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Size: 1994
Comment:
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Size: 1456
Comment:
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| Deletions are marked like this. | Additions are marked like this. |
| Line 22: | Line 22: |
| * Align Y arm PLUS PR2/3: * put alignment targets on ITMY/ETMY cages * use alignment ruler for PR2/3 * using PZT1/2, iteratively: * center beam on ITMY * center beam on ETMY * center beam on PR2/3 * use PR2/3 hysteresis to adjust pitch of PR2/3 * flashes in Y trans |
* Adjust ITMY biases to center ITMY retro-reflection on BS. |
| Line 32: | Line 24: |
| * Center beam on PRM: * height should be constrained at this point based on PR2/3 centering and Y arm alignment * move PRM cage if misaligned in yaw * PRM retro-reflection should come out REFL cleanly |
* Put apertures on ITMX and ETMX cages. |
| Line 37: | Line 26: |
| * Center beam on BS (should not need adjusting): * put alignment target on BS |
* Using BS, center beam on ITMX/ETMX. NOTE: SHOULD NOT BE TOUCHING INPUT POINTING/PZTs. |
| Line 40: | Line 28: |
| * Align X arm: * put alignment targets on ITMX/ETMX cages * use BS to center beam on ETMX * ITMX height should be constrained by BS/ETMX * adjust ITMX cage if misaligned in YAW * flashes in X trans |
* Adjust ITMX biases to center ITMX retro-relfection on BS. |
| Line 47: | Line 30: |
| * Align SRC * check beam centering on SR3/2/M * adjust SRM retro-reflection for centered return beam 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. |
Vent checklists
- Turn OFF PZT high voltage
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
- 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