Reports until 10:14, Monday 27 October 2014
H1 SYS
daniel.sigg@LIGO.ORG - posted 10:14, Monday 27 October 2014 (14636)
Commissioning calendar for next 2 weeks

Good progress was made in making the DRMI lock more frequenct, more robust and more stable. The AS36 wavefront sensors were commissioned to aligned the SRC and BS. Improvements were made in loop shape, triggering, optical levers, drive diagonalization, and clipping. All together, this reduced the mode hopping problem in the SRC greatly.

Here is the list of commissioning task for the next 7-14 days:

Locking team:

  1. Carrier sweeps with DRM locked.
  2. Common hand-off to transmitted power.
  3. Lock interferometer.
  4. Resolve down stream clipping issues in the SRC.
    Recycling gain is still low.
Alignment team:
  1. OL team: sort out whitening.
  2. Revisit EY green WFS beam path and look for ghost beams.
  3. Make EY green WFS work again.
  4. Install EX green WFS auto-centering hardware.
  5. Commission an arm alignment controls topology which can be used for initial alignment.
  6. Integrate green WFS into initial alignment.

SEI/SUS team:
  1. Install new models for violin mode damping.
  2. Commission violin mode damping.
  3. Install new ESD linearization code.
  4. Commission ESD linearization.

RF:
  1. Make an assessment of RF cross talk into the IMC AOM.
  2. Investigate EMI radiation by the VCOs and the fixed frequency OCXO.

TCS:
  1. Finish commissioning  ring heaters and CO2 lasers.
  2. Optimize mode matching and Michelson contrast defect.