CRY payload actuator upgrade in 2020

Project definition

Deliverables of the work

A document to answer the following questions

  1. Does the expected actuator and sensor noise level satisfy the KAGRA requirement ?
  2. Can we lock the interferometer with the modified actuators ?
    1. Is lock acquisition possible ? (ignore noise)
    2. Can we keep the lock with weak damping ? i.e., not injecting excess control noise from strong damping
  3. Can we damp all the resonant modes of the CRY payload within reasonable time (like 1 minutes) ?

Methods

Assignment

Deadlines


Kick-off meeting

2020/5/27 10:30 - 12:00 Zoom: KAGRA Zoom2

Minutes

Simulation of the Type-A suspension to find optimum control strategy

Additional tasks

Largest magnet possible ?

Actuator efficiency of the currently installed actuators

Seismic noise coupling of the PF actuator


Meeting Materials

Current status and plan of CRY payload by Ushiba

Slides

Goal of the meeting

Decide the followings

Deliverables of the work

A document to answer the following questions

  1. Does the expected actuator noise level satisfy the KAGRA requirement ?
  2. Can we lock the interferometer with the modified actuators ?
    1. Is lock acquisition possible ? (ignore noise)
    2. Can we keep the lock with weak damping ? i.e., not injecting excess control noise from strong damping
  3. Can we damp all the resonant modes of the CRY payload within reasonable time (like 1 minutes) ?

Methods

Assignment

Deadline

KAGRA/Upgrades/PostO3Upgrades/CRYActuators (last edited 2020-05-27 14:27:01 by YoichiAso)