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ET quantum noise curves - discussion -

ET quantum noise curves - discussion -. Helge Müller-Ebhardt 1 , Henning Rehbein 1 , Stefan Hild 2 , Andreas Freise 2 , Harald Lück 1 and Karsten Danzmann 1 1 Max-Planck-Institut für Gravitationsphysik (AEI) Institut für Gravitationsphysik, Leibniz Universität Hannover

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ET quantum noise curves - discussion -

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  1. ET quantum noise curves- discussion - Helge Müller-Ebhardt1, Henning Rehbein1, Stefan Hild2, Andreas Freise2, Harald Lück1 and Karsten Danzmann1 1Max-Planck-Institut für Gravitationsphysik (AEI) Institut für Gravitationsphysik, Leibniz Universität Hannover 2School of Physics and Astronomy University of Birmingham TexPoint fonts used in EMF. Read the TexPoint manual before you delete this box.: AAAA

  2. ET potential classical noise performance 10 km arms with 120 kg mirrors - 13 dB underground cooling 20 K - 20 dB [cf. Stefan‘s Cascina talk]

  3. Non-detuned SR Michelson NS-NS range ------------- 1000 Mpc 2500 Mpc 3 MW in a 400 Hz cavity - 10 dB

  4. SR Michelson optimized towards NS-NS 1500 Mpc 3000 Mpc 10 dB input squeezing optimized

  5. DOS optimized towards NS-NS 1800 Mpc 1.5 MW in each optical spring

  6. Local readout optimized towards NS-NS 1700 Mpc local meter with 1 kW 10 dB input squeezing for local meter not optimized

  7. Local readout optimized towards NS-NS 1800 Mpc local meter with 10 kW 10 dB input squeezing for local meter not optimized

  8. SR Sagnac optimized towards NS-NS 1800 Mpc 4000 Mpc - 10 dB not optimized

  9. Outlook • more rigorous classical noise estimation, e.g. for the suspension thermal noise → together with Stefan • true classical noise estimation for different optical configurations such as the SR Sagnac topology → together with Stefan • optimizations towards other astrophysical sources • optimizations, which also account more for the high frequencies • investigate more combinations among QND schemes • investigate other QND ideas

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