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| * Type B Past Week Summary * Mark and Fabian worked at Kamioka with Fujii-san: * We attempted to measure the tilt sensitivity of the accelerometers by adding shims under the legs but gave up when we discovered that picking up and putting down the accelerometer perturbs the zero point even without shims. We will probably need a special tilt stage to do this properly. * We took some frequency and Q measurements. The results were amplitude dependent. Joris thinks that this is due to not operating the accelerometers close enough to zero DC output. * We set up for a test of the geophone noise. One geophone is reading half the output of the others - one of the adapter cables is broken. * Hirata-san: * Received extra compensation masses and washed them. * Received PI guides, assembled them and shipped them to Kamioka. * Received backup set of pillar for security structure (with M10 instead of M12 holes at top). * Removed adhesive from base of BS flags in preparation for regluing. * Did assembly drawings for cable clamps and other add-on parts for BF and SF. * Type B ongoing issues * Wires * Need to decide RM wire thickness and order BS and RM wires. Lead time is a few days from Nilaco. * OSEMs * Akutsu-san is working to get wide-mouth OSEMs * Longer cables for BF->PI and SF->PI. * Connectors RECEIVED, cables being made. * Feedthrough Adapters * Connectors RECEIVED. * SR machining test ONGOING. * Installation stuff * "Ceiling" work in BS clean booth (removal of second floor section) scheduled for Fri 7/1. * Assembly frame construction scheduled for 7/4 * Ballast masses for payload * Initial batch received - ordered extra smaller ones to allow for adjustments. * Lower breadboard stuff * Installation to be incorporated into the procedure document. Mark/Takahashi to discuss. * Breadboard springs (in manufacture, expected end of July) * Nail-head parts - ordered with assembly frame, will arrive next week. * Documents * BS Assembly Procedure [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=4235| E1504235]], [[https://onedrive.live.com/redir?resid=D5CCFA70A378E0D0!195&authkey=!AM_usynuo9QI57g&ithint=folder,webloc|E1504235 draft]] |
=== Type B (Mark) === ==== Report for the week of 4/15 ==== * Fabian debugged a dead stepper on SR3 (broken driver channel) and a dead geophone on SRM (unplugged cable). He made another update to the table used by the Python script for the stepper driver MEDM screen to reflect the remapping. * Fabian monitored the pumpdown and he and Hirata-san did post-pumpdown checks of all the suspensions. They were all healthy. * Hirata-san participated in the health checks and learned about the computer systems. * Mark did major revisions to the MEDM menu on the OVERVIEW screen with scripts for making `safe.snap` files and snapshots of setpoints. He made the `safe.snap` files in directories under `/opt/rtcds/kamioka/k1/target` into symbolic links to files in `/opt/rtcds/userapps/release/vis/k1/burtfiles`, alongside the setpoint files, so that they could be backed up to the SVN (as at LIGO). * Mark did major updates to his `vistools.py` Python package for manipulating the suspensions (based on his LIGO `sustools.py`). He added entries for Type B suspensions to the internal database and added commands for manipulating SET and DCCTRL blocks. He also added commands to simulate pressing on the `CLEAR HISTORY` and `LOAD COEFFICIENTS` buttons. * Mark started updating the `TYPEB.py` Guardian definition file to use `vistools.py`. So far only the `ENGAGING_IP_CONTROL` state has been fully rewritten and tested, but other states will be simple adaptations. It should be easy to do Type A and other Guardians in the same style. ==== Report for the week of 4/22 ==== * Fabian debugged an anomaly he found in the SRM (klog 8672) and found it was OK if the BF was high enough (klog 8733). * Mark and Terrence worked on improvements to the Guardian and the vistools.py package. * We debugged a problem where vistools.py triggered channel access timeouts when a Vis object was created in a live Guardian (it worked fine in a plain iPython session or the interactive mode of the Guardian). It turns out that in the live mode of the Guardian, the Ezca instance used for accessing the suspension is not a global variable (contrary to the documentation) but is associated with the GuardState class. Worse, creating a second Ezca instance upsets