= Summary of Phase 1 Measurements =
 Summary of Phase 1 measurements for bKAGRA Phase 1 paper.

== Basic configurations ==
 * Duration
  * officially (as Saito-san mentioned): Apr 28 9:00am to May 7 6:00am (GPS time: 1208908818-1209675618)
 * input power [Kokeyama, Nakano]
  * http://klog.icrr.u-tokyo.ac.jp/osl/?r=4377
  * 0.93W at PSL output
  * IMC coupling ratio is (1.20-0.72) / (1.20 - 0.25) = 51 %
  * this means 0.93W * 0.51 / 10 / 2 / 2 / 10 = 1.2 mW at REFL, 0.6 mW at REFL RD PD
 * 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)
   * RFPD transimpedance measurement was done with RFPD with different S/N.
 * vacuum pressure [info from Y. Saito]
  * Xend 3e-4 Pa (room temp)
  * Xarm 7e-6 Pa
  * Xfront 5e-5 Pa (room temp)
  * Yend 2e-5 Pa (cryo)
  * Yarm ~1e-6 Pa? (no monitors)
  * Yfront 8e-5 Pa (temperature rising started on Apr 28)
  * IMC, BS < ~1e-4 Pa (no monitors)
 * suspension and coil driver configurations (difference between the final configuration in [[KAGRA/Subgroups/VIS/ActuatorDesign|ActuatorDesign]])
  * BS IM and TM use high power coil drivers instead of low power.
  * ETMY MN, IM and TM use high power coil drivers instead of low power.
  * ETMX MN and IM V1/2 use high power coil drivers instead of low power. From May 4 or 5, IM H1/2/3,V3 also uses high power. ETMX TM used the default low power (not cryopayload version).

== Michelson initial alignment ==
 * details of slit method
  * slit size ~