Photogrammetry Review

1
Photogrammetry Review

• Raphael Goudard Visit
• Nov 27 Nov 30

2
Suggested Activities

• Intro to NCSX Project / Assembly Sequence
• Brown movies and models
• Photogrammetry use on current phase
• Measure and compare to our files
• Offer suggestion of how photogrammetry can be
  used to rack and align coils
• Photogrammetry use on future phase
• MCHP (3 coil Half Period), FP (Field period) and
  final assembly
• Lock in on machine as we assemble layers (Mod
  coils, TF coils, PF Coils, Cryostat)
• Specifics of Aicon System
• Reverse Engineering
• Deflection analysis
• Import/export
• pre/post processing
• How to avoid Wendelstein processing time (when
  does it bog down)
• Reuse of coded target numbers
• Is he familiar with GSI V-Star system?

3
Debrief

• Arrived Monday gave brief tour
• Tuesday Set up targets on A1 930 1030 Took
  a lot of time to ream holes for new
  photogrammetry targets
• 1030 1130 took first project set of 200
  pictures Verify A1 scan with laser tracker (.060
  mm)
• Placed B1 on A1 then took second set of 200
  photos and learned that B1 did not distort A1.
  (.070 mm)
• During lunch B1 was removed then took third set
  of photos after lunch and verified the A1 still
  was stable (.060 mm)

4
Debrief

• Wednesday Set up targets on B3 which had just
  completed racking and measuring
• Took pictures to characterize coil (.050 mm)
• Unracked coil using dial indicators took photos
  and whiskers showed that coil moved exactly as
  dial indicators.
• Analyzed data using best fit as well deformation
  analysis (.090 mm)
• Realigned wedge to itself before and after and
  could identify deformation vs. translation (.180
  mm)
• We then tried to rerack the coil by restoring the
  dial indicators.
• The detection of this movement was much easier
  and obvious with photogrammetry
• We validated this movement by checking a couple
  of point with the laser tracker.

5
Debrief

• Thursday Validated LT measurements and Steve
  operated software personally and reran Mondays
  data from the beginning to the end.
• Photogrammetry has validated that the laser
  tracker measurements to date are valid. Best
  fits of Photogrammetry to LT are within (.060 mm)