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[http://www.ligo.caltech.edu/~cit40m/Docs/DCdetect/40mDCdetect.pdf Proposal for a Homodyne (DC) Detection Experiment at the LIGO Caltech 40-Meter Laboratory, LIGO-T050086-00-R 6/20/2005]
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[http://www.ligo.caltech.edu/~cit40m/Docs/DCdetect/DCreadout_InVacLayout.jpg "In-vacuum layout drawing"] <<ImageLink(http://www.ligo.caltech.edu/~cit40m/Docs/DCdetect/DCreadout_InVacLayout.jpg,width=500)>>
[http://www.ligo.caltech.edu/~cit40m/Docs/DCdetect/DCreadout_InVacLayout.jpg In-vacuum layout drawing]
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[http://www.ligo.caltech.edu/~cit40m/Docs/DCdetect/DC_Detect_wiring.pdf "DC Detection Wiring diagram 8/31/06"] [http://www.ligo.caltech.edu/~cit40m/Docs/DCdetect/DC_Detect_wiring.pdf DC Detection Wiring diagram 8/31/06]
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= Next Generation DC Readout Notes =
 * Put the resistors on the PD block, not the nipple.
 * Wider separation for the PDs so the ghost beam can get wedged out.
 * Black glass ring around the PD cans to catch the 1st ghost beam.
 * Black glass dumps all over the place for the leak throughs. Optic mounts should have their own dumps.
 * Don't use any of the Piezo-Jena crap.
 * Don't use copper for the OMC body. All fused-silica, all the time.
 * Don't use a teensy mirror in the OMC. Calculate the needed resonant frequency.
 * Make both curved mirrors on a OMMT movable? And Bigger?
 * always draw ALL the dogs for EVERYTHING
 * CVI mirrors coated for 45P don't get better than ~98% reflectivity
 * Is it OK to change to use a fused silica baseplate with optically contacted mirrors?

Version 0.1 DC Readout / OMC System

[http://www.ligo.caltech.edu/~cit40m/Docs/DCdetect/40mDCdetect.pdf Proposal for a Homodyne (DC) Detection Experiment at the LIGO Caltech 40-Meter Laboratory, LIGO-T050086-00-R 6/20/2005]

http://www.ligo.caltech.edu/~cit40m/Docs/DCdetect/DCreadout_InVacLayout.jpg [http://www.ligo.caltech.edu/~cit40m/Docs/DCdetect/DCreadout_InVacLayout.jpg In-vacuum layout drawing]

[http://www.ligo.caltech.edu/~cit40m/Docs/DCdetect/DC_Detect_wiring.pdf DC Detection Wiring diagram 8/31/06]

Older versions and block diagrams:

See [http://www.ligo.caltech.edu/~rward/dcreadout/ Rob Ward's DC Readout page].

OutputModeCleaner

Stuff We Need to Get

Vacuum opening Plan of Action

Lessons learned in prep for next generation Lessons Learned

DC_Readout (last edited 2012-01-03 23:02:39 by localhost)