KAGRA/Subgroups/DET/Meeting/230125

Summary
- No special difference from last week
- PRFPMI trial is ongoing
  - Today, we will install the GR PNC system, it became stronger for large micro-seismic motion
- Heavy snow...
Site work
- 1/30 - 2/3 Repair the leak at OMC area
- PLL with new laser
FPMI lock
- Lock enable
- Silent run sometimes performed
  - 2022/12/28 evening - 2023/01/14 morning klog23463
  - Overnight
- FPMI with DC readout and ISS locked
  - 2023/01/15 6:10:00 - 8:10:00(JST) klog23575
PRFPMI lock trial
- PRMI lock stable
- Establish the initial alignment
- Bottle neck is the noise level of ALS
  - It made difficult to hand over from GR to IR
    - How to brand for hand over
  - Implementation of the PNC(Phase Noise Cancellation) to reduce the 0.4Hz resonant peak
    - In vac optical table and put the steering mirror on it
  - Reducing the air disturbance
ASC implementation
- Evaluate offset map
- Trial of the implementation of the ASC loop

KAGRA/Subgroups/DET/Meeting/230125 (last edited 2023-01-25 09:43:19 by TakaakiYokozawa)