Differences between revisions 1 and 18 (spanning 17 versions)

Optical Lever (Room Temperature)

Related subgroups: VIS, IOO, MIF, VAC, CRY...

Contents

Optical Lever (Room Temperature)

Scope

Sensing local motions including longitudinal dof and all alignment dofs (pitch, yaw and roll) of any mirrors supported by vibration isolation system.

Note on the operating temperature: here the system is assumed to be utilized at room temperature, not in cryogenic temperature.

Applicable Documents

TBD; just see the links below.

General Description

Receiver and Transmitter

Naming Conventions

TBD

Locations

BS chamber
ITM chambers (X,Y)
ETM chambers (X,Y)
PRC chambers (PRC, PR2, PR3)
SRC chambers (SRC, SR2, SR3)
MC chambers (MC1, MC2...)

Requirements

Sensor noise should be less than xxx.
Sensor's dynamic range should be greater than xxx.
At least horizontal degrees of freedom (X,Y)
Preferably a vertical sensor (Z) and side
The sensors have to be rigidly mounted on the ground so that these are useful for remembering the position of the mirror and recording the drifts.

Characteristics

TBD

Inspection plans

TBD

Procurement process and plans

TBD

Links

Some of the LIGO documents listed below are NOT public; to access them, you may need your own LSC account.

-  ⇤ ← Revision 1 as of 2011-07-03 04:29:15 → 
  Size: 613
  Editor: TomotadaAkutsu
  Comment:
+   ← Revision 18 as of 2011-10-07 17:48:05 → ⇥
  Size: 2471
  Editor: TomotadaAkutsu
  Comment:
-Deletions are marked like this.
+Additions are marked like this.
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-= Optical Lever =
+= Optical Lever (Room Temperature) =
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+'''[[../|..Up]]'''
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-Optical lever for LCGT-SAS system
+Sensing local motions including --(longitudinal dof and)--
all alignment dofs (pitch, yaw and roll) of any mirrors supported by vibration isolation system.

<!> Note on the operating temperature: here the system is assumed to be utilized at room temperature, not in cryogenic temperature.
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+Line 15:
- * Spec. for vacuum chambers
 * Any...
+TBD; just see the links below.
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+Line 18:
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+Line 28:
- *
+ * ITM chambers (X,Y)
 * ETM chambers (X,Y)
 * PRC chambers (PRC, PR2, PR3)
 * SRC chambers (SRC, SR2, SR3)
 * MC chambers (MC1, MC2...)
-Line 26:
+Line 35:
-TBD
+ * Sensor noise should be less than xxx.
 * Sensor's dynamic range should be greater than xxx.
 * At least horizontal degrees of freedom (X,Y) 
 * Preferably a vertical sensor (Z) and side 
 * The sensors have to be rigidly mounted on the ground so that these are useful for remembering the position of the mirror and recording the drifts.
-Line 35:
+Line 48:
+== Procurement process and plans ==
TBD


<<Anchor(Links)>>
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+Line 54:
- * [[https://dcc.ligo.org/cgi-bin/DocDB/ShowDocument?docid=29666&version=1|LIGO-T1000746-v1, Viewports Subsystem Final Design Document]]
+<!> Some of the LIGO documents listed below are '''NOT''' public; to access them, you may need your own LSC account.
 * [[https://dcc.ligo.org/cgi-bin/private/DocDB/ShowDocument?docid=22686|LIGO-M1000343, Advanced LIGO Review Committee Report: Test Mass Optical Lever FDR]]
 * [[https://dcc.ligo.org/cgi-bin/private/DocDB/ShowDocument?docid=15032|LIGO-T1000517, Optical levers Final Design Review for test masses, recycler mirrors and HAM optical benches]]
 * [[https://dcc.ligo.org/cgi-bin/private/DocDB/ShowDocument?docid=70690|LIGO-G1100961, Long-Term Stability Test for aLIGO Optical Levers]]
 * 
 * [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=418|JGW-G1100418, LCGT vacuum chamber envelope study]]
 * [[https://dcc.ligo.org/cgi-bin/private/DocDB/ShowDocument?docid=15271|LIGO-T1000533, Super-luminescent LED 21 and 50 day trend analysis]]
 * [[https://dcc.ligo.org/cgi-bin/private/DocDB/ShowDocument?docid=13338|LIGO-T1000390, Trade-off Study for the Optical Lever Light Source]]
 * [[https://dcc.ligo.org/cgi-bin/private/DocDB/ShowDocument?docid=11010|LIGO-T1000219, Test mass optical levers preliminary design]]