Test masses suspension (I)
STEP: magnetic (by means of premanent currents in
superconducting
coils at very low temperature
GG: mechanical
mSCOPE: electrostatic (+ gold wire for
electrostatic discharging)
The nature of the test
requires:
•Differential accelerometer with test masses very
weakly coupled (small k increases sensitivity),
•High modulation frequency (i.e. fast rotation reduces 1/f electronic and mechanical noise)
(Both requirements better satisfied in space than at 1- g)