Differences between revisions 1 and 9 (spanning 8 versions)
⇤ ← Revision 1 as of 2017-02-24 13:53:53 →
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Editor: MarkBarton
Comment:
← Revision 9 as of 2017-06-02 13:55:46 → ⇥
Size: 1077
Editor: MarkBarton
Comment:
Deletions are marked like this. Additions are marked like this.
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Things to remember/fix Things to remember/fix after BS Test Hang, before final hanging of BS.

 * 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.
 * Swap out temporary ballast mass in BF, SF.
 * 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.
 * Reclean stuff:
  * PI (remove Kapton tape etc, etc).
  * LLB damper stuff, especially Cu segments.
 * Adjust yoke on BF to put top of secondary at 6 mm above top of baseplate (or to give 0 counts at nominal height).
 * Return/replace borrowed parts:
  * Lock washers for LBB dampers
  * Temporary ballast mass (dog clamps) in BF.
 * BF GAS spring rebuild?
 * Check inside SF for lost ruler.
 * Tighten PI yaw return spring.

KAGRA VIS - Type B - BS Test Hang Issues

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

  • 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.
  • Swap out temporary ballast mass in BF, SF.
  • 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.
  • Reclean stuff:
    • PI (remove Kapton tape etc, etc).
    • LLB damper stuff, especially Cu segments.
  • Adjust yoke on BF to put top of secondary at 6 mm above top of baseplate (or to give 0 counts at nominal height).
  • Return/replace borrowed parts:
    • Lock washers for LBB dampers
    • Temporary ballast mass (dog clamps) in BF.
  • BF GAS spring rebuild?
  • Check inside SF for lost ruler.
  • Tighten PI yaw return spring.

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