LIGO Document G1601136-v1

New OSEM results using a displacement-doubling prism-based flag

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G - Presentations (eg Graphics)
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The suspension systems for future Gravitational Wave (GW) detectors require an improved level of immunity to sources of mechanical perturbation of their suspended test-masses. The displacement sensors used to mitigate such perturbations (OSEMs) need to be upgraded for improving their performance in frequency range less than 1 Hz. The conceptual design of displacement shadow sensors utilising a 'displacement doubling prism' [1] is presented.

References: 1) N.A. Lockerbie, Nucl. Instrum. Meth. A, 741 (2014) 192195.

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