Differences between revisions 8 and 11 (spanning 3 versions)
Revision 8 as of 2017-05-26 14:25:42
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Editor: MarkBarton
Comment:
Revision 11 as of 2017-06-19 10:12:23
Size: 1962
Editor: MarkBarton
Comment:
Deletions are marked like this. Additions are marked like this.
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== Major Tasks ==
 * Final ballast mass design/production for BF and SF (Fabian, Hirata-san).
 * Get final OSEM cables (six of 1.7 m, two of 2.2 m, two of 2.4 m; Sato-san).
 * Possible rebuild of BF and/or SF
  * Set up filter build/test stand.
  * Get filter test weights.
  * Find spare BF blade(s).
 * Prepare real BS:
  * Coordinate with Hirose-san.
  * Book transport of mirror (Kashiwa to KAGRA)
  * Gather mirror box, gluing supplies, prisms, magnets, new flags, new flag jigs.
  * Solve problem of lack of scribe line on one side of BS (Mark, Hirata-san).
  * Organize cleanroom gear for Kashiwa trip(s).
  * Put magnets in flags.
  * Glue flags/prisms at Kashiwa.
 * Reclean stuff:
  * PI (remove Kapton tape etc, etc).
  * LLB damper stuff, especially Cu segments.

== Minor Tasks ==
=== Mechanical ===
 * Swap out temporary ballast mass in BF, SF.
 * Return/replace borrowed parts:
  * Lock washers for LBB dampers
  * Temporary ballast mass (dog clamps) in BF.
  * Wide-mouth OSEMs from RM to Akutsu-san
 * Adjust height of crossbars below BF.
 * If possible, fix galled pole in BF level of EQ stop.
 * Swap in new F0-SF maraging rod (with 8-mm heads) and new receptacles to match.
 * Check inside SF for lost ruler.
 * Tighten PI yaw return spring.
 * Get Cu O-rings for feedthroughs.


=== Electrical ===
 * Decide final in-vacuum and in-air cable routing.
 * Calibrate all LVDTs.
Line 8: Line 45:
 * Swap out temporary ballast mass in BF.
 * If possible, fix galled pole in BF level of EQ stop.
 * Swap in new F0-SF maraging rod (with 8-mm heads) and new receptacles to match.
 * Reclean stuff:
  * PI (remove Kapton tape etc, etc).
  * LLB damper stuff, especially Cu segments.
 * Return/replace borrowed parts:
  * Lock washers for LBB dampers
  * Temporary ballast mass (dog clamps) in BF.
 * BF GAS spring
 * Check inside SF for lost ruler.
 * Adjust yoke on BF to put top of secondary at 6 mm above top of baseplate (or to give 0 counts at nominal height).

KAGRA VIS - Type B - BS Test Hang Issues

Things to remember/fix after BS Test Hang, before final hanging of BS.

Major Tasks

  • Final ballast mass design/production for BF and SF (Fabian, Hirata-san).
  • Get final OSEM cables (six of 1.7 m, two of 2.2 m, two of 2.4 m; Sato-san).
  • Possible rebuild of BF and/or SF
    • Set up filter build/test stand.
    • Get filter test weights.
    • Find spare BF blade(s).
  • Prepare real BS:
    • Coordinate with Hirose-san.
    • Book transport of mirror (Kashiwa to KAGRA)
    • Gather mirror box, gluing supplies, prisms, magnets, new flags, new flag jigs.
    • Solve problem of lack of scribe line on one side of BS (Mark, Hirata-san).
    • Organize cleanroom gear for Kashiwa trip(s).
    • Put magnets in flags.
    • Glue flags/prisms at Kashiwa.
  • Reclean stuff:
    • PI (remove Kapton tape etc, etc).
    • LLB damper stuff, especially Cu segments.

Minor Tasks

Mechanical

  • Swap out temporary ballast mass in BF, SF.
  • Return/replace borrowed parts:
    • Lock washers for LBB dampers
    • Temporary ballast mass (dog clamps) in BF.
    • Wide-mouth OSEMs from RM to Akutsu-san
  • Adjust height of crossbars below BF.
  • If possible, fix galled pole in BF level of EQ stop.
  • Swap in new F0-SF maraging rod (with 8-mm heads) and new receptacles to match.
  • Check inside SF for lost ruler.
  • Tighten PI yaw return spring.
  • Get Cu O-rings for feedthroughs.

Electrical

  • Decide final in-vacuum and in-air cable routing.
  • Calibrate all LVDTs.
  • Remove cling wrap in BF and install vacuum-compatible heat shrink.
  • Remove cling wrap on connections for PI vertical stepper and install vacuum-compatible heat shrink (needs wider diameter heat shrink or smaller pins).
  • Rewire PI horizontal steppers with vacuum-compatible cable.
  • Adjust yoke on BF to put top of secondary at 6 mm above top of baseplate (or to give 0 counts at nominal height).

KAGRA/Subgroups/VIS/TypeB/BSTestHangIssues (last edited 2017-06-19 10:12:23 by MarkBarton)