  We present a design for a new microresonator whose geometry is optimized to
maximize sub-Standard Quantum Limit (SQL) performance. The new design is
predicted to have thermal noise well below the SQL across a broad range of
frequencies when operated at 10K. The performance of this designed
microresonator will allow it to serve as a test-bed for quantum non-demolition
measurements, and to open new regimes of precision measurement that are
relevant for many practical sensing applications, including advanced
gravitational wave detectors.
