Length Sensing and Control for AdLIGO

Document #:

JGW-T0600031-v1

Document type:

T

Submitted by:

Kentaro Somiya

Updated by:

Kentaro Somiya

Document Created:

15 Jul 2009, 11:40

Contents Revised:

15 Jul 2009, 11:40

DB Info Revised:

15 Jul 2009, 11:40

Abstract:

This is a document that is already on LIGO DCC (T060272-00), but I put it here on the JGW-DCC as well so that Japanese people can more easily recognize.

One of the things that this report shows is a calculation of loop noise, namely shot noise coupled via control, of an interferometer, which is now broadely used for advanced detectors. A so-called "lofi" control, namely a low-finesse dual-recycling for a transmitting RF sideband to extend the dynamic range, is not included in the arguement (it is shown in a separate note), but most of the modern techniques of the RSE control scheme is explained in this document.

Files in Document:

• AdLIGO-LSCv4.pdf (1.1 MB)

Topics:

• Detector

Authors:

• Osamu Miyakawa
• Kentaro Somiya

Keywords:

loop noise