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==== 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. 		==== 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 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.		 ==== 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.
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Mark: 10/16-24  * 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)