Magnetic field sensitivity studies and construction of MUSE

MUSE is a tabletop, permanent magnet stellarator which has been constructed at PPPL that has a quasi-axisymmetric magnetic field using simple coils. This work presents sensitivity studies of the magnetic field due to certain possible construction defects. These defects include correlated perturbations of the permanent magnet locations due to the magnet holders being misplaced, uncorrelated 'flipping' of permanent magnets which were placed backwards in their seats, and uncorrelated 'replacing' of permanent magnets when permanent magnets of a different size than the intended size are placed in a given location. The severity of these perturbations are analyzed to determine which types of errors pose the greatest risk to the construction of MUSE. Additionally, insights from the construction of MUSE and analysis of whether these perturbations were successfully avoided are presented.