Differences between revisions 32 and 38 (spanning 6 versions)
⇤ ← Revision 32 as of 2011-12-19 22:05:10 →
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Editor: KiwamuIzumi
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← Revision 38 as of 2022-08-16 23:41:42 → ⇥
Size: 1329
Editor: AnchalguptaATligoDOTorg
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= Locking =
Lock Settings for IMC.
Note C1:IOO-MC_FASTSW = 1 (Enable) and C1:IOO-MC_POL = 1 (Minus) is required state for autolocker to catch lock.
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{{attachment:IMC_Lock_Settings.png|IMC Lock settings}}
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= Mode Cleaner Model =
  . [[MC_model| MC model ]]
 
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 . [[MC_WFS|MC Wave Front Sensors]]  . [[MC_WFS| MC Wave Front Sensors ]]
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 . [attachment:MC-Schematic.pdf common mode servo circuit board]  . [[attachment:MC-Schematic.pdf|common mode servo circuit board]]
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 * [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"		  * [[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"

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.

Locking

Lock Settings for IMC. Note C1:IOO-MC_FASTSW = 1 (Enable) and C1:IOO-MC_POL = 1 (Minus) is required state for autolocker to catch lock.

IMC Lock settings

Mode Cleaner Model

Beam centering

Alignment Sensing and Control

Analog circuits

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"

Mode_Cleaner (last edited 2022-08-16 23:41:42 by AnchalguptaATligoDOTorg)