Acceptance for PRM transmission 10.35 %

Document #:

JGW-L1605744-v1

Document type:

L

Submitted by:

Yuta Michimura

Updated by:

Yuta Michimura

Document Created:

14 Oct 2016, 13:03

Contents Revised:

14 Oct 2016, 13:03

DB Info Revised:

14 Oct 2016, 13:06

Abstract:

Measured power transmissivity for coated PRM was 10.35 %, whereas required spec was 10 + 0.1 - 0 %.
MIF subgroup concluded that PRM transmission of 10.35 % is acceptable according to shot noise coupling calculation for length control and alignment control.
See attached documents for noise difference between 10 % case and 10.35 % case. Shot noise difference is negligible.

Files in Document:

• ASCShotNoiseCoupling.pdf (378.9 kB)
• LSCShotNoiseCoupling.pdf (77.8 kB)

Topics:

• Detector:Interferometer Sensing and Control:Alignment Sensing and control
• Detector:Optics
• Detector:Interferometer Sensing and Control:Length Sensing and Control
• Activity:KAGRA
• Detector:Interferometer Sensing and Control

Authors:

• Yoichi Aso
• Yuta Michimura

Referenced by:

• JGW-T1910359: ASC simulations for O3 SRM transmission, SRC Gouy phase shift and ITM transmission asymmetry