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  * With different current sources to the LEDs; OSEM satellite box and Agilent F3630A; the calibration factor seemed changed according to the supplied current; see [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=4246|here]]   * With different current sources to the LEDs; OSEM satellite box and Agilent F3630A; the calibration factors seemed to change just according to the supplied current; see [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=4246|here]]
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   * Why...???

20180221

Today's activities

Workers: Simon, Miyo, Akutsu

  • Continued to calibrate the photosensors.
    • With different current sources to the LEDs; OSEM satellite box and Agilent F3630A; the calibration factors seemed to change just according to the supplied current; see here

    • About the issue yesterday, we found the difference of the calibration factor shapes were not due to the difference of the reflectors surface; see here

      • Why...???
  • [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.

LCGT/subgroup/AOS/WideAngleBuffle/2018-02-21 (last edited 2018-02-22 23:08:21 by TomotadaAkutsu)