= iKAGRA PR2 alignment & Beam Profile Measurements =
Date: 2016/3/3

Workers: Aso, Michimura, Ushiba, Kuwahara, Okutomi, Furuhata

=== Objectives ===
 * Center the beams on PR2 and PR3 mirrors
 * Measure the beam profile in front of PR2 and PR3

=== Procedure ===
 * Enter the tunnel, check necessary tools
 * Setup KOACH filters near the PR3 chamber
 * Setup KOACH filters near the PR2 chamber
 * Open the flange of PR3 (on the +X side)
 * Open the flange of PR2 (both -X and +X sides)
 * Lock the MC and send the beam from IMMT2 to PR2 with low power (<2mW)
 * Center the beam on PR2 using IMMT2 picomotors
 * Center the beam on PR3 using PR3 picomotors
 * If the beam on PR3 is too dim and difficult to align
  * Declare the laser hazard area. Distribute laser goggles to people in the center area
  * Increase the power from MC (to 25mW or so)
 * Measure the beam profile in front of PR2 using the middle size beam profiler
 * Measure the beam profile in front of PR3 using the large beam profiler
 * Stop the beam from MC
 * Declare the finish of the laser hazard
 * Close the flanges
 * Cleaning around the chambers
 * Stop KOACH filters

=== Necessary items, tools ===
 * Middle size beam profiler (Found one near the MCF clean booth. Check with Doi-san)
  * A stand to hold it at the right height
 * Large size beam profiler (Doi-san's room)
  * A height adjustable table (Found two of them near the PR3 on +Y side)
 * Two PHS phones for communication between PR and BS area clean booths (or transceivers)
 * Two sets of floor KOACH
 * Clean suits and inner ware
  * Chamber compatible type
  * Found many L and M in the laser room. For other size, we need to bring them from the data analysis building.
 * A wrench to turn the bolts for the flanges (in the red tool cabinet near PR2 clean booth)
 * A PC (or two) for controlling the picomotor (will use one of the DGS mac books)
  * Prepare a joypad as a backup (Found one in the PR2 clean booth)
 * A lot of laser goggles (In a cardboard box near the entrance to PR3 clean booth)
 * Sensor cards (check with IOO people)
 * IR viewer (Found two near the MCF chamber. Check with IOO people)

=== Items to be brought into the tunnel ===
 * Large beam profiler
 * Clean suits (except for L and LL)
 * PHS (2)

=== Notes ===
 * Divide the team of 5 into 2-2-1 (PR area - BS area - outside the clean booths)
 * Who will operate the MC: Enomoto-kun will be in Kamioka this week.