Magnetic noise calculation for BS (and ETM/ITM, PRM/SRM)

Document #:

JGW-T1504459-v9

Document type:

T

Submitted by:

Tomofumi Shimoda

Updated by:

Tomofumi Shimoda

Document Created:

02 Nov 2015, 12:15

Contents Revised:

02 Jul 2017, 23:03

DB Info Revised:

02 Jul 2017, 23:03

Abstract:

Calculation result of magnetic noise induced by interaction between the magnets attached on the BS mirror and magnetic field gradient.
Calculation results for ETM/ITM and PRM/SRM in the same way are shown in the second document (PPT_MagneticNoise.pdf).

# 2 July 2017 : add effects of torque on magnet(N=µxB) to the second file(PPT_MagneticNoise_v3.pdf)

*** in Japanese ***

Files in Document:

• KAGRA_MagneticNoise_BS_v2.pdf (469.5 kB)
• PPT_MagneticNoise_v3.pdf (1.3 MB)

Topics:

• Detector:Interferometer Sensing and Control
• Activity:KAGRA
• Detector:Suspensions

Authors:

• Tomofumi Shimoda

Related Documents:

• JGW-T1503469: Evaluation of BS and RM noise arisen from the AC component of geomagnetism field

Referenced by:

• JGW-T1504450: BS Actuator Design (including design for SRs and PRs)
• JGW-T1503453: Actuator Noise Modeling Report