From: Neil Pomphrey Sent: Monday, March 05, 2007 3:12 PM To: Thomas G. Brown Cc: George W. Labik; Michael E. Viola; Michael C. Zarnstorff; Brentley C. Stratton Subject: vvsa1 flux loop wire positions from measurememt data Attachments: vvsa1_d1_outside_loop_winding_test; vvsa1_d1_inside_loop_winding_test; vvsa1_d1_inside_loop_contact_test; vvsa1_d1_outside_loop_contact_test Tom On 2/20/2007 you sent me an Email attaching VVSA1 loop tracing points for loop D1. I have now written a code for backing out the Cartesian coordinates of the centers of each of the two turns that form the flux loop. The files vvsa1_d1_outside_loop_winding_test and vvsa1_d1_inside_loop_winding_test that are attached are the calculated coordinates for the outer and inner windings. Also attached are files vvsa1_d1_outside_loop_contact_test and vvsa1_d1_inside_loop_contact_test which are calculated contact points of the measurement ball with the vacuum vessel surface. When you have a chance, could you plot these points to see if they make sense? For example, do the contact points on the true vessel lie (approximately) on the ideal vessel; do the winding centers look like they make sense, etc. The code that I had to write was surprisingly complicated so there is plenty room for screwing up!! I have various tests in my code, but I think your graphics will really help. Thanks Neil PS: It will be good in future (when I am sure everything is ok) to separate the tracing.pts data you will be providing me for each loop into SEPARATE inner and outer turn measurements. We can discuss this later.