Differences between revisions 1 and 23 (spanning 22 versions)
⇤ ← Revision 1 as of 2006-09-10 05:07:45 →
Size: 1544
Editor: RobertWard
Comment:
← Revision 23 as of 2006-09-19 06:49:11 → ⇥
Size: 4322
Editor: RobertWard
Comment:
Deletions are marked like this. Additions are marked like this.
Line 1: Line 1:
Detailed Vent Plan: Detailed Vent Plan:

-1) Preparations for vent:

 * Steve will prepare baseline readings for IOOPOS, IOOANG, IPPOS and IPANG QPDs,
  . all the oplev QPDs, and any/all other QPDs that are useful.
 * We might want to lock the arms, and take baseline trends
  . of the DC power on all the photodiodes that can be trended.
 * Shall we keep the MC2 QPD on the transmitted beam,
  . or move it back to the oplev beam?
 * Osamu will prepare a detailed plan for the OSEM work.
 * Rana will lock the arms and measure the angle-to-length couplings
  . of the ITMs. If the beam is not centered horizontally on ITMX, we can think about moving it during the vent.

-0.5) Establish SRM + OO table alignment, as referenced to AP table

 * Install fixed mount fiber launch at AP. This will be like a long, IR oplev.
 * Verify that this fiber beam is co-linear with current darkport beam.
Line 14: Line 31:
2) Fix OSEMS on MC1, MC2, MC3, BS, PRM, SRM 2) Fix OSEMS on MC2, BS, PRM

Maybe wait on SRM till the end, since it is our reference for aligning the back-propagating beam from the DC PD, retroreflecting off of the SRM back to the DCPD.
Line 20: Line 39:
3) *Install fixed mount fiber launch at AP? 3) Install DC readout optics
Line 22: Line 41:
 * Verify that this fiber beam is co-linear with current darkport beam.  * position electronics, wiring, and other necessary equipment near the OOC for biasing the TT PZTs,
  . locking the OMC, and alignment.
  1. Necessary equipment includes, but is not limited to:
  1. PZT driver (OMC L)
  1. Lock-in Amp (SR830)
  1. Cabling (many BNCs), cross-connects for Vacuum flange
  1. SR560
  1. fibercoupled laser
  1. High-Voltage power supply (for TTPZT), with cabling and cross connects to power mirrors in TWO chambers.
  1. Power supply for DC PD
  1. Four channel color scope
Line 24: Line 53:
4) *Move OMMT assembly to OO chamber, place according to drawing.
  * Measure levelness of OO table with bubble
 * Measure levelness of BSC table with bubble
 * Measure levelness of ITMX table with bubble
 * place iris on OO table, using CrystaLaser beam as reference.
 * plase iris(es?) on BSC table, using CrystaLaser beam as reference.
 * Move OMMT assembly to OO chamber, place according to drawing.
Line 29: Line 62:
 * Remove DCPD, install second fiber launch in its place.
 * Attach cable for OMC length, wire up a solution to drive it.
 * Install RF pickoff mirror. Use reflected beam to lock OMC		  * secure OMC breadboard and OMMT to table.
 * run wiring, establish signals from DC PDs.
 * Install TTPZT1 on BSC table and TTPZT2 on OOC table
 * Run wiring from BSC to ITMX. Disconnect ITMX flag picomotor wiring. and replace with TTPZT1 wiring.
 * Check that both TT PZTs can be powered and biased. Simultaneously!
 * Attach cable for OMC length PZT, wire up a solution to drive it. Test that it works properly.
 * Remove DCPD, install second fiber launch in its place. Lock the OMC backwards.
 * Install RF pickoff mirror and next steering mirror.
Line 34: Line 72:
 * Relevel the table, using the bubble.
 * Verify alignment of fiber beam 2 through OMC, OMMT, RF pickoff mirror, to PZT2.
Line 35: Line 75:
 * Align PZT2 to hit the PZT1
 * Drape cable from ITMX to BSC		  * Align PZT2 to hit the AP steering mirror1, f-beam 2 to hit SRM and retroreflect to the OMC
 * Remove AP steering mirror 1, replace with TTPZT1.
Line 38: Line 78:
 * Align PZT1 so beam hits center of ITM?  * Align PZT1 so beam hits center of SRM, and then through to centers of ITMX and ITMY.
Line 41: Line 81:
  . with that from the first fiber, by moving a steering mirror on the   . with that from the first fiber, by moving a steering mirror on the
  . AP table.
 * Place OMCT mirror.
 * Now the f-beam 1, coming from the original AP table and retroreflecting from the SRM, should be
  . visible near the input to the OMC.
 * Verify that OMCR and OMCT beams exit chamber.
 * remove Thorlabs diode used for locking OMC backwards.
 * Test that the OMMT and squeezer mirror picomotors can be controlled from the outside.
 * Comission the squeezer optics.
 * Relevel table again if movement occurs;
  . if so, double check alignment of fiber beam to SRM and back, and that APRF, OMCR, OMCT beams exit the chamber.
Line 43: Line 93:
  . AP table.
 * Relevel the table, using the bubble and also the beam from the first fiber?
 * Comission the squeezer optics. Relevel table again if movement occurs.		 4) Fix OSEMS on SRM

