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