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* Type B Past Week Summary * 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, including: * 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). * Information on how to identify the wires from the steppers and LVDTs so that the adapter cables can be plugged in properly. * Mark worked on schedule. * Hirata-san did drawings for new 8-mm maraging wires for Type A. * Hirata-san worked on PR/SR mirror box modifications with Shoda-san. |
=== Type B (Mark) === ==== Past week report ==== At Kamioka (Mark, Ohishi-san, Fabian, Enzo, Hirata-san, Yoshioka-kun, Kozu-kun): * We disconnected the SF/... section and reinstalled the F0-SF rod with the hex cable clamp attached. * We debugged an issue with the actuation (the real-time model needed rebooting). * We routed all the SF/... cables up to the bottom of the PI, and then to the feedthroughs. * We unlocked the F0 keystone and experimented to find the amount of mass needed on the SF (≈845 g). * We attached the SF trim mass, adjusting it laterally so that the SF was level in pitch and roll. * We corrected some errors on the MEDM screens (some broken links and Take/Restore Safe.snap buttons). * We cabled all the PI items through to the rack and did very basic testing. * We disconnected the security structure from the assembly frame and adjusted the PI till the SS was vertical. * We unlocked the IP and adjusted the PI jacks and FRs till the IP was centered. * We passed the halves of the LBB Cu damping ring (less the Cu) into the chamber and joined them. * We put the magnets on the LBB damper ring using the template. * We locked various combinations of keystones and measured the vertical resonance frequencies of the unlocked filters. * We spent time on getting the geophones working. The original descrambler adapters had gone missing, so Enzo created three new ones. We borrowed a cable to replace one that had broken. The geophone distributor (S1402167) failed (no power on the negative rail), and a replacement borrowed from SR3 (S1605513) kept switching off. ==== Plan for week of 9/13 ==== ==== Plan for week of 9/19 ==== No work Mon 9/18 (敬老の日)<<BR>> Mark, Fabian, Enzo, Ohishi-san, Hirata-san, Yoshioka-kun (Tue, Wed, Thu, Fri), Kozu-kun * Install LBB damper magnet rings in tank. * Remove tank lid. * * Install suspension. ==== Vacation Info ==== Mark: 10/16-24 |
Scraps of text for incorporation in the VIS Meeting Minutes
KAGRA/Subgroups/VIS/MeetingNAOJ
Type B (Mark)
Past week report
At Kamioka (Mark, Ohishi-san, Fabian, Enzo, Hirata-san, Yoshioka-kun, Kozu-kun):
- We disconnected the SF/... section and reinstalled the F0-SF rod with the hex cable clamp attached.
- We debugged an issue with the actuation (the real-time model needed rebooting).
- We routed all the SF/... cables up to the bottom of the PI, and then to the feedthroughs.
- We unlocked the F0 keystone and experimented to find the amount of mass needed on the SF (≈845 g).
- We attached the SF trim mass, adjusting it laterally so that the SF was level in pitch and roll.
- We corrected some errors on the MEDM screens (some broken links and Take/Restore Safe.snap buttons).
- We cabled all the PI items through to the rack and did very basic testing.
- We disconnected the security structure from the assembly frame and adjusted the PI till the SS was vertical.
- We unlocked the IP and adjusted the PI jacks and FRs till the IP was centered.
- We passed the halves of the LBB Cu damping ring (less the Cu) into the chamber and joined them.
- We put the magnets on the LBB damper ring using the template.
- We locked various combinations of keystones and measured the vertical resonance frequencies of the unlocked filters.
- We spent time on getting the geophones working. The original descrambler adapters had gone missing, so Enzo created three new ones. We borrowed a cable to replace one that had broken. The geophone distributor (S1402167) failed (no power on the negative rail), and a replacement borrowed from SR3 (S1605513) kept switching off.
Plan for week of 9/13
Plan for week of 9/19
No work Mon 9/18 (敬老の日)
Mark, Fabian, Enzo, Ohishi-san, Hirata-san, Yoshioka-kun (Tue, Wed, Thu, Fri), Kozu-kun
- Install LBB damper magnet rings in tank.
- Remove tank lid.
- Install suspension.
Vacation Info
Mark: 10/16-24