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| * Fabian, Mark and Liu-kun did BS installation at Kamioka: * Debugged the issue with the BF keystone being tilted enough to cause rubbing on the yoke for the magnets. It was solved by moving the yoke ≈1 mm taking advantage of the oversized holes. * Measured the height of the payload as a function of trim mass. The BF spring seems to have a slightly lower load capacity and a rather higher spring constant than when it was remeasured by Hirata-san. * Removed IM trim mass to set the average height of the keystone to the CAD value. * Moved IM trim mass around to set the pitch of the dummy BS. |
* Mark (with Enzo) did initial TFs on the BF. * Did fixed-sine TFs on individual OSEMs at low frequency to check actuator polarity (klog [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=2176 | 2176]] and [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=2182|2182]]). * Set gains in the COILOUTF block to compensate for actuator polarity. * Mark (with Enzo) did a free-swing measurement on the BS after earthquake of 11/22 (klog [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=2182|2182]]). * Results suspicious (noted by Shoda-san): too much difference between OSEMs - horizontal showing much less motion than vertical. * Possible rubbing in horizontal. * May need a trip to Kamioka. * Mark (with Enzo) made corrections and improvements to many of the MEDM screens (klog [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=2176 | 2176]] and [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=2182|2182]]). * Main overview screen was not generic in many places, and links to GDS_TP screens were broken. * ADC monitor screen referenced bad channels with LIGO-style names. * DAC monitor screen was not generic and did not support IM OSEMs. * Watchdog IM OSEM AC band limit filter screen was a copy of the TM one. * Watchdog TM OSEM AC band limit filter screen appears to be getting OL signals as input - needs model changes to fix. * The zoomed screens for IM OSEM centering were called incorrectly and did not work. * Various screens had LIGO-style channel names as labels. * Mark did a draft of D1603600-v12 reflecting the new assignment of IM OSEMs to DAQ channels (#4-9 are now V1, V2, V3, H1, H2, H3 rather than H1, H2, ...) from last Friday (the wiring was changed to reflect the model). * Mark worked on schedule. |
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| * TBD. |
Scraps of text for incorporation in the VIS Meeting Minutes
KAGRA/Subgroups/VIS/MeetingNAOJ
- Type B Past Week Summary
- Mark (with Enzo) did initial TFs on the BF.
Mark (with Enzo) did a free-swing measurement on the BS after earthquake of 11/22 (klog 2182).
- Results suspicious (noted by Shoda-san): too much difference between OSEMs - horizontal showing much less motion than vertical.
- Possible rubbing in horizontal.
- May need a trip to Kamioka.
Mark (with Enzo) made corrections and improvements to many of the MEDM screens (klog 2176 and 2182).
- Main overview screen was not generic in many places, and links to GDS_TP screens were broken.
- ADC monitor screen referenced bad channels with LIGO-style names.
- DAC monitor screen was not generic and did not support IM OSEMs.
- Watchdog IM OSEM AC band limit filter screen was a copy of the TM one.
- Watchdog TM OSEM AC band limit filter screen appears to be getting OL signals as input - needs model changes to fix.
- The zoomed screens for IM OSEM centering were called incorrectly and did not work.
- Various screens had LIGO-style channel names as labels.
- Mark did a draft of D1603600-v12 reflecting the new assignment of IM OSEMs to DAQ channels (#4-9 are now V1, V2, V3, H1, H2, H3 rather than H1, H2, ...) from last Friday (the wiring was changed to reflect the model).
- Mark worked on schedule.
- Hirata-san