1. The beamline starts with a curved guide and has a straight section behind
it
2. The beamline starts with a straight guide, then a curved section follows;
and it ends with another straight part.
3. The last set-up consists of three straight parts (of different lengths)
with an angle alpha between first and the second as well as between the second
and the third.
After starting the tool you have to choose one of these 3 cases and give information about the sizes and the curvature of the guide. Then you are given the mimimal length of the last (straight) part that is necessary to avoid direct view. If the curvature is so small that particles are able to fly parallel to the guide in the straight section (after passing the curved section), the minimal length is unlimited. In this case, the message of the program will be "curvature too small".
All guides and benders are thought to be circle segments.
Last modified: Tuesday, 03-Jul-2007 16:14:08 CEST