Arm Length Stabilization at the 40m prototype

Document #:

JGW-G1100398-v1

Document type:

G

Submitted by:

Kiwamu Izumi

Updated by:

Kiwamu Izumi

Document Created:

19 Mar 2011, 08:39

Contents Revised:

19 Mar 2011, 08:39

DB Info Revised:

19 Mar 2011, 08:52

Abstract:

A test for the Arm Length Stabilization (ALS) is underway at the caltech 40m prototype interferometer. The experimental setup has been completed for a single arm and we have started examining the performance of the ALS scheme. The scheme employs a frequency-doubled auxiliary laser to sense the arm cavity motion prior to full lock acquisition. It enables us to hold the arm length at a desired value to ease the complexity of the successive lock acquisition steps. A successful lock of the ALS has been demonstrated for the single arm, resulting in a residual displacement of 200 pm in rms.

Files in Document:

• ALS_poster.pdf (2.1 MB)

Topics:

• Detector:Interferometer Sensing and Control:Length Sensing and Control
• Management:Others
• Activity:R&D

Authors:

• Kiwamu Izumi

Keywords:

ALS interferometer