= 20180228 =
 * [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=4296]]
 * [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=4311]]
 * [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=4313]]
 * [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=4315]]

== Today's activities ==
Workers: Simon, Akutsu
 * Measured the current distance from the reflector to each photosensor head; X~18mm, Y~16.5mm, Z~17mm.
 * Re-screwed M8 bolts of the heat-link anchor block to the cryo-head with M8 washers and spring washers; tighten.
 * Picked a thermometer with Akutsu's gloved hand to check the difference of heat touching of the thermometer; see [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=4315|here]]
  * When I picked it during it was attached to the WAB suspension's top, the temperature rise was very small.
  * Then I detached the thermometer after waiting for the unpicked temperature got back, and picked it again and find the temperature rising was very drastic ('''''quantitative report should be here''''', again)
  * Then I again attached it carefully, and checked the temperature rising, and this time the rise ratio was actually small ('''''again.....''''')
 * Re-centered the oplev.
 * Miyo-kun started to re-assign the matrix from PS1, PS2, and PS3 to X, Y, and Z.
  * '''''Should be reported later'''''
  * This re-assign will (ex)change the channel names; to call back the past data, you need to know what was the channel name '''at that time...''' In other words, the name change won't change the past ch names!
 * '''[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 PS calibration.
 * Complete the calibration of the oplev; the arm length was reported by Simon, so....
 * Complete the signal matrix.
 * Lower the position of the WAB for cooling down.
 * Make heat connection upper and lower part of the suspension by Cu wires.
 * Make heat anchors for some electric wires in which large current will flow.
 * Optimize the current amount to the coil.
 * 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.