Differences between revisions 2 and 4 (spanning 2 versions)
Revision 2 as of 2008-07-15 19:58:08
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Editor: YoichiAso
Comment:
Revision 4 as of 2008-07-15 21:27:48
Size: 707
Editor: YoichiAso
Comment:
Deletions are marked like this. Additions are marked like this.
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||ROC [m] ||96 +50/-0 || ||
||Geometric Length (X-arm) [m] ||8.35852 || ||
||Geometric Length (Y-arm) [m] ||8.32295 || ||
||ROC [m] ||96.3 +50/-0 ||117.1+50/-20 ||
||Geometric Length (X-arm) [m] ||8.32732 ||6.61132 ||
||Geometric Length (Y-arm) [m] ||8.29175 ||6.64689 ||

PRC/SRC parameters

PRC

SRC

ROC [m]

96.3 +50/-0

117.1+50/-20

Geometric Length (X-arm) [m]

8.32732

6.61132

Geometric Length (Y-arm) [m]

8.29175

6.64689

The PRC and SRC parameters are chosen to match the recycling cavity modes to the arm cavities, as well as to provide the required Schnupp asymmetry. The Schnupp asymmetry required in vacuum is 5cm but it is less in the above table because only X-arm sees the BS substrate. This allows us to reduce the effective arm length asymmetry for Gaussian beam propagation by a factor of 2.


  • Mathematica note books to compute the above parameters attachment:PRC-ROC.nb

Upgrade_08/Optics/RCParams (last edited 2012-01-03 23:02:41 by localhost)