12AGeV and 3.3AGeV beampipes

Updates to v22a and v22b beampipe geometries.

Allows automated changes with angle of downstream section with declaration of position of psd.

pipe_v22a = psd_v22a = 12AGeV beam = 100% magnet
pipe_v22b = psd_v22b = 3.3AGeV = 60% magnet

Inner sections of the bellows had to be removed. Tube material changed from aluminium to carbonfiber