Differences between revisions 10 and 15 (spanning 5 versions)
Revision 10 as of 2012-12-11 00:14:03
Size: 1568
Comment:
Revision 15 as of 2012-12-18 03:53:41
Size: 1834
Comment:
Deletions are marked like this. Additions are marked like this.
Line 1: Line 1:
= Vent checklists = = Pre-vent checklists =
Line 6: Line 6:
 * Reduce input power by placing wave plate setup '''BEFORE THE PMC'''.
Line 42: Line 42:
 * '''GET CAMERA IMAGES OF EVERYTHING'''
   * We must get images right before closing, right after closing, etc.
Line 54: Line 57:

 * Close PSL shutter & green shutters at the ends

 * Check jam nuts

Pre-vent checklists

  • Turn OFF PZT high voltage
  • Close shutter of PSL-IR and green shutters at the ends
  • Make shure the jam nuts are protechting bellows
  • Reduce input power by placing wave plate setup BEFORE THE PMC.

Alignment precedure

  • Put input PZTs in center of range.
  • Place cage-mount aperture targets on BS and PRM cages
  • Using PZT mirrors ONLY, center beam in PRM aperture, and on PR2 folding mirror, and center PRM retro-reflection in YAW at PZT1/Faraday.
  • Adjust PRM pitch biases to center retro-reflection in pitch.
  • Add brass-mount apertures to ITMY and ETMY.
  • Unclamping and adjusting in yaw, adjust PR2 and PR3 folding mirrors such that beam is through BS, ITMY, and ETMY apertures.
  • Using PR2/3 pitch hysteresis, adjust pitch to center beam through BS/ITMY/ETMY apertures.
  • Adjust ITMY biases to center ITMY retro-reflection on BS.
  • Put apertures on ITMX and ETMX cages.
  • Using BS, center beam on ITMX/ETMX. NOTE: SHOULD NOT BE TOUCHING INPUT POINTING/PZTs.
  • Adjust ITMX biases to center ITMX retro-relfection on BS.
  • Should be able to see AS MICH flashes.
  • Adjust SR2, SR3 to center beams on SR3, SRM.
  • Adjust SRM for retro-reflection of AS beam at BS.

Closeup checklist

  • Center beam on all AS optics
  • GET CAMERA IMAGES OF EVERYTHING

    • We must get images right before closing, right after closing, etc.
  • Make sure REFL is clear
    • dither PRM, see motion on AP tables
  • Make sure AS is clear
    • dither BS/ITM, see motion on AP tables
  • Using IPANG/POS pick-off mirrors, center beams on:
    • IPPOS
    • IPANG
  • Check all OpLevs centered, in and out of vacuum

  • Turn PZT high voltage OFF
  • Close PSL shutter & green shutters at the ends

  • Check jam nuts

vent/checklist (last edited 2018-11-20 06:17:08 by GautamvenugopalanATligoDOTorg)