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| Deletions are marked like this. | Additions are marked like this. |
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| (1) Dichroic mirror for recycling cavities (Kiwamu) * Figure out required spec * [[https://dcc.ligo.org/cgi-bin/private/DocDB/ShowDocument?docid=87589|spec in DCC]] * wedge angle = 2 deg * dichroic mirror quotes: [[https://wiki-40m.ligo.caltech.edu/vent?action=AttachFile&do=get&target=ATF.pdf|ATF]] [[https://wiki-40m.ligo.caltech.edu/vent?action=AttachFile&do=get&target=Laseroptik.pdf|Laseroptik (no wedge)]], [[https://wiki-40m.ligo.caltech.edu/vent?action=AttachFile&do=get&target=Laseroptik2dw.pdf|Laseroptik (new w/ 2 deg wedge)]] |
(1) Dichroic mirror for recycling cavities (Jamie) * [[https://dcc.ligo.org/cgi-bin/private/DocDB/ShowDocument?docid=87589|spec in DCC]] * quotes: * --([[https://wiki-40m.ligo.caltech.edu/vent?action=AttachFile&do=get&target=ATF.pdf|ATF]])-- * '''''[[https://wiki-40m.ligo.caltech.edu/vent?action=AttachFile&do=get&target=Laseroptik.pdf|Laseroptik (final)]]''''' |
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| * [[Optical_Layout#PR3SR3|Optical table layout needs to be modified]] * '''''We have mirrors in hand!''''' * Phase map of mirror, in and out of tip-tilt mounts |
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| * [[Optical_Layout#PR3SR3|Optical table layout needs to be modified]] * Get a quote from ATF. * Qty = 3 (2 + 1 spare ) * Start ordering (in a week) (2) Black glass beam dumps (Koji) |
(2) Black glass beam dumps |
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| * '''''being baked...''''' | |
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| (3) OSEM mount screws (Steve) | (3) OSEM mount screws |
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| * http://131.215.115.52:8080/40m/6232 | * '''''[[http://nodus.ligo.caltech.edu:8080/40m/6472|final design]]''''' * '''''manufactured and being baked...''''' |
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| * Electronics * Cables including vacuum-compatible ones and the non-vacuum ones * Prepare mirrors * Assembly and baking |
* --('''''Suresh is going to LHO April 15-25 for assembly/shipping of tip-tilts...''''')-- * '''''We have tip-tilts from LHO''''' * --(baked)-- * assembled * Needed electronics: * DAC? * anti-image filters? * dewhite filters? * coil drivers? * eurocrate? * __'''''Need in vacuum-compatible ones and the non-vacuum ones'''''__ * Full assembly with mirrors |
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| (5) OMC activation (Jenne) * Calculate the mode matching solutions and prepare appropriate telescopes * Draw optical layout * Digital controls |
(5) Mode-matching telescope adjustments (Jenne/Suresh) * Need to determine what exactly the problem is. * What needs to be moved? |
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| (6) OSEM upgrade (somebody) * Need a discussion |
(6) Cavity scattering measurements? (Jan) (7) Review IP{ANG,POS} alignment/closeup proceedure |
Vent plans
Prep for next vent
(1) Dichroic mirror for recycling cavities (Jamie)
- quotes:
note: 2 deg wedge quote has Fused Silica grade F = 5 ppm homogeneity & micro roughness 0.3 nm RMS, Rana OKed both, 3 wks delivery, Jamie takes care of ordering
We have mirrors in hand!
- Phase map of mirror, in and out of tip-tilt mounts
(2) Black glass beam dumps
- Large baffle style covers for the suspensions
- Small V-shape pieces for generic purpose
being baked...
(3) OSEM mount screws
- Hex-top, longer, sliver-plated
- Qty = 100
- No-plastic
manufactured and being baked...
(4) Active tip-tilts (Suresh/Jamie)
Suresh is going to LHO April 15-25 for assembly/shipping of tip-tilts...
We have tip-tilts from LHO
baked
- assembled
- Needed electronics:
- DAC?
- anti-image filters?
- dewhite filters?
- coil drivers?
- eurocrate?
Need in vacuum-compatible ones and the non-vacuum ones
- Full assembly with mirrors
- Prepare feedthrough connectors
- Digital controls
(5) Mode-matching telescope adjustments (Jenne/Suresh)
- Need to determine what exactly the problem is.
- What needs to be moved?
(6) Cavity scattering measurements? (Jan)
(7) Review IP{ANG,POS} alignment/closeup proceedure