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| ==== Report for week of 10/8 ==== * This was Panwei's last week (for now at least) - thanks for all the help! * Thanks also to Terrence for visiting again for the week. ===== SR3 ===== * Terrence and Mark finished setting up the LEN half of the OL (Simon had roughly placed the components). They ran a new cable for LEN in the cable tray and relaid the cable for TILT to get it off the floor. * Terrence worked on diagonalizing the LEN OL. A report is forthcoming. ===== SRM ===== * Mark installed a pair of power supplies in the SRM and copied settings across to the SRM real-time model. * Fabian did lots of rack cabling, including installing and connecting BIO cards. * Mark and Hirata-san checked and adjusted the pitch of the BF (with a bubble level) and the IM/... section (with the OL. * Mark and Panwei installed the sides of the IRM and the IM OSEMs. * Hirata-san hung the dummy load from the F0 and started compressing the blade. There was a significant lateral offset (≈2-3 mm towards the blade at 5:30) at first but Takahashi-san advised that it would probably improve with compression, and it did. * Mark and Hirata-san cleared off most of two optical tables and a set of shelves in the OMMT area that Type B had been using but were now required by Somiya-san and Ohishi-san. We still need to remove the geophone and OSEM testing setups. |
==== Report for the week of 4/8 ==== * Support of Type Bp * Mark made lots of Guardian improvements: * Used Guardian's timer functionality to drastically reduce the number of notifications during ramping. * Added new requestable states DCCTRL_ONLY and NEUTRAL (and associated transitional states) to facilitate testing. * Tidied up the code to use tabs consistently throughout for indentation. * Disabled the test for the IM-H coil driver WD (to work around the fact that only the relay in the chassis has been disabled, not the WD signals going to the BIO). * We opened the BS tank lid and offloaded a large IM-Y offset to F0-Y with manual adjustment of the broken yaw mechanism). * We opened the SR2 side doors and adjusted the V1 OSEM to mid-range. * Mark offloaded a large SR2 IM-Y offset to F0-Y. * Mark did health checks for BS, SR2 and SR3. * Fabian offloaded yaw from SRM and did the SRM health check. * Fabian updated the Python code for the stepper driver MEDM screen to reflect that two stepper drivers have different mappings to work around dead channels. * Fabian monitored pumpdown on Friday afternoon and will continue on Saturday. |
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| ===== SR2 ===== * Mark, Enzo and Hirata-san all inspected the lower section of the SR2 to see if there were any interference points that might explain some unexpected peaks in the TFs that weren't present before installation. There were no stops touching, but some TM OSEM cables were rubbing against each other. [??? Did the fix work?] * We removed the tank lid, and Enzo and Panwei inspected the cabling that had been done during Enzo's vacation and installed some new cables that had arrived. They also unlocked the IP. |
==== Plan for week of 4/15 ==== * Mark, Hirata-san at Kamioka Tue-Thu. * Fabian at Kamioka Mon-Wed. * All at f2f Meeting 4/19-21. * Post-pumpdown health checks. * Teach Hirata-san about the computer systems and control theory. * Work with Lucia to do blending of the IP LVDTs and geophones. * More Guardian improvements. * Update vistools.py (formerly LIGO sustools.py) for Type B and KAGRA, and have the TYPEB.py Guardian use it where appropriate. * Modify RT models and/or Guardian to revert to the SAFE state under control in all but the most extreme emergency situations (rather than suddenly shutting off all output). * Work on Type B paper. * Tidy up. * Gather and clean tools. * Gather and organize unused parts and fasteners. |
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| ==== Plan for week of 10/15 ==== * Mark, Enzo, Hirata-san and Fabian at Kamioka Mon-Fri. ===== SR2 ===== * Continue shakedown. ===== SRM ===== * Align IRM with IM. * Suspend/weigh/balance the BF/... section. * Build up the AF and SS to the SF level. * Install the SF. ==== To-Do Lists, Schedule ==== * [[KAGRA/Subgroups/VIS/TypeB/ToDoBS]] * [[KAGRA/Subgroups/VIS/TypeB/ToDoSR]] * [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=7779|JGW-L1807779 Type B Schedule (SR)]] ==== Vacation/Visitor Info ==== * Terrence: 10/29-11/2 at Kamioka. |
==== Vacation/Travel Info ==== * Mark at Mitaka 4/15. * f2f 4/19 (Friday), 4/20, 4/21. * Terrence's next visit from 4/18. * Fabian's vacation 4/26 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 4/8
- Support of Type Bp
- Mark made lots of Guardian improvements:
- Used Guardian's timer functionality to drastically reduce the number of notifications during ramping.
- Added new requestable states DCCTRL_ONLY and NEUTRAL (and associated transitional states) to facilitate testing.
- Tidied up the code to use tabs consistently throughout for indentation.
- Disabled the test for the IM-H coil driver WD (to work around the fact that only the relay in the chassis has been disabled, not the WD signals going to the BIO).
- Mark made lots of Guardian improvements:
- We opened the BS tank lid and offloaded a large IM-Y offset to F0-Y with manual adjustment of the broken yaw mechanism).
- We opened the SR2 side doors and adjusted the V1 OSEM to mid-range.
- Mark offloaded a large SR2 IM-Y offset to F0-Y.
- Mark did health checks for BS, SR2 and SR3.
- Fabian offloaded yaw from SRM and did the SRM health check.
- Fabian updated the Python code for the stepper driver MEDM screen to reflect that two stepper drivers have different mappings to work around dead channels.
- Fabian monitored pumpdown on Friday afternoon and will continue on Saturday.
Plan for week of 4/15
- Mark, Hirata-san at Kamioka Tue-Thu.
- Fabian at Kamioka Mon-Wed.
- All at f2f Meeting 4/19-21.
- Post-pumpdown health checks.
- Teach Hirata-san about the computer systems and control theory.
- Work with Lucia to do blending of the IP LVDTs and geophones.
- More Guardian improvements.
- Update vistools.py (formerly LIGO sustools.py) for Type B and KAGRA, and have the TYPEB.py Guardian use it where appropriate.
- Modify RT models and/or Guardian to revert to the SAFE state under control in all but the most extreme emergency situations (rather than suddenly shutting off all output).
- Work on Type B paper.
- Tidy up.
- Gather and clean tools.
- Gather and organize unused parts and fasteners.
Vacation/Travel Info
- Mark at Mitaka 4/15.
- f2f 4/19 (Friday), 4/20, 4/21.
- Terrence's next visit from 4/18.
- Fabian's vacation 4/26 to 5/10.
- Mark's US vacation from 5/22 to 6/11.
- Mark's final day 6/28.