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MIF (General)
masayuki.nakano - 19:51 Monday 25 May 2020 (14421) Print this report
IFO recovery 0525

The IFO has been recovered. 

  • LSC guardian could reach to OBSERVATION
  • Due to the power drop of the GRY, the FNC cannot been locked. Therefore, I and YamaT-sensei enter the mine and align the green fiber as suggested by Sugimoto-kun 
  • I changed the FNC gain to -20 dB and GRY-PDH gain to 6. The UGF of PDH loop is around 4 kHz.
  • YamaT-sensei fixed the IX Tcam.
  • The alignment is terrible. I guess we need to tweak the IMMTs.
Comments to this report:
takaaki.yokozawa - 7:17 Tuesday 26 May 2020 (14424) Print this report

I found the PRM is aligned state and REFL PDA1 DC value is about 20mW at maximum.

Should we keep the PRM mirror aligned stgate or misaligned state?

 

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