20180220
Today's activities
Workers: Simon, Miyo, Akutsu
Continued to calibrate the photosensors; see here.
Potential issue: About PS-2 in the above link, PDs were got unexpected voltage and currents (1.5V, 60mA according to Miyo-kun; meaing 30mA tp each PD). Not sure this could be related to the different shape of the calibration factor measurement. No idea.
[Ongoing] Need cares of water springs from anchor bolts for oplev pylons.
[Ongoing] Need to confirm what are the scratch lines made by the measurement by the KEK team last week.
Next plan
- Calibrate the PS.
- Connect heat links and the heat link anchor block.
- Complete the calibration of the oplev; the arm length was reported by Simon, so....
- Check the balance of the suspended WAB with some wires and sensors are attached.
- Check how the damping would be now after the replacement of the damping magnets.
- Check the reproducibility of the alignment of the suspension among several modes.
- Check heights of several points.
- Take care of water spring??
Wanted!
- Two burndy connectors, vacuum compatible.
Stages outside the chamber to ease wiping our legs.
Good rail(?) to move the WAB suspension in the cryostat in the main beam direction.
Chain block? to support the load in the chamber.
- A clock to know the time easily.
- M6 screw set.