Differences between revisions 75 and 76
Revision 75 as of 2019-06-16 17:35:00
Size: 8602
Editor: MarkBarton
Comment:
Revision 76 as of 2019-06-17 15:42:02
Size: 9945
Editor: MarkBarton
Comment:
Deletions are marked like this. Additions are marked like this.
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 * Put FC on SRM-W and install it in its holder with 1.4 mm shims ready for possible use.  * Put First Contact on SRM-W optic and install it in its holder with 1.4 mm shims ready for possible use.
 * Check all pico drivers are on extension cords that can be unplugged from outside the cleanbooth (in case reset is needed).
=== BS ===
 * Add Tanaka-san's LVDT signal card.
=== SR2 ===
 * Add Tanaka-san's LVDT signal card.
=== SR3 ===
 * Add Tanaka-san's LVDT signal card.
=== SRM ===
 * Add Tanaka-san's LVDT signal card.
Line 63: Line 72:
 * Check pico adapter cables.  * Check where SRM pico cables came from and make sure there isn't one missing somewhere else.
Line 78: Line 87:
  * Fix DAC screen (split model issue).  * Fix DAC screen (split model issue).
 * Move overview.txt files from common to k1, edit screens
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== Guardian == == Guardian/RTM ==
Line 83: Line 93:

== RTM ==
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 * WD/Guardian related
  * Add temperature alarms.
  * Add secondary watchdog with lower threshold that puts all outputs to HOLD and then gets Guardian to ramp them down.
 * Add temperature alarms.
 * Add alarms for LV
DT actuation near limit (especially for GAS).
 * Add alarm for integral runaway in DCCTRL loops.
 * Change value of nominal in Guardian to 'ALIGNED' or the like.
* Add secondary watchdog with lower threshold that puts all outputs to HOLD and then gets Guardian to ramp them down.
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  * longitudinal displacement: NO   * --(longitudinal displacement: NO)--
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 * In the software modify the control feeback loop topology in order to have the same as in the real system.  * In the software modify the control feedback loop topology in order to have the same as in the real system.
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 * Install Tanaka-san's LVDT sig gen cards when available).
 * Install Tanaka-san's hardware watchdogs.
 * Test and permanently enable stepper remote enable system.
 * Install Tanaka-san's LVDT sig gen cards when available). Update [[KAGRA/Subgroups/VIS/TypeB/Status|Status]] and electronic item lists.
 * Install Tanaka-san's hardware watchdogs. Update [[KAGRA/Subgroups/VIS/TypeB/Status|Status]] and electronic item lists.
 * Enable stepper remote enable system (flip enable switches on stepper drivers) and do final test.
Line 158: Line 168:
 * Add useful info from Enzo's notebook to BSData/etc.  * Get scan of Enzo's notebook and post to JGWDoc.
 * Get scan of Terrence's notebook and post to JGWDoc.
 * Add useful info from notebooks to BSData/etc.'
 * Improve Thermometers page of Operations Manual.
 * Improve SDF page of Operations Manual.
 * Improve vistools.py page of Operations Manual (Mark).
 * Add Cameras page to Operations Manual.
 * Add ndscope page to Operations Manual.
Line 161: Line 178:
 * Design/procure/install permanent hard protective boxes.  * Design/procure/install permanent hard protective covers.
 * Consider getting camera covers as well (to stop light getting in and IR getting out).
Line 169: Line 187:
 * Consider flipping sign of H2 coil actuator (there is a -1 in COILOUTF for it).

VIS Type B To-Do List

Archived items are at ../ToDoOld.

Paper

  • Review Type Bp paper

  • Choose paper title -> "Vibration isolation systems for the beam splitter and signal recycling mirrors of the KAGRA gravitational wave detector"?

  • Create JGWDoc number for paper -> P1909836

  • Decide paper author list -> KAGRA Author List 2019?