things. We came up with a workaround to grab and reuse the Ezca object already defined. * Mark added many new functions to vistools.py, including one to read the BIO WD status, and a group to manipulate the OLSET and OLDCCTRL filter blocks. * Terrence rewrote the TYPEB.py Guardian from scratch in terms of functions from vistools.py. * We removed the RESET state. * We renamed the DCCTRL_ONLY state to FLOAT and reimplemented it to switch the DCCTRL INPUT switches off (instead of the HOLD switches on). * We revised the OL_DAMPING_ENGAGED and neighboring states (ALIGN, MISALIGN etc). * We changed the RTMs to remove the TM_OSEM_DAMP blocks and to have the SET blocks connect only to the DCCTRL blocks (not the DAMP blocks). * We updated the PAYLOAD and OVERVIEW screens to reflect the RTM changes. We also fixed some broken links and fields related to the BIO functions. ==== Plan for week of 4/29 ==== * Glorious 10-day break! ==== Vacation/Travel Info ==== * Terrence's next visit from 4/18 to 7/27. * Fabian's vacation 4/25 to 5/10. * Mark's US vacation from 5/22 to 6/11. * Mark's final day 6/28. |
Scraps of text for incorporation in the VIS Meeting Minutes
KAGRA/Subgroups/VIS/MeetingNAOJ
Type B (Mark)
Report for the week of 4/15
- Fabian debugged a dead stepper on SR3 (broken driver channel) and a dead geophone on SRM (unplugged cable). He made another update to the table used by the Python script for the stepper driver MEDM screen to reflect the remapping.
- Fabian monitored the pumpdown and he and Hirata-san did post-pumpdown checks of all the suspensions. They were all healthy.
- Hirata-san participated in the health checks and learned about the computer systems.
Mark did major revisions to the MEDM menu on the OVERVIEW screen with scripts for making safe.snap files and snapshots of setpoints. He made the safe.snap files in directories under /opt/rtcds/kamioka/k1/target into symbolic links to files in /opt/rtcds/userapps/release/vis/k1/burtfiles, alongside the setpoint files, so that they could be backed up to the SVN (as at LIGO).
Mark did major updates to his vistools.py Python package for manipulating the suspensions (based on his LIGO sustools.py). He added entries for Type B suspensions to the internal database and added commands for manipulating SET and DCCTRL blocks. He also added commands to simulate pressing on the CLEAR HISTORY and LOAD COEFFICIENTS buttons.
Mark started updating the TYPEB.py Guardian definition file to use vistools.py. So far only the ENGAGING_IP_CONTROL state has been fully rewritten and tested, but other states will be simple adaptations. It should be easy to do Type A and other Guardians in the same style.
Report for the week of 4/22
- Fabian debugged an anomaly he found in the SRM (klog 8672) and found it was OK if the BF was high enough (klog 8733).
- Mark and Terrence worked on improvements to the Guardian and the vistools.py package.
We debugged a problem where vistools.py triggered channel access timeouts when a Vis object was created in a live Guardian (it worked fine in a plain iPython session or the interactive mode of the Guardian). It turns out that in the live mode of the Guardian, the Ezca instance used for accessing the suspension is not a global variable (contrary to the documentation) but is associated with the GuardState class. Worse, creating a second Ezca instance upsets things. We came up with a workaround to grab and reuse the Ezca object already defined.
- Mark added many new functions to vistools.py, including one to read the BIO WD status, and a group to manipulate the OLSET and OLDCCTRL filter blocks.
- Terrence rewrote the TYPEB.py Guardian from scratch in terms of functions from vistools.py.
- We removed the RESET state.
- We renamed the DCCTRL_ONLY state to FLOAT and reimplemented it to switch the DCCTRL INPUT switches off (instead of the HOLD switches on).
- We revised the OL_DAMPING_ENGAGED and neighboring states (ALIGN, MISALIGN etc).
- We changed the RTMs to remove the TM_OSEM_DAMP blocks and to have the SET blocks connect only to the DCCTRL blocks (not the DAMP blocks).
- We updated the PAYLOAD and OVERVIEW screens to reflect the RTM changes. We also fixed some broken links and fields related to the BIO functions.
Plan for week of 4/29
- Glorious 10-day break!
Vacation/Travel Info
- Terrence's next visit from 4/18 to 7/27.
- Fabian's vacation 4/25 to 5/10.
- Mark's US vacation from 5/22 to 6/11.
- Mark's final day 6/28.