Pre-stress and Support Structure Studies/Experiments
How much is needed? Past Experience?
(conventional wisdom of full pre-stress puts a very
high value which may be difficult, if not practical)
Vertical pre-stress: Try to determine experimentally. Experiments in first magnet?
Horizontal pre-stress: Not an option
Conflict between beam aperture and internal support structure.
Strategy: Assure contact between coil and external support structure at low field
Outward Lorentz forces will help.
Test this approach in the first magnet.