Possible fixes for Type Bp suspension damping issue (PR2/PR3/PRM)

Document #:

JGW-T1503467-v2

Document type:

T

Submitted by:

Mark Barton

Updated by:

Mark Barton

Document Created:

09 Apr 2015, 08:53

Contents Revised:

19 Aug 2015, 09:45

Metadata Revised:

19 Aug 2015, 09:45

Abstract:

Shoda-san's model of the Type Bp suspension design shows that the pendulum mode will be hard to control because there is no inverted pendulum stage and no eddy-current dampers. A number of possible fixes are considered.

Files in Document:

• JGW-T1503467-v2.docx (5.5 MB)
• JGW-T1503467-v2.pdf (8.7 MB)

Topics:

• Activity:KAGRA
• Detector:Suspensions

Authors:

• Mark Barton

Notes and Changes:

-v1 for discussion at VIS meeting, 8/5/2015
-v2 for discussion at review meeting, 8/19/2015. More detail on immobilization and OSEM options.

Related Documents:

• JGW-T1503908: Type-Bp performance simulation

Approved for use in external presentations:

Unapproved