Differences between revisions 25 and 33 (spanning 8 versions)

Mode Cleaner

The Input Mode Cleaner is a suspended triangular cavity. Each mirror of the triangle is 0.25 kg, 3" in diameter and 1" thick. The input mode cleaner length is ~13.5 m (27 m round trip), the Finesse is ~1460. Cavity pole is 3.79kHz.

Beam centering

http://nodus.ligo.caltech.edu:8080/40m/2863
http://nodus.ligo.caltech.edu:8080/40m/2864
http://nodus.ligo.caltech.edu:8080/40m/2867
http://nodus.ligo.caltech.edu:8080/40m/2870

Alignment Sensing and Control

MC Wave Front Sensors

Analog circuits

common mode servo circuit board

Documents and Links

LIGO-T020145-00-R, "Characterization and commissioning of digital suspensions for the 40m Mode Cleaner"
LIGO-T020147-00-R, "Characterizing the length sensing and control system of the mode cleaner in the LIGO 40m lab"
RF_ASC, "Interferometer Wave Front Sensing"

-  ⇤ ← Revision 25 as of 2010-07-13 00:36:37 → 
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+   ← Revision 33 as of 2012-01-03 23:02:43 → ⇥
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- . The Input Mode Cleaner is a suspended triangular cavity. Each mirror of the triangle is 0.25 kg, 3" in diameter and 1" thick.
+ . The Input Mode Cleaner is a suspended triangular cavity. Each mirror of the triangle is 0.25 kg, 3" in diameter and 1" thick. The input mode cleaner length is ~13.5 m (27 m round trip), the Finesse is ~1460.  Cavity pole is 3.79kHz.
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-The input mode cleaner length is ~13.5 m (27 m round trip), the Finesse is ~1460.  Cavity pole is 3.79kHz.
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-[[Installing the Input Mode Cleaner board]]
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-attachment:MC-Schematic.pdf
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-== Beam centering ==
+= Beam centering =
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-== WFS ==
 . [[MC WFS]]
+= Alignment Sensing and Control =
 . [[MC_WFS| MC Wave Front Sensors ]]
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-= Documents =
 * [http://www.ligo.caltech.edu/docs/T/T020145-00.pdf LIGO-T020145-00-R], "Characterization and commissioning of digital suspensions for the 40m Mode Cleaner"
 * [http://www.ligo.caltech.edu/docs/T/T020147-00.pdf LIGO-T020147-00-R], "Characterizing the length sensing and control system of the mode cleaner in the LIGO 40m lab"
+= Analog circuits =

 . [[attachment:MC-Schematic.pdf|common mode servo circuit board]] 

= Documents and Links =
 * [[http://www.ligo.caltech.edu/docs/T/T020145-00.pdf|LIGO-T020145-00-R]], "Characterization and commissioning of digital suspensions for the 40m Mode Cleaner"
 * [[http://www.ligo.caltech.edu/docs/T/T020147-00.pdf|LIGO-T020147-00-R]], "Characterizing the length sensing and control system of the mode cleaner in the LIGO 40m lab"
 * [[RF_ASC]], "Interferometer Wave Front Sensing"