Differences between revisions 203 and 221 (spanning 18 versions)
⇤ ← Revision 203 as of 2017-11-10 09:54:31 →
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Editor: MarkBarton
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← Revision 221 as of 2018-01-26 12:15:13 → ⇥
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Editor: MarkBarton
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==== Past two weeks report ====
At Kamioka (Mark, Enzo, Kozu-kun):
 * Supported IA team.
 * Replaced LPCDs for IM OSEMs with HPCDs for increased pitch/yaw range.
 * Re-zeroed OL after significant change of beam position during IA.
 * Re-laid-out OL to improve focus of lens to LEN QPD.
 * Offloaded the pitch/yaw actuation at the IM OSEMs using the IM pitch/yaw picos.
 * Enzo worked on design of control loops using the OL.
 * Kozu-kun worked on diagonalizing the OL. 		==== 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 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).
 * We did prep for the top filter test:
  * We received, unpacked and temporarily stored a shipment of weights and other parts.
  * We removed the top crossbars from the SR3 assembly frame.
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Mitaka (Fabian, Hirata-san):
 * Hirata-san published his inventory of SR parts on Dropbox. 		 
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==== Plan for week of 11/13 ==== ==== 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.
 * Make in-air pico adapter cables.
 * Test IM picos and BF yaw pico.
 * Test FR.
 * Calibrate LVDT.
 * Get screws for ballast mass from Takahashi-san.
 * Install ballast mass in BF.
 * Set up for F0 test.
  * Lower IM crossbars in SR3 assembly frame.
  * Open curtain on SR3 crane slot.
  * Set up dummy load (weight carrier, rods etc).
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Kamioka: Mark
 * Attend commissioning workshop at U Toyama.
 * Be person-on-site for BF work.
 * Set up for mirror gluing.		 ==== Plan for week of 2/5 ====
 * Enzo on vacation; all others at Kamioka.
 * 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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Mitaka: Fabian and Hirata-san
 * SR procurement.
 * New PI GAS FR design.
 * BS LBB ballast mass design.
 * SR cable lamp design.		 ==== Plan for week of 2/12 ====
 * Enzo on vacation; all others at Kamioka.
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Mitaka: Enzo and Kozu-kun (Wed, Thu)
 * Servos
 * TFs of BF
 * Documentation		 ==== 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 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).
  • We did prep for the top filter test:
    • We received, unpacked and temporarily stored a shipment of weights and other parts.
    • We removed the top crossbars from the SR3 assembly frame.

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.
  • Make in-air pico adapter cables.
  • Test IM picos and BF yaw pico.
  • Test FR.
  • Calibrate LVDT.
  • Get screws for ballast mass from Takahashi-san.
  • Install ballast mass in BF.
  • Set up for F0 test.
    • Lower IM crossbars in SR3 assembly frame.
    • Open curtain on SR3 crane slot.
    • Set up dummy load (weight carrier, rods etc).

Plan for week of 2/5

  • Enzo on vacation; all others at Kamioka.
  • Build IRM around IM.
  • Cable/test/adjust IM OSEMs.
  • Time permitting, do TFs from IM OSEMs to themselves and to optical sensor.

Plan for week of 2/12

  • Enzo on vacation; all others at Kamioka.

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)