Differences between revisions 94 and 218 (spanning 124 versions)
⇤ ← Revision 94 as of 2016-12-08 17:21:07 →
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Editor: MarkBarton
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← Revision 218 as of 2018-01-26 11:07:17 → ⇥
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Editor: MarkBarton
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Deletions are marked like this. Additions are marked like this.
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 * Mark and Fabian debugged the rubbing issue with the BS. It turns out the EQ stops between the IRM and IM are so misaligned that they can't be used at all. This misalignment was noted on 10/27 klog [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=2090|2090]] but seems to have gotten worse. With the stops removed, the OSEMs (adjusted on 10/27) are still fairly well centered, so the problem probably predates the earthquake of 11/1.
 * Mark worked on the PR2 rack:
  * Rearranged the items in the rack to make space for new AA and AI chassis at the bottom near the IO chassis.
  * Replaced the AA chassis, which had had a group of channels marked as bad by Michimura-san.
  * Installed a second AA chassis and a second AI chassis in the rack.
  * Installed a second ADC card and a second DAC card in the IO chassis.
  * Modified the k1ioppr2 real-time model to recognize the new ADC/DAC cards and also the extra DIO cards installed previously.
  * Attempted to modify the k1visbs real-time model to recognize the new ADC/DAC cards. Unfortunately, apparently due to changes to library parts made by Okutomi-san, neither the original model or Okutomi-san's new model can be successfully compiled and installed anymore! Debugging is ongoing.
 * Fabian finished the redesign of the EQ stops for the BS RM. Hirata-san will refine the 3D design and do drawings (estimated 1/2 day).
 * Fabian redesigned the cable clamp on top of the multi-purpose cube (on the BS RM) to avoid the need for clips. (These are too easily moved when the cables are moved during installation and removal of the safety bar between the RM and IM, which has to be done many times.) He will do a similar one for SR.
 * Mark and Fabian reviewed the previous iJect payload parts order and flagged the items that need updating.
 * Mark worked on task lists and schedule, but has not been able to log into the server to upload anything.
 * Hirata-san finished the PR/SR mirror box modifications.
 * Hirata-san washed parts (screws and collets).		 === Type B (Mark) ===
==== Report for week of 1/15 ====
 * We swapped in the other available BF, and it was rather better: only 0.3 mm of keystone tilt rather than 1.3 mm. We will use it for the SR2 and then think about whether we want to use or rebuild the original one.
 * We finished the preparation of the second BF, setting the yoke, adding the new-style cable clamps etc.
 * We changed the 1.6 mm sockets on the BF LVDT cable to 1.0 mm ones to match the pins on the LVDT wires. The specification of the cable in D1503901 was apparently wrong. We will update it (today) before doing the cable order for the SR3 and SRM.
 * We received, unpacked and temporarily stored a shipment of weights and other parts that will be used to check the load capacity of the top filters.
 * We updated the BS real-time model and screens, adding support for a damping filter common to both the OL-TM and OL-IM paths, per Izumi-san's suggestion in G1807653.
 * We set up the router for the SR2 rack and got the SR2_IM pico driver and both stepper motors on the network (the SR2_BF pico is still on order).
 
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   ==== Plan for week of 1/29 ====
 * Enzo at Mitaka 1/29 and most of 1/30, then vacation.
 * Kozu-kun away.
 * All others at Kamioka.
 * Test IM picos and BF yaw pico.
 * Calibrate LVDT.
 * Install ballast mass in BF.
 * Build IRM around IM.
 * Cable/test/adjust IM OSEMs.
 * Time permitting, do TFs from IM OSEMs to themselves and to optical sensor.

==== Vacation Info ====
 * Enzo 1/30-2/19 (at Mitaka 1/29, part of 1/30)
 * Kozu-kun 1/29-2/2

Scraps of text for incorporation in the VIS Meeting Minutes

KAGRA/Subgroups/VIS/MeetingNAOJ

Type B (Mark)

Report for week of 1/15

  • We swapped in the other available BF, and it was rather better: only 0.3 mm of keystone tilt rather than 1.3 mm. We will use it for the SR2 and then think about whether we want to use or rebuild the original one.
  • We finished the preparation of the second BF, setting the yoke, adding the new-style cable clamps etc.
  • We changed the 1.6 mm sockets on the BF LVDT cable to 1.0 mm ones to match the pins on the LVDT wires. The specification of the cable in D1503901 was apparently wrong. We will update it (today) before doing the cable order for the SR3 and SRM.
  • We received, unpacked and temporarily stored a shipment of weights and other parts that will be used to check the load capacity of the top filters.
  • We updated the BS real-time model and screens, adding support for a damping filter common to both the OL-TM and OL-IM paths, per Izumi-san's suggestion in G1807653.
  • We set up the router for the SR2 rack and got the SR2_IM pico driver and both stepper motors on the network (the SR2_BF pico is still on order).

Plan for week of 1/29

  • Enzo at Mitaka 1/29 and most of 1/30, then vacation.
  • Kozu-kun away.
  • All others at Kamioka.
  • Test IM picos and BF yaw pico.
  • Calibrate LVDT.
  • Install ballast mass in BF.
  • Build IRM around IM.
  • Cable/test/adjust IM OSEMs.
  • Time permitting, do TFs from IM OSEMs to themselves and to optical sensor.

Vacation Info

  • Enzo 1/30-2/19 (at Mitaka 1/29, part of 1/30)
  • Kozu-kun 1/29-2/2

KAGRA/Subgroups/VIS/TypeB/Minutes (last edited 2022-10-28 10:02:46 by fabian.arellano)