Detailed Vent Plan:

-1) Preparations for vent:

  • Steve will prepare baseline readings for IOOPOS, IOOANG, IPPOS and IPANG QPDs,
    • all the oplev QPDs, and any/all other QPDs that are useful.
  • We might want to lock the arms, and take baseline trends
    • of the DC power on all the photodiodes that can be trended.
  • Shall we keep the MC2 QPD on the transmitted beam,
    • or move it back to the oplev beam?
  • Osamu will prepare a detailed plan for the OSEM work.
  • Rana will lock the arms and measure the angle-to-length couplings
    • of the ITMs. If the beam is not centered horizontally on ITMX, we can think about moving it during the vent.

-0.5) Establish SRM + OO table alignment, as referenced to AP table

  • Install fixed mount fiber launch at AP. This will be like a long, IR oplev.
  • Verify that this fiber beam is co-linear with current darkport beam.

0) Fill Vacuum with Air

1) Remove Doors and Access Connectors:

  • OO: ND and AC
  • IO: AC
  • BSC: ND and ITMY AC
  • ITMY: AC
  • ITMX: ND
  • MC2: ?

2) Fix OSEMS on MC2, BS, PRM

Maybe wait on SRM till the end, since it is our reference for aligning the back-propagating beam from the DC PD, retroreflecting off of the SRM back to the DCPD.

Mis-align MC2 to prevent flashes?

2.5) Install half-wave plate to rotate polarization into the MC.

3) Install DC readout optics

  • position electronics, wiring, and other necessary equipment near the OOC for biasing the TT PZTs,
    • locking the OMC, and alignment.
    • Necessary equipment includes, but is not limited to:
    • PZT driver (OMC L)
    • Lock-in Amp (SR830)
    • Cabling (many BNCs), cross-connects for Vacuum flange
    • SR560
    • fibercoupled laser
    • High-Voltage power supply (for TTPZT), with cabling and cross connects to power mirrors in TWO chambers.
    • Power supply for DC PD
    • Four channel color scope
  • Measure levelness of OO table with bubble
  • Measure levelness of BSC table with bubble
  • Measure levelness of ITMX table with bubble

  • place iris on OO table, using CrystaLaser beam as reference.

  • plase iris(es?) on BSC table, using CrystaLaser beam as reference.

  • Move OMMT assembly to OO chamber, place according to drawing.
  • Place 4 spherical washers to support OMC breadboard.
  • Move, and place OMC breadboard.
  • Remove handle from OMC breadboard.
  • secure OMC breadboard and OMMT to table.
  • run wiring, establish signals from DC PDs.
  • Install TTPZT1 on BSC table and TTPZT2 on OOC table
  • Run wiring from BSC to ITMX. Disconnect ITMX flag picomotor wiring. and replace with TTPZT1 wiring.
  • Check that both TT PZTs can be powered and biased. Simultaneously!
  • Attach cable for OMC length PZT, wire up a solution to drive it. Test that it works properly.
  • Remove DCPD, install second fiber launch in its place. Lock the OMC backwards.
  • Install RF pickoff mirror and next steering mirror.
  • Place remaining optics rougly on table, including squeezer optics.
  • Measure levelness of OO optic table.
  • Relevel the table, using the bubble.
  • Verify alignment of fiber beam 2 through OMC, OMMT, RF pickoff mirror, to PZT2.
  • Bias tip-tilt PZT2 to the middle of its range.
  • Align PZT2 to hit the AP steering mirror1, f-beam 2 to hit SRM and retroreflect to the OMC
  • Remove AP steering mirror 1, replace with TTPZT1.
  • Bias PZT1 to middle of its range.
  • Align PZT1 so beam hits center of SRM, and then through to centers of ITMX and ITMY.
  • Align RF pickoff mirror so back-reflection from SRM
    • can exit chamber. This beam can then be made co-linear
    • with that from the first fiber, by moving a steering mirror on the
    • AP table.
  • Place OMCT mirror.
  • Now the f-beam 1, coming from the original AP table and retroreflecting from the SRM, should be
    • visible near the input to the OMC.
  • Verify that OMCR and OMCT beams exit chamber.
  • remove Thorlabs diode used for locking OMC backwards.
  • Test that the OMMT and squeezer mirror picomotors can be controlled from the outside.
  • Comission the squeezer optics.
  • Relevel table again if movement occurs;
    • if so, double check alignment of fiber beam to SRM and back, and that APRF, OMCR, OMCT beams exit the chamber.

4) Fix OSEMS on SRM

5) Pack up and get out.

Detailed_Vent_Plan (last edited 2012-01-03 23:02:43 by localhost)