=head1 LASS solenoid field map =head2 Instructions This file is a self-extracting script. It will produce a field map for use in the HDGeant simulation simply by typing the following: perl dsolenoid.table >solenoid.map From: P. Brindza Date: September 21, 2001 This file contains a field map of the LASS solenoid. It was generated by P. Brindza from his 2D model of the magnet. Here are Paul's notes. [P Brindza, September 21, 2001] The solenoid model has all 17 superconducting coils and all the yoke modifications that I have proposed and that have been agreed to by the D team as per the last collaboration meeting. The yoke also has the large hole on the upstream end that we discussed at the last meeting. As an aside it would be useful to try to compare the performance of the magnet with and without the large upstream hole in the yoke. If this is something that you can do I can easily send you a grid from the other model. I have added a 4 inch thick iron wall at Z = 280.75 inches to simulate the magnetic effect of the iron phototube frame for the lead glass detector. The physical end of the iron yoke is at 200.75 inches. The grid is on a one inch spacing because my model was done in inches. This is because the drawings are in inches and my dog ate the homework where I converted them all to metric! If a finer grid is desired please let me know. The text file has 6 entries for each point , X , Y , Z , Bx , By , Bz The range is from 0) { if (/[^-.Ee0-9]$/) { @f = split(" "); next if (@f != 6); $f[3]=0 if (abs($f[3])<1e-10); $f[4]=0 if (abs($f[4])<1e-10); $f[5]=0 if (abs($f[5])<1e-10); print "$f[3] $f[4] $f[5]\n"; } }