Differences between revisions 1 and 8 (spanning 7 versions)

Summary of Phase 1 Measurements

Summary of Phase 1 measurements for bKAGRA Phase 1 paper.

Basic configurations

input power
power at detection RF PD
- Reflection from one end mirror 0.20 mW (http://klog.icrr.u-tokyo.ac.jp/osl/?r=4876)
- At dark fringe 56 +/- 10 uW (http://klog.icrr.u-tokyo.ac.jp/osl/?r=4903)
- signal chain (http://klog.icrr.u-tokyo.ac.jp/osl/?r=4920)
modulation frequency, modulation depth
- 16.87293 MHz (http://klog.icrr.u-tokyo.ac.jp/osl/?r=4831)
- beta = 0.12 (from error signal amplitude), 0.2 (from RF power applied to EOM) (http://klog.icrr.u-tokyo.ac.jp/osl/?r=4876 , http://klog.icrr.u-tokyo.ac.jp/osl/?r=4907)
vacuum level
suspension and coil driver configurations (difference between the final configuration)

Michelson initial alignment

details of slit method
Tcam and baffle PD performance (details-> Tcam paper)
- time delay, resolution ...
- succeefully monitored the beam under cryo baffles/shields

Installation accuracy

Schunupp asymmetry measurement
IMC length measurement
- 53.30299(2) m (http://klog.icrr.u-tokyo.ac.jp/osl/?r=4831)

Cryogenics

cooling curve (details -> CRY paper)
alignment drift during the cool down

Suspension characterization

length actuation efficiency measurements for BS, comparison with expectations
- http://klog.icrr.u-tokyo.ac.jp/osl/?r=4811
- http://klog.icrr.u-tokyo.ac.jp/osl/?r=4909
length actuation efficiency measurements for ETMX and Y, comparison with expectations
seismic attenuation ratio measurements for ETMY and Y
- http://klog.icrr.u-tokyo.ac.jp/osl/?r=4927
TF difference between ETMX and ETMY (room temperature and cryogenic)
vertical to length coupling, other coupling measurements

Sensitivity and stability

actuation efficiency drift
alignment drift of suspensions
visibility and optical gain drift
- http://klog.icrr.u-tokyo.ac.jp/osl/?r=4775
sensitivity stability, duty factor, lock duration (similar plots in https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=5177)
Noise budget
magnetic and acoustic noise from PEM injection (details -> PEM paper?)

Seismic noise, arm length drift

seismic spectra stability (similar plots in https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=2971)
- http://klog.icrr.u-tokyo.ac.jp/osl/?r=4942
differential seismic noise measured by Michelson (3-km CMRR)
differential arm length drift, correlation between GIF-X

Hardware injection test

CBC injection(2018/4/30 Night shift)
CW injection(2018/5/2 Night shift)

KAGRA/Commissioning/Phase1/Operation/MeasurementsSummary (last edited 2018-10-01 20:39:54 by YutaMichimura)

-  ⇤ ← Revision 1 as of 2018-04-28 05:16:35 → 
  Size: 1914
  Editor: YutaMichimura
  Comment:
+   ← Revision 8 as of 2018-05-04 22:53:09 → ⇥
  Size: 3226
  Editor: KeikoKokeyama
  Comment:
-Deletions are marked like this.
+Additions are marked like this.
 Line 7:
+  * Reflection from one end mirror 0.20 mW (http://klog.icrr.u-tokyo.ac.jp/osl/?r=4876)
  * At dark fringe 56 +/- 10 uW (http://klog.icrr.u-tokyo.ac.jp/osl/?r=4903)
  * signal chain (http://klog.icrr.u-tokyo.ac.jp/osl/?r=4920)
-Line 9:
+Line 12:
+  * beta = 0.12 (from error signal amplitude), 0.2 (from RF power applied to EOM)  (http://klog.icrr.u-tokyo.ac.jp/osl/?r=4876 , http://klog.icrr.u-tokyo.ac.jp/osl/?r=4907)
-Line 16:
+Line 20:
+  * succeefully monitored the beam under cryo baffles/shields
-Line 24:
+Line 29:
+ * alignment drift during the cool down
-Line 26:
+Line 32:
- * length actuation efficiency measurements for BS, comparison with expectations (http://klog.icrr.u-tokyo.ac.jp/osl/?r=4811)
+ * length actuation efficiency measurements for BS, comparison with expectations
  * http://klog.icrr.u-tokyo.ac.jp/osl/?r=4811
  * http://klog.icrr.u-tokyo.ac.jp/osl/?r=4909
-Line 28:
+Line 36:
+  * http://klog.icrr.u-tokyo.ac.jp/osl/?r=4898
  * http://klog.icrr.u-tokyo.ac.jp/osl/?r=4899
  * http://klog.icrr.u-tokyo.ac.jp/osl/?r=4919
  * http://klog.icrr.u-tokyo.ac.jp/osl/?r=4925
 * seismic attenuation ratio measurements for ETMY and Y
  * http://klog.icrr.u-tokyo.ac.jp/osl/?r=4927
-Line 34:
+Line 48:
- * visibility and optical gain drift (http://klog.icrr.u-tokyo.ac.jp/osl/?r=4775)
+ * visibility and optical gain drift
  * http://klog.icrr.u-tokyo.ac.jp/osl/?r=4775
-Line 36:
+Line 51:
- * Noise budget (http://klog.icrr.u-tokyo.ac.jp/osl/?r=4834)
+ * Noise budget
  * http://klog.icrr.u-tokyo.ac.jp/osl/?r=4834
  * http://klog.icrr.u-tokyo.ac.jp/osl/?r=4910
  * http://klog.icrr.u-tokyo.ac.jp/osl/?r=4944
-Line 38:
+Line 56:
+  * http://klog.icrr.u-tokyo.ac.jp/osl/?r=4891
  * http://klog.icrr.u-tokyo.ac.jp/osl/?r=4933
  * http://klog.icrr.u-tokyo.ac.jp/osl/?r=4871
  * http://klog.icrr.u-tokyo.ac.jp/osl/?r=4940
-Line 41:
+Line 63:
+  * http://klog.icrr.u-tokyo.ac.jp/osl/?r=4942
-Line 43:
+Line 66:
+== Hardware injection test ==
 * CBC injection(2018/4/30 Night shift)
 * CW injection(2018/5/2 Night shift)