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Archived items are at [[../ToDoOld]]. [[#EveryWeek |Every Week]] [[#ComingWeeks |Coming Weeks]] <<Anchor(EveryWeek)>> == Every Week == === Facilities === * Vacuum and roll floor. * Wipe ladders. * Tidy tools, parts. * Get stuff from [[../WishList]] <<Anchor(ComingWeeks)>> === 2019-01-21 === ==== Etc ==== * Work with Akutsu-san to get additional two camera viewports (for SR2 and SRM). * Open all dead geophones, replace preamps, test, seal, retest. * Get rid of all cable reels. ==== BS (top priority) ==== * Install a working set of geophones, e.g., from SR3. * Fix touching issue? * Adjust amount of mass on F0 keystone to get correct height, and secure in place. * Recenter the OL. ==== SRM ==== * Raise suspension 3.5 mm on jacks. * Check/improve payload alignment and IM OSEMs. Recheck optic pitch with OL as needed.\ * Adjust F0 keystone trim to give desired height and secure weights in place. * Install geophones and arc weights. * Center and tune IP. * Hook LBB and add just enough ballast to have it bouncing. * Add additional ballast to LBB to set desired height (only if someone will be putting stuff on it). * Wipe inside tank with Vectra-Alpha wipes and IPA. * Set up TILT OL. * Install Enomoto-kun's beam target plate (when available). ==== SR3 ==== * Survey optic height and raise suspension on jacks as necessary. * Reinstall OL LED (original one borrowed for SR2 - probably use new one to be supplied by Simon), probably change collimator, and realign OL. * Install camera viewport (already available). * Measure height of RM/TM relative to SS and height of SS relative to tank or Telada-san's reference. Raise suspension on jacks if necessary. * Add additional ballast to LBB to set desired height (only if someone will be putting stuff on it). ==== SR2 ==== * Survey optic height and raise suspension on jacks as necessary. * Remove tape, writing etc on PI and PI items. * Add ballast mass to LBB to have it bouncing. * Measure height of RM/TM relative to SS and height of SS relative to tank or Telada-san's reference. Raise suspension on jacks if necessary. === 2019-01-28 === ==== BS ==== ==== SRM ==== * Install camera viewport. (Mirapro will be available 1/28) * Setup LEN OL. ==== SR3 ==== * Install camera. * Run cables for camera. ==== SR2 ==== * Add camera viewport (when available). * Add new feedthrough to lower part of tank (with Izumi-san-tachi)? * Install cable for MIF pico on LBB (with Izumi-san-tachi)? * Add additional mass to LBB to have it at the desired height * Install camera. * Run cables for camera. == Tasks To Be Scheduled == ==== 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 and yaw adjuster - BIG JOB, DON'T BOTHER (unless lack of yaw adjustment becomes a major problem). ==== SR2 ==== ==== SR3 ==== ==== SRM ==== * Find two geophone cables used by Okutomi-san. (I looked in the second floor EXV room but didn't find them - Mark.) * Find one geophone cable ordered for SRM but missing. * Rearrange miswired geophone cable. * Rebuild defective geophone cable. * Put FC on SRM-W and install it in its holder with 1.4 mm shims ready for possible use. === Tunnel === * Get at least one BIO Converter chassis fully connected (CONTEC BIO card, WD and stepper motor chassis) for implementation and test of stepper motor reset function. * Check SR2, SR3 TM coil gains for magnet polarity compensation. * Replace chipped magnets (12x12x12 mm) in SR3 IP, H1 and H2. === Mitaka or remotely === * Write generic Type B Guardian; make BS and SR3 inherit from it; make analog WD optional for now (all suspensions will get them eventually). * (Continue to) soak the sapphire prisms off the dummy BS for reuse on the SRM metal mass. * Install damping filters for SR2. * Review DAC channel requests. * Split SRx real-time models? == ASAP == * --(Get picomotor drivers back on line.)-- * --(Debug BS BIO connections, especially PI IP.)-- === Main Assembly Sequence === * Necessary for phase-I★★★ * --(Modify IP LVDT damping filters to include set point.)-- * --(TFs.)-- * '''''EXCHANGE YAW/VERT FRs at F0''''' * Necessary for phase-II★★ * Debug BS geophones. * Flip circuit boards in BS geophones to make them the same as SRx. * Calibrate IP LVDT actuation against IP LVDT sensing. (Klog 3553? http://klog.icrr.u-tokyo.ac.jp/osl/?r=3553) * Design PI Sensor blending filter. * Tune the LVDT sensitivity * Measure IP period; adjust ballast mass. * At some point (remotely)★ * Improve OL offloading. * Improve GAS offloading. * Spectral analysis of Oplev. * Design, install angular lock servo using OL. (Almost done for phase-I) * Adjust gains and debug damping for IM OSEMs and GAS LVDTs. (Almost done for phase-I) * Subtract DC level of Geophones. * Spectra analysis of PI sensors (PI LVDTs and Geophones). * Calibrate IP LVDT sensing against IP LVDT actuation, IP FRs. * Set all EQ stops to TBD clearance. * Modify the model for IP coil driver control === Documentation and Operation Manual === * Add useful info from Enzo's notebook to BSData. <<Anchor(RealBSHang)>> == Tasks Not To Forget == === Major Tasks === * --(Move safety bars from BS AF area to SR2 area.)-- * Update circuit diagram. * (Time permitting) Try adding mass to IP. * Update BS Install Procedure with screenshots from new on-assembly-frame 3D CAD. * Finish assembly drawing for LBB and LBB damper ring and post on JGWDoc (Hirata-san). * Figure out how to make PI yaw adjustment reliable. === Minor Tasks === ==== Mechanical ==== |
