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Kokeyama, Nakano, Ge, Tanioka, Yamakoh, Fujikawa, Green
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 * IMC - MC REFL dust shield is ready.
 * MZM - Realigned the 2nd MZI. Realigned and ready to the measurement.
 * RAM - Experimental setup finished. Digital model and screens will be built.
 * HPL - High power laser safety treatment started. Beam dump made of heat sinks were ordered. Also for the coating. Laser power is 1 W, with the PMC locked fine. FSS is being prepared. IMC will be locked after that. Uehara, Akutsu, Kokeyama started preparing the in-vac beam dumps. High power test with IMC will be in Nov.
 * PEM - Two additional microphones were installed in MC REFL (by T Tanaka). Beating sound was found in PSL room. Yokozawa-kun will do some measurement. 1900Hz?
 * IMMT1/IMMT2 - TFs and coil balance are finished. Moved for the IFO alignment.
 * MCO - Coil balance was done again for the ASC control
 * RefCav -

== Plans for the coming 2 weeks ==
 * IMC - Power adjustment system will be installed on the REFL. ASC.
 * RAM - Digital models and screens. RAM optimization by chancing HWP.
 * MZM - Displacement and loop measurement for the 2nd MZI.
 * PEM - PSL sound and IMC sound
 * HPL - Heat sink type baffle installation on PSL. Beam dump for invac dump design. Beam shutter is ready except the solenoid driver (Aritomi-kun in Hongo).
 * Miyoki-san - Water cooling beam dump.

 (ALS installation ongoing)
 * IMC - ASC: MEDM and models were modified for DC centering control. Two ways to control so far we tried; dof1~3 - WFS individual mirror, or dof4 - I&O. Waiting for the PZT mounts for the DC control. PSL PZT position is not good. PZT voltage to change to the mid range of the actuator.
 * MZM - 1st PZT was broken, and new one was installed. Alignement is still bad. Another new bigger PZT for the 1st MZI. 1st MZI, check the
IMC alignment carefully. Control scheme for both MZIs should work well now if we have enough range with the new PZT. Power fluctuation still there, but not seen on the measurement day (klog). Maybe related to the PMC temperature loop??
 * PLS - PMC:temperature loop was added, working well. Thin film polarizer will be installed on next Monday. Power will go up to 5W this week.
 * RAM - no progress
 * HPL - Heat sinks with coating arrived. Some parts were lost when delivery...LightTools are ready.
 * PEM - Fujikawa-ku will hunt the MZM noise.
 * IMMT1/IMMT2 - to measure TFs in vac.
 * MC mirrors will clean with the first contacts before December HP.
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 * GE, guiguo from WIPM
 * Tanioka-kun from 8/22 (IMC ASC)
 * Fujikawa-kun from Niigata (PEM)
 * GE, guiguo from WIPM (Oct 13th)
 * Tanioka-kun will leave (Oct 30th
 * Fujikawa-kun will leave on 12th Oct
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Nakano-kun 19th Fri, 22nd MonKokeyama will work on Detchar in the week of 15th from Mozumi (no mine entrance)
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Oct 15th

Regular Meeting 1002

Participants

Kokeyama, Nakano, Ge, Tanioka, Yamakoh, Fujikawa, Green

Announcement

  • Mine entrance system will change from 6th Oct (see Prof Miyoki's email on KAGRA-all ML, 10/1 17:14)

Schedule for Phase-2

Report from the Last 2 weeks

  • IMC - ASC: MEDM and models were modified for DC centering control. Two ways to control so far we tried; dof1~3 - WFS individual mirror, or dof4 - I&O. Waiting for the PZT mounts for the DC control. PSL PZT position is not good. PZT voltage to change to the mid range of the actuator.

  • MZM - 1st PZT was broken, and new one was installed. Alignement is still bad. Another new bigger PZT for the 1st MZI. 1st MZI, check the

IMC alignment carefully. Control scheme for both MZIs should work well now if we have enough range with the new PZT. Power fluctuation still there, but not seen on the measurement day (klog). Maybe related to the PMC temperature loop??

  • PLS - PMC:temperature loop was added, working well. Thin film polarizer will be installed on next Monday. Power will go up to 5W this week.

  • RAM - no progress
  • HPL - Heat sinks with coating arrived. Some parts were lost when delivery...LightTools are ready.

  • PEM - Fujikawa-ku will hunt the MZM noise.
  • IMMT1/IMMT2 - to measure TFs in vac.
  • MC mirrors will clean with the first contacts before December HP.

Visitors

Absence

Nakano-kun 19th Fri, 22nd MonKokeyama will work on Detchar in the week of 15th from Mozumi (no mine entrance)

Next meeting

Oct 15th

KAGRA/Subgroups/IOO/Meeting/Meeting20181002 (last edited 2018-10-02 10:56:25 by KeikoKokeyama)