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VIS (IX)
ryutaro.takahashi - 21:01 Thursday 11 March 2021 (16238) Print this report
Comment to Setup of IP (16199)

[Takahashi, Sato, Horiuchi]

  1. Revised the direction of geophone pre-amps.
  2. Confirmed signals of the geophones on the DGS.
  3. Adjusted the ballast rings on the IP. The geophone pods (35.4kg), TF ballast (52.7kg) and big block (1.8kg) were added. Three t=38 ballast rings (51.6kg), three t=19 ballast rings (25.8kg) and the ACCs (8.9kg) were removed. Total start weight was +3.6kg from setting in O3.
  4. Tuned the IP. The resonant frequency reached less than 60mHz.
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