK) on January 15, 2013. The current in the coils has been adjusted to give a central field in the dipole of ...") |
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* The x axis is defined as parallel to the short axis of the magnet poles, with the origin at the inner edge of the root of the poles. | * The x axis is defined as parallel to the short axis of the magnet poles, with the origin at the inner edge of the root of the poles. | ||
* Only the region x>=0, y>=0, z>=0 is represented in the map. The field in the other 4 quadrants characterized by y<0 and z<0 are found by reflection through the planes y=0 and z=0. | * Only the region x>=0, y>=0, z>=0 is represented in the map. The field in the other 4 quadrants characterized by y<0 and z<0 are found by reflection through the planes y=0 and z=0. | ||
| + | * The step size in x is 1 cm from 0 to 100 cm, for a total of 101 grid points. | ||
| + | * The step size in y is 3 mm from 0 to 15 mm, for a total of 6 grid points. | ||
| + | * The step size in z is 1 cm from 0 to 400 cm, for a total of 401 grid points. | ||
| + | The field tables below are readable plain text files with an explanatory header. They also happen to be self-extracting scripts which can be run using the perl interpreter to create compact 3-column files that are suitable to use as inputs to simulation or ray-tracing codes. | ||
| + | |||
| + | # [http://grinch.phys.uconn.edu/Gluex/fieldmaps/taggerBfield-dipole-15000G.table] | ||
| + | # [http://grinch.phys.uconn.edu/Gluex/fieldmaps/taggerBfield-quadrupole-arb.table] | ||
Revision as of 12:19, 19 February 2013
The field map linked below was created by Yang Guangliang (Glasgow, UK) on January 15, 2013. The current in the coils has been adjusted to give a central field in the dipole of approximately 15000G. The map grid has been constructed as follows.
- The z axis is defined as parallel to the long axis of the magnet poles, with the origin at the center of the magnet poles.
- The y axis is defined as perpendicular to the bend plane, pointing up, with the origin at the midplane between the poles.
- The x axis is defined as parallel to the short axis of the magnet poles, with the origin at the inner edge of the root of the poles.
- Only the region x>=0, y>=0, z>=0 is represented in the map. The field in the other 4 quadrants characterized by y<0 and z<0 are found by reflection through the planes y=0 and z=0.
- The step size in x is 1 cm from 0 to 100 cm, for a total of 101 grid points.
- The step size in y is 3 mm from 0 to 15 mm, for a total of 6 grid points.
- The step size in z is 1 cm from 0 to 400 cm, for a total of 401 grid points.
The field tables below are readable plain text files with an explanatory header. They also happen to be self-extracting scripts which can be run using the perl interpreter to create compact 3-column files that are suitable to use as inputs to simulation or ray-tracing codes.
