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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 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 |
=== Type B (Mark) === ==== Past week report ==== At Kamioka (Mark, Fabian, Enzo, Hirata-san): * Hirata-san and Sekine-san moved the tank lid and service port ring to the pallet with the crane and covered the open tank with the spare clean bag. * Hirata-san and Mark got the LBB damper rings assembled and installed. A joint part for the Cu ring needed to have holes enlarged because the hole pattern did not quite match that on the half-ring. The magnet ring is hanging in the chamber and the Cu ring is attached below it with clamps, ready to receive the rods that will hang down from the PI. * Hirata-san recounted all the unused cables. * Hirata-san installed the outrigger parts on the LBB, which will receive the rods coming down from the damper ring. * Enzo and Mark tested all the stepper motors. * Enzo and Mark debugged the PI horizontal LVDTs. One LVDT had a flaky connection and one card in the LVDT driver had three dead channels. Enzo created a fully working driver using parts from another driver that also had a faulty card. * Fabian adjusted the ballast mass on the SF to get good pitch/roll/vertical adjustment and attached it with screws. * Fabian set up the optical lever again (the PR2 team had repossessed the breadboard we had been using but Akutsu-san supplied another one). * Enzo and Mark tested the pico motors. The software is very unreliable, but we we able to confirm that the IM pitch pico works. * The whole team wrapped items and shut down equipment ahead of the power outage. ==== Plan for coming weeks ==== For more detail, see [[KAGRA/Subgroups/VIS/TypeB/ToDo]]. Week of 6/12: * Cabling: * Debug/fix PI vertical LVDTs #0 and #2. * Calibrate PI vertical LVDT. * Debug/fix geophone #1. * Set yoke on PI vertical LVDT (if necessary). * Cable and test PI yaw stepper. * Cable and test PI vertical stepper. * Cable and test PI horizontal steppers. * Cable and test PI horizontal LVDTs. * Calibrate PI horizontal LVDTs. * Prepare LBB. * Attach LBB outriggers and rod receptacles. * Prepare LBB Cu ring. * Remove from tank, fix incompletely threaded holes, reinstall in tank. * Lay down spacers to protect magnets (in next step). * Prepare LBB magnet ring. * Disassemble. * Pass pieces into tank. * Reassemble on top of Cu ring. * Install LBB damper. * Bind LBB damper rings together with slings. * Remove vacuum tank lid and ring. * Crane rings up to install height, hook LBB magnet ring and support LBB Cu ring by TBD method. * Crane suspension into tank. * Hook LBB Cu ring. * Hook LBB. * Crane vacuum tank lid+ring black on. * Remove vacuum tank lid (only). * Remove port covers where feedthroughs will go, move feedthroughs from assembly frame and install on vacuum tank ring. * Reconnect in-air cables. |
Scraps of text for incorporation in the VIS Meeting Minutes
KAGRA/Subgroups/VIS/MeetingNAOJ
Type B (Mark)
Past week report
At Kamioka (Mark, Fabian, Enzo, Hirata-san):
- Hirata-san and Sekine-san moved the tank lid and service port ring to the pallet with the crane and covered the open tank with the spare clean bag.
- Hirata-san and Mark got the LBB damper rings assembled and installed. A joint part for the Cu ring needed to have holes enlarged because the hole pattern did not quite match that on the half-ring. The magnet ring is hanging in the chamber and the Cu ring is attached below it with clamps, ready to receive the rods that will hang down from the PI.
- Hirata-san recounted all the unused cables.
- Hirata-san installed the outrigger parts on the LBB, which will receive the rods coming down from the damper ring.
- Enzo and Mark tested all the stepper motors.
- Enzo and Mark debugged the PI horizontal LVDTs. One LVDT had a flaky connection and one card in the LVDT driver had three dead channels. Enzo created a fully working driver using parts from another driver that also had a faulty card.
- Fabian adjusted the ballast mass on the SF to get good pitch/roll/vertical adjustment and attached it with screws.
- Fabian set up the optical lever again (the PR2 team had repossessed the breadboard we had been using but Akutsu-san supplied another one).
- Enzo and Mark tested the pico motors. The software is very unreliable, but we we able to confirm that the IM pitch pico works.
- The whole team wrapped items and shut down equipment ahead of the power outage.
Plan for coming weeks
For more detail, see KAGRA/Subgroups/VIS/TypeB/ToDo.
Week of 6/12:
- Cabling:
- Debug/fix PI vertical LVDTs #0 and #2.
- Calibrate PI vertical LVDT.
- Debug/fix geophone #1.
- Set yoke on PI vertical LVDT (if necessary).
- Cable and test PI yaw stepper.
- Cable and test PI vertical stepper.
- Cable and test PI horizontal steppers.
- Cable and test PI horizontal LVDTs.
- Calibrate PI horizontal LVDTs.
- Prepare LBB.
- Attach LBB outriggers and rod receptacles.
- Prepare LBB Cu ring.
- Remove from tank, fix incompletely threaded holes, reinstall in tank.
- Lay down spacers to protect magnets (in next step).
- Prepare LBB magnet ring.
- Disassemble.
- Pass pieces into tank.
- Reassemble on top of Cu ring.
- Install LBB damper.
- Bind LBB damper rings together with slings.
- Remove vacuum tank lid and ring.
- Crane rings up to install height, hook LBB magnet ring and support LBB Cu ring by TBD method.
- Crane suspension into tank.
- Hook LBB Cu ring.
- Hook LBB.
- Crane vacuum tank lid+ring black on.
- Remove vacuum tank lid (only).
- Remove port covers where feedthroughs will go, move feedthroughs from assembly frame and install on vacuum tank ring.
- Reconnect in-air cables.