= PR3 Meeting on 2016/1/26 =
2015/1/26 13:30 -

Kamioka TV conference room + !SeeVogh

Participants:Takahashi, Tatsumi, Okutomi, Joris, Aso, Fabian, Raffaele, Ishizaki, Mark, Fujii, Shoda, Akutsu, Shoda

== Minutes ==
 * What happened (Shoda)
  * An OSEM flag on the mirror detached (right-bottom one seen from the AR side)
   * It was touching the OSEM when RM was slid in.
  * One of the 2nd wire breakers detached
  * Found a crack in one of the 1st wire breakers
   * The crack is in the middle of the prism. Not in the V-grooves.
   * Checked the spare mirror used for the test hanging: found a crack too (in the middle)
 * What to do with the sapphire prism
  * Replace or keep using them ?
  * Keep using them has a risk of further crack development
  * Replacing will take at least a few weeks: a large impact on the schedule
  * Will ask SEO (or EO) for executive judgement
 * What to do with the flag base and 2nd wire breaker
  * Do we need to remove the residual glue on the mirror ?-> Yes
  * Where to do the gluing work ?
   * We need to use acetone for the removal of the residual glue
   * We will perform the work in an ATC clean room. Will use only a small amount of acetone following the ATC rule.
   * Tatsumi-san is available to do the above task in Mitaka
  * Mirror transportation
   * Ishizaki-san will transport the mirror
   * Ideally, using the official vhiecle of the NAOJ is better but the vhiecle is already booked this time.