Archived items are at ../ToDoOld. == Commisioning == === Noise budget === * Inject bandwidth limited noise into the BS payload degrees of freedom in order to identify peaks in DARM. There's a list of resonance frequencies in the control room. * Measure transfer functions from BS payload to DARM and calculate noise budget. Yamada-kun has already measured some and, as far as I rememeber from the commissionig meeting on Tuesday, Shoda-san has been assigned to measure more after the engineering run. === Real-time model === * Install BS real-time model. Changes are one additional filter output monitor for the bandpass filters (for the OBSERVATION state) and the path for ASC Terrences's method for control. * Compile and install SR's real-time models. Similar modifications as for the BS. * Medm screens have not been modified for the implemetation of Terrence's method. * Add DAQ channels to the tower part real-time model for the output of the control filters, especially for the IP. * Add a monitor for the total amount actuation of the IP coild driver (damp+DC) and add it as a DAQ channel. === Guardian === * Edit Guardian in order to speed up the engaging and disegaging of the control loop in the different stages. In TYPEB.py file comment out some calls to waitForRamp function: * In '''beginControlSequence''', lines 159, 160, 162, 163. * In '''disengageControlSequence''', lines 218, 219, 224, 225. After the change Guardian still has to be tested. * Apparently when the payload trips Guardian doesn't turn the IM optic align block gain back to 1 after recovery. (Reported by Sheila for the BS in klog [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=12110|12110]]). === Medm screens === * '''The IM-H coil drivers with disabled hardware watchdog produce a false trip signal.''' From the medm screens remove the hardware watchdog indicator for IM-H. This is common for all Type B suspensions. The ideal solution would be to disable the hardware warning signal system instead but there's no time for that now. * '''The BS TM coil driver with disabled hardware watchdog produces a false trip signal.''' This is harder to solve because only BS is affected by this. == 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)-- -> [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=9836|P1909836]] * --(Decide paper author list)-- -> KAGRA Author List 2019? * --(Write Type B paper abstract)-- * --(Write paper outline)-- * --(Write Type B paper "Introduction")-- * Vibration isolation systems in KAGRA * --(Write "Overview")-- * Steal or reproduce Type Bp Figure 1 (optic layout) * Steal or reproduce Type Bp paper Figure 2 (suspension comparison) * Write Requirements for Type B * Write "Design of the Type-B suspension" * --(Write "Mechanical")-- * Choose photo of Type B suspension in mid-air * Make diagram of Type B in vacuum chamber * Write "Sensors and Actuators" * Write "Optical Levers" * Write "Control and Damping" * Make controls diagram like Type Bp paper Figure 7 * Write "Measured performance" * Write "Damping Time" * Make decay time plot like Type Bp paper Figure 8 * Write "Residual Velocity" * Write "Residual Angular Fluctuations" * Write "Vibration Isolation Performance" * Write "Summary" * --(Write "Acknowledgments")-- -> Used 2018-09 version - need to check if there's a newer one. * Compile "References" * --(Find NS-NS detection reference)-- * --(Find initial detection reference)-- * Find Type A reference * Find cryogenic payload reference * Find bKAGRA reference * Find LIGO-India reference == Tunnel == * Tidy up. * Move charging station to more convenient location (e.g., near -X entrance). * Find and inventory all gluing tools. |
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| * --(Return/replace temporary ballast mass (dog clamps).)-- * Characterize replacement F0. * --(Wipe/clean arc weights that were rained on.)-- <<Anchor(elec)>> ==== Electrical ==== |
* 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 === * '''Get parts for F0 yaw adjuster - ASAP.''' * 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 [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=10294|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 [[https://dcc.ligo.org/LIGO-T1100378/public|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 [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=6106|6106]]. For SRM the plots are at [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=8177|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 [[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. |
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| * --(Make generic to Type B.)-- | |
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| * Organize stepper reset system and watchdog BIO. * Include information on assignment of channels to feedthrough positions. * Reflect gender-changers and non-flipping feedthrough adapters. * Reflect actual cable lengths. * Include LVDT pin size (1 mm). * Include Stepper pin size (1.6 mm). |
* --(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).)-- |
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==== Real-time and SUMCON models ==== * Create SUMCON models for full BS and major installation milestones. * Create controls design description (cf [[https://dcc.ligo.org/LIGO-T1100378/public|LIGO-T1100378]]). * Make table of ADC/DAC assignments and check for consistency with D1503600 and k1visbs (Enzo, Mark) * Understand/document/debug Kokeyama-san's DIO stuff. * Measure LPCD and HPCD output filter response. * Design and install software compensation filters for LPCD and HPCD output filters. |
* --(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 (Next Vent, or O4) == === BS === * Tune BS LBB (adjust table height, damper height) - do as part of Mid-Sized Baffle installation. * Tune IP to slightly lower frequency (better than current 0.08 Hz, but not as risky as original 0.04 Hz). Experiment with different amounts of mass over each IP leg to reduce L/T/Y cross coupling. Do at same time as Mid-Sized Baffle installation. * Replace BS F0 yaw adjuster - Do at same time as Mid-Sized Baffle installation, if parts are available. * Replace BS F0 thrust bearing - BIG JOB - NOT WORTH IT. * 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). |
VIS Type B To-Do List
Archived items are at ../ToDoOld.
