Differences between revisions 4 and 9 (spanning 5 versions)

IMC Information

Current IMC servo topology:
- https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/DocDB/ShowDocument?docid=7105
Common mode servo board configuration:
- slow path to AOM???
IMC sideband frequency: 13.78 MHz
- https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/DocDB/ShowDocument?docid=5493
Measured IMC modulation depth: ~0.1 rad (measured??)
- http://klog.icrr.u-tokyo.ac.jp/osl/?r=3709
Measured IMC finesse: 540 +/- 70
- http://klog.icrr.u-tokyo.ac.jp/osl/?r=618
Measured IMC length: 53.3 m
- http://klog.icrr.u-tokyo.ac.jp/osl/?r=616 (Could be slightly different right now since we had re-installation work after this measurement)
Measured IMC mode matching ratio: 86.2 %
- https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/DocDB/ShowDocument?docid=5019 (Could be fairly different right now since we had re-installation work after this measurement)
Measured MCe RoC: 37.33(9) m
- http://klog.icrr.u-tokyo.ac.jp/osl/?r=711
Measured AOM actuation efficiency: 5.064(7) MHz/V
- http://klog.icrr.u-tokyo.ac.jp/osl/?r=3172
Measured laser PZT actuation efficiency: 1.48MHz/V
- http://klog.icrr.u-tokyo.ac.jp/osl/?r=2853
Measured laser temperature actuation efficiency:
- ???
Measured actuation efficiency: 17.2 MHz/V(MCe), 15.9 MHz/V(MCi), 14.9 MHz/V(MCo) @DC
- http://klog.icrr.u-tokyo.ac.jp/osl/?r=2985
- http://gwclio.icrr.u-tokyo.ac.jp/lcgtsubgroup/inoutoptics/2015/06/mce625-26.html#comments
Measured IMC optical gain: 18.6 V/MHz (cavity pole=5.6kHz)
- http://klog.icrr.u-tokyo.ac.jp/osl/?r=2979
Reference Cavity parameters:
- ???
Calibrated IMC WFS noise level, and some noise hunting:
- http://klog.icrr.u-tokyo.ac.jp/osl/?r=3366
- http://klog.icrr.u-tokyo.ac.jp/osl/?r=3335
Accelerometer on the PSL table:
IMC length NoiseBudget code:
- https://granite.phys.s.u-tokyo.ac.jp/svn/LCGT/trunk/kagranoisebudget/FSS/IOO.slx
- https://granite.phys.s.u-tokyo.ac.jp/svn/LCGT/trunk/kagranoisebudget/FSS/IOO_params.mat
Frequency stabilization servo modeling (design):
- https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/DocDB/ShowDocument?docid=3330
- https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/DocDB/ShowDocument?docid=2908

KAGRA/Commissioning/CommissioningWorkshop2017/IMCInfo (last edited 2017-11-28 19:23:27 by TomotadaAkutsu)

-  ⇤ ← Revision 4 as of 2017-11-27 21:42:18 → 
  Size: 1374
  Editor: YutaMichimura
  Comment:
+   ← Revision 9 as of 2017-11-27 22:15:37 → ⇥
  Size: 2413
  Editor: YutaMichimura
  Comment:
-Deletions are marked like this.
+Additions are marked like this.
 Line 2:
+ * Current IMC servo topology:
  * https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/DocDB/ShowDocument?docid=7105

 * Common mode servo board configuration:
  * slow path to AOM???

 * IMC sideband frequency: 13.78 MHz
  * https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/DocDB/ShowDocument?docid=5493

 * Measured IMC modulation depth: ~0.1 rad (measured??)
  * http://klog.icrr.u-tokyo.ac.jp/osl/?r=3709

 * Measured IMC finesse: 540 +/- 70
  * http://klog.icrr.u-tokyo.ac.jp/osl/?r=618
-Line 14:
+Line 29:
- * Measured MCe actuation efficiency: 6.9 um/V (any data for MCi and MCo?)
+ * Measured laser PZT actuation efficiency: 1.48MHz/V
  * http://klog.icrr.u-tokyo.ac.jp/osl/?r=2853

 * Measured laser temperature actuation efficiency:
  * ???

 * Measured actuation efficiency: 17.2 MHz/V(MCe),  15.9 MHz/V(MCi),  14.9 MHz/V(MCo) @DC
  * http://klog.icrr.u-tokyo.ac.jp/osl/?r=2985
-Line 16:
+Line 38:
+ * Measured IMC optical gain: 18.6 V/MHz (cavity pole=5.6kHz)
  * http://klog.icrr.u-tokyo.ac.jp/osl/?r=2979

 * Reference Cavity parameters:
  * ???
-Line 27:
+Line 55:
-  * (UPDATE SVN)
+  * https://granite.phys.s.u-tokyo.ac.jp/svn/LCGT/trunk/kagranoisebudget/FSS/IOO.slx
  * https://granite.phys.s.u-tokyo.ac.jp/svn/LCGT/trunk/kagranoisebudget/FSS/IOO_params.mat