January 3, 2006
ALMA Prototype Antenna Evaluation Overview
Evaluation Overview
11
API5D Measurements
±
Laser Interferometer
±
Measures 5D Displacement
±
Accuracy:
°
Device: 0.2
m
m/m
°
Enclosed System: < 1
m
m
°
Exposed System: Few
m
m
NOTE: Did not measure L1 on AEC antenna (safety concerns).
NOTE: Did not measure L4 on either antenna (difficulty).