LIGO Document T1800447-v4

Design Requirement Document of the A+ filter cavity and relay optics for frequency dependent squeezing

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Document type:
T - Technical notes
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31 Jan 2020, 15:12
DRD for frequency dependent squeezing in A+
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Notes and Changes:
Version 4:
Realized that the 2*E_lambda quantum noise is not correct for general noise-limited sensitivity calculations. Must use E_lambda / 2 for quantum PSD. Drops safe limit on all curves by a factor of 2 ASD, lowering margins but not changing design conclusions.

Version 3: includes the calculation of vertical to longitudinal noise coupling due to a possible inclination of the filter cavity beam axis by 3 mrad, as well as a summary of the the calculation done by Mike Z. et al about requirements of the vacuum system.

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