Differences between revisions 29 and 30
Revision 29 as of 2019-06-20 14:50:57
Size: 2108
Comment:
Revision 30 as of 2019-06-26 09:51:43
Size: 2103
Editor: naohisa.sato
Comment:
Deletions are marked like this. Additions are marked like this.
Line 34: Line 34:
 * Renovate unfixed Dsub connections around IP. (Type-A, EY only, [[https://www.dropbox.com/s/iatmy863o6cq7js/Renovate%20EY%20In-vacuum%20cabling.pdf?dl=0]] )
Line 44: Line 45:
 * Renovate unfixed Dsub connections around IP. (Type-A, EY only, [[https://www.dropbox.com/s/j5lrbzo4bybsdr8/Renovate%20EY%20In-vacuum%20cabling.pdf?dl=0|memo]] )

Ideas for VIS improvement/upgrade

Control

  • Inertial control for Type-B
  • Hierarchical control of Type-A
  • Organize tools for commissioners (auto-measurement, safe.snap, etc...)
  • Noise budgeting
  • Feedforward using seismometers
  • Auto health checking system
  • Measurement-based suspension modeling with system identification
  • Optimized feedback based on a cost function
  • Situation-sensitive filter adaptation with peripheral environmental monitors
  • Robust mode for surfing earthquakes without lock loss

Safety

  • Status monitor
  • Better watchdog

Mechanical Repair

  • ETMY GAS filters
  • ETMX F2 GAS
  • ITMX and ITMY F0 GAS
  • ITMY BF Yaw pico
  • BS F0 Yaw stepper
  • PRM IM magnet polarization
  • PR2 TM magnet polarizatio
  • Fishing rod repair:
    • SR3 SF: it does not move (klog 8658).
    • SR3 BF: it does not allows us to move the keystone to zero (klog 8658).
    • BS SF: it does not allow us to move the keystone to zero (klog 8645).
    • BS F0: it does not allow us to move the keystone to zero (klog 8645).

Electrical Repair

Mechanical Upgrade

  • OSTM suspension
  • Jigs for removing the payload part of Type-B/Bp without disassembling everything
  • Rotate the cryopayload of Type A for easy access of the mirror (cleaning, repair, etc)
  • Optical Lever Covers
  • ACCs for inertial damping.
  • New design of GAS filters considering 40kg TM (Memo).

    • Add limit swich for vertical fishing rod.
  • For Tyep-A, add a damping system for the 2nd-yaw-mode, where BF is at the node.

Electrical Upgrade

  • Connect the Release-sensor's signal to the digital system. (Type-A, If necessary.)
  • PR3 traverser in-vac cabling
  • [Type-A] add another oplev at MN-stage in order to degenerate P and R coupling.

KAGRA/Subgroups/VIS/BrainStorm/ToDo2019 (last edited 2019-09-13 11:52:43 by fabian.arellano)