# # This file contains the "original" field map produced by Paul Brindza. The # original file name was "dsolenoid.table" and it was used up until July 2007 # as the default map. It was discoverd sometime in 2005 or 2006 that this map # was probably done assuming a smaller current than what we assume is the nominal. # I have a vague recollection that Paul told me it was probably calculated # at 1400A instead of 1500A. This would seem consistent with the a comparison of # this map to a more recently produced one that used 1500A. # # 7/19/2007 D. Lawrence #--------------------------------------------------------------------------- # # #=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