  • Write Type B paper abstract
  • Write paper outline
  • Write Type B paper Section 1 Introduction
  • Vibration isolation systems in KAGRA
    • Write Section 2.1 Overview
      • Steal or reproduce Type Bp Figure 1 (optic layout)
      • Steal or reproduce Type Bp paper Figure 2 (suspension comparison)
  • Write Section 2.2 Requirements for Type B
  • Write Section 3 Design of the Type-B suspension
    • Write Section 3.1 Mechanical
      • Choose photo of Type B suspension in mid-air
      • Make diagram of Type B in vacuum chamber
    • Write Section 3.2 Sensors and Actuators
    • Write Section 3.3 Control and Damping
      • Make controls diagram like Type Bp paper Figure 7
  • Write Section 4 Measured performance
    • Write Section 4.1 Damping Time
      • Make decay time plot like Type Bp paper Figure 8
    • Write Section 4.2 Residual Velocity
    • Write Section 4.3 Residual Angular Fluctuations
    • Write Section 4.4 Vibration Isolation Performance
  • Write Section 5 Summary
  • Write Section 6 Acknowledgments
  • Write References Section
    • Find Type A reference
    • Find cryogenic payload reference
    • Find bKAGRA reference
    • Find LIGO-India reference
    • Find NS-NS detection reference

    • Find initial detection reference

Tunnel

  • Tidy up.
  • Move charging station to more convenient location (e.g., near -X entrance).
  • Find and inventory all gluing tools.
  • Put pointy-tipped screw in RM trolley for BS
  • Put First Contact on SRM-W optic and install it in its holder with 1.4 mm shims ready for possible use.
  • Check all pico drivers are on extension cords that can be unplugged from outside the cleanbooth (in case reset is needed).

BS

  • Add Tanaka-san's LVDT signal card.

SR2

  • Add Tanaka-san's LVDT signal card.

SR3

  • Add Tanaka-san's LVDT signal card.

SRM

  • Add Tanaka-san's LVDT signal card.

Shakedown/Characterization

BS

  • Measure decay time, rms with and without control.
  • Do geophone blending.

SR2

  • Measure decay time, rms with and without control.

  • Do FEA model of IRM side plates.
  • Do geophone blending.

SR3

  • Measure decay time, rms with and without control.
  • Put SR3 cleanbooth electronics in minirack.
  • Check pico adapter cables.
  • Do geophone blending.

SRM

  • Check where SRM pico cables came from and make sure there isn't one missing somewhere else.
  • Debug 240 Hz noise in LVDT.
  • Measure decay time, rms with and without control.
  • Check keystone lock screws in BF (on next vent).
  • Do geophone blending.

SDF

  • Document SDF in Operations Manual
  • Make SDF states for Type B, e.g.:
    • SAFE
    • DCCTRL-ONLY
    • ALIGNED-IN-AIR
    • ALIGNED-IN-VACUUM

MEDM

  • Fix DAC screen (split model issue).
  • Move overview.txt files from common to k1, edit screens

Guardian/RTM

  • Rethink Guardian to avoid going back to SAFE for minor problems.
  • Consider splitting Type B Guardian into tower and payload sections with possible third monitor Guardian overseeing both.
  • Make cycle times of BS models the same as for SRx.
  • Change the DAQ channel lists per Shoda-san's final design.

  • Remove TM_OSEM subsystem from payload model.
  • Remove GEOWHITEN from IP of top model.
  • Remove ISIINF->CART2EUL->ISIWIT from IM.

  • Add temperature alarms.
  • Add alarms for LVDT actuation near limit (especially for GAS).
  • Add alarm for integral runaway in DCCTRL loops.
  • Change value of nominal in Guardian to 'ALIGNED' or the like.
  • Add secondary watchdog with lower threshold that puts all outputs to HOLD and then gets Guardian to ramp them down.

Simulation

  • Create controls design description (cf LIGO-T1100378).

  • Get a good set of TFs and put them in a common directory:

    • Directory: /kagra/Dropbox/Subsystems/VIS/TypeBData/SR2/simulation/TF/

    • Content: diaggui xml files and regular text files.

  • Compare the Matlab prediction with the measurements.

    • In a reasonable way tune the parameters of the simulation in ordet to get a good agreement.

    • It should include resonant peaks not predicted by the simulation.

    • Write a klog about this.

  • Given the fact that Takanori's Matlab simulation provides the TFs in units of [m/N] calculate a calibration factor for each GAS LVDT and IP and IM virtual actuator, which are in units of [µm/cnt].

  • Collect the measurements of LVDT and OSEM readout noise and put them in a common directory:
    • Location: /kagra/Dropbox/Subsystems/VIS/TypeBData/SR2/simulation/sensor_readout_noise/
    • Content: duaggui xml files and regular text files.
  • Check Panwei's measurements of OSEM noise. Pay special attention to the conversion into m/rtHz from V/rtHz.
  • Calculate the readut noise of the virtual sensors from the readout noise of the real ones.
    • IP LVDT.

    • IP Geo: where's the data for SR2 geophones? There's information in entry 6106. For SRM the plots are at 8177 but where's the data?

    • GAS LVDT (no virtual sensors)

    • IM OSEMS

    • Oplev
  • Estimate coil driver noise. It seems this is not expected to contribute significantly but we should still know.
  • Convert real actuation noise to virtual actuation noise.
  • Check whether the Matlab simulation implements the output of the length sensing oplev.

  • Extract the filters designed by Enzo, Terrence and Lucia from the filter bank using Foton and write them in a format compatible with Takanori's simulation: IP LVDT, IP GEO, blending filters, GAS, IM, optic.

  • Check the whether the oplev takes into account the ground motion movement in
    • longitudinal displacement: NO

    • Pitch and yaw
  • In the simulation, what are the assumed coupling between
    • LVDT-L ==> OpLev-PTM.

    • IP GEO-L ==> OpLev-PTM.

    • Longitudinal ground motion ==> OpLev-PTM.

    • OSEM-L ==> OpLev-PTM

    • And the above quantities with Oplev-YTM.
  • Does the simulation take into account the 1/300 rads of the tunnel slope?
  • In the software modify the control feedback loop topology in order to have the same as in the real system.
  • Tune the filters in order to account for the differences between simulation and measurement.
  • As sanity check for the simulation, check the stability criteria and compare with Enzo's.
  • Ask whether there is a recent measurement of seismic motion at the the central room.

Electronics

  • Pick better resistor values for sat amps (to give closer to 32K open-light values).
  • Install Tanaka-san's LVDT sig gen cards when available). Update Status and electronic item lists.

  • Install Tanaka-san's hardware watchdogs. Update Status and electronic item lists.

  • Enable stepper remote enable system (flip enable switches on stepper drivers) and do final test.
  • Update BS Circuit diagram, D1503600
    • Make generic to Type B.

    • Note removal of LED/PD on TM OSEMs.

    • Add stepper remote enable system.

    • Add note about gender-changers and non-flipping feedthrough adapters.

    • Correct default stepper channel assignments and link to wiki for changes.

    • Remove note about steppers with limit switches (we didn't use them).

    • Include LVDT pin size (1 mm).

    • Include Stepper pin size (1.6 mm).

    • Undo renumbering of IP items.

    • Page 10: "DIO Card # 0" should be "DIO Card # 1"

    • Include OutConfigBoards on OL page (Sheet 18).

    • Update HPCD section to reflect:

      • All three GAS channels are on HPCD #1 and DIO Card #2, CNB cables, Sheet 13.

      • Three IP channels are on HPCD #0 and DIO Card #2, CNA cables, Sheet 15.

    • Include blank page for watchdog.

    • Include actual watchdog.

    • Include information on assignment of channels to feedthrough positions (or summarize on wiki and add link).

Documentation and Operation Manual

  • Get scan of Enzo's notebook and post to JGWDoc.
  • Get scan of Terrence's notebook and post to JGWDoc.
  • Add useful info from notebooks to BSData/etc.'
  • Improve Thermometers page of Operations Manual.
  • Improve SDF page of Operations Manual.
  • Improve vistools.py page of Operations Manual (Mark).
  • Add Cameras page to Operations Manual.
  • Add ndscope page to Operations Manual.

OLs

  • Design/procure/install permanent hard protective covers.
  • Consider getting camera covers as well (to stop light getting in and IR getting out).
  • Tweak whitening filter gains.

One Day, If Ever Needed

BS

  • Tune BS LBB (adjust table height, damper height) - DON'T BOTHER (unless there's an excuse to open the lower half of the tank).
  • Replace BS F0 thrust bearing - BIG JOB - NOT WORTH IT.
  • Replace BS F0 yaw adjuster - DO AT NEXT VENT AFTER PARTS ARE AVAILABLE.
  • Consider flipping sign of H2 coil actuator (there is a -1 in COILOUTF for it).

SR3

  • Replace chipped magnets (12x12x12 mm) in SR3 IP, H1 and H2.

SRM

  • Install Enomoto-kun's beam target plate (if/when available).

KAGRA/Subgroups/VIS/TypeB/ToDo (last edited 2019-12-18 12:38:30 by fabian.arellano)