Gold foil and A16 measurements-finally some agreement.

This time around, with the beam structure resolved, we can finally begin to compare A16 measurements with film measurements. By applying 1% expansion correction to film, centering the A16 profile, and correcting the A16 profile for monitoring chamber effect and chamber size effect, we obtained a perfect match. Of course, the drawback of such approach is that we could be attempting to obtain a match by applying corrections. The monitoring chamber correction applied to A16 profiles is derived from window only profile, and may not be applicable. The size correction is also derived from window only profile, but we have more reasons to use that correction. Given the 1mm size of film pixel, we can approximate the film as a point detector, and the A16's relatively large detector size requires a -0.6% correction in X-axis. With all these corrections applied, and A16 centered, the gold profile matches perfectly, except for film non-uniformity issues near the peak.