Commisioning
Noise budget
- Inject bandwidth limited noise into the BS payload degrees of freedom in order to identify peaks in DARM. There's a list of resonance frequencies in the control room.
- Measure transfer functions from BS payload to DARM and calculate noise budget. Yamada-kun has already measured some and, as far as I rememeber from the commissionig meeting on Tuesday, Shoda-san has been assigned to measure more after the engineering run.
Real-time model
- Install BS real-time model. Changes are one additional filter output monitor for the bandpass filters (for the OBSERVATION state) and the path for ASC Terrences's method for control.
- Compile and install SR's real-time models. Similar modifications as for the BS.
- Medm screens have not been modified for the implemetation of Terrence's method.
- Add DAQ channels to the tower part real-time model for the output of the control filters, especially for the IP.
- Add a monitor for the total amount actuation of the IP coild driver (damp+DC) and add it as a DAQ channel.
Guardian
- Edit Guardian in order to speed up the engaging and disegaging of the control loop in the different stages. In TYPEB.py file comment out some calls to waitForRamp function:
In beginControlSequence, lines 159, 160, 162, 163.
In disengageControlSequence, lines 218, 219, 224, 225.
Apparently when the payload trips Guardian doesn't turn the IM optic align block gain back to 1 after recovery. (Reported by Sheila for the BS in klog 12110).
Medm screens
The IM-H coil drivers with disabled hardware watchdog produce a false trip signal. From the medm screens remove the hardware watchdog indicator for IM-H. This is common for all Type B suspensions. The ideal solution would be to disable the hardware warning signal system instead but there's no time for that now.
The BS TM coil driver with disabled hardware watchdog produces a false trip signal. This is harder to solve because only BS is affected by this.
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 "Introduction"
- Vibration isolation systems in KAGRA
Write "Overview"
- Steal or reproduce Type Bp Figure 1 (optic layout)
- Steal or reproduce Type Bp paper Figure 2 (suspension comparison)
- Write Requirements for Type B
- Write "Design of the Type-B suspension"
Write "Mechanical"
- Choose photo of Type B suspension in mid-air
- Make diagram of Type B in vacuum chamber
- Write "Sensors and Actuators"
- Write "Optical Levers"
- Write "Control and Damping"
- Make controls diagram like Type Bp paper Figure 7
- Write "Measured performance"
- Write "Damping Time"
- Make decay time plot like Type Bp paper Figure 8
- Write "Residual Velocity"
- Write "Residual Angular Fluctuations"
- Write "Vibration Isolation Performance"
- Write "Damping Time"
- Write "Summary"
Write "Acknowledgments" -> Used 2018-09 version - need to check if there's a newer one.
- Compile "References"
Find NS-NS detection reference
Find initial detection reference
- Find Type A reference
- Find cryogenic payload reference
- Find bKAGRA reference
- Find LIGO-India 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
Get parts for F0 yaw adjuster - ASAP.
- 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.
- 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
- 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 (Next Vent, or O4)
BS
- Tune BS LBB (adjust table height, damper height) - do as part of Mid-Sized Baffle installation.
- Tune IP to slightly lower frequency (better than current 0.08 Hz, but not as risky as original 0.04 Hz). Experiment with different amounts of mass over each IP leg to reduce L/T/Y cross coupling. Do at same time as Mid-Sized Baffle installation.
- Replace BS F0 yaw adjuster - Do at same time as Mid-Sized Baffle installation, if parts are available.
- Replace BS F0 thrust bearing - BIG JOB - NOT WORTH IT.
- 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).