Defining angles for an upstream collimator geometry

Juliette and I discussed how to properly define the angles defining the radii of the collimator. The goal is to have to same profile for the electrons downstream of the VT collimator.

The upper edge is ok and is defined the same way for each try: use extreme angle of 11.84 from downstream side of target to find upstream radius. Then, find the normal angle from the upstream side of the target (found 10.4), and use that to define the downstream radius.

First Try

Lower Edge: use extreme angle of 5.84 from upstream side of target to define the upstream radius. Then, find the normal angle from the downstream side of the target (found 6.66), and use that to define the downstream radius.

Values: 28.821, 31.351

Second Try

First thing was to change the radius of TORD so the sides were correct. This time, the lower radii were defined by

Lower Edge: use extreme angle of 5.84 from the upstream side of target to find the downstream radius. Then, find the normal angle (now 6.595), and use that to define the upstream radius.

Values: 28.53, 31.04

Thirdd try

Lower edge still needs fixing

Lower Edge: use extreme angle of 5.755 to define upstream radius. Then, the normal angle becomes 6.56 and use that to define the downstream radius.

Values: 28.4, 30.89

Summary of changes:

1->2: lower extreme angle defines upstream side -> defines downstream side
2->3: lower extreme angle changed from 5.84 -> 5.755