= 20180214 =
 * [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=4181]]

== Today's activities ==
Workers: Akutsu, Miyo
 * Did electric crafting for assembling photosensors.
  * The actual kapton-coated wires from the PDs and the LEDs were about 40-50 mm long.
  * The PDs were parallelly connected, which meant two wires were swage at a single burndy female pin; note that this swage should be done after the PDs are located to their positions, '''''otherwise the retainer cannot come through the swaged pin!!!''''' (Consider by your brain; it is easily understood.)
 * Connected an assembled photosensor head to the burndy connector P23 in the chamber with 3-m long patch cables.
  * Before connecting the LED, the voltage between the anode and the cathode was measured, and was about 13.8V.
  * Before connecting the LED, another LED (for contingency) was connected, and with it we illuminated the PDs and got responses.
  * Connected the actual LED, and found the photosensor worked in principle; detailed measurements will be done tomorrow.
 * Assembled an aluminum adapter block for heat links.
 * '''''Issue''''': how should we connect the coil pins and the electric wires...? 
 * '''[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 ==
 * Complete the assembly of the PS heads with clean parts (or wash them after assembled)
 * Calibrate the PS.
 * 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.  
 * Prepare calibration of photosensors.
 * 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.