Next: Superconducting compensation magnet
Up: Final focus Quadrupole Magnet
A simple simulation shows that a support tube is enough to stabilize relative
positions of the final focus magnets at both sides of electron and positron
beams with an input ground motion measured at TRISTAN-Fuji experimental
For NLC, additional "optical anchor" is considered, which is based on laser
interferometer grounded on bed rock.
SLD vibration was measured to be 30-50nm at f>1Hz. The laser interferometer
can measure 1nm vertical oscillation of quadrupole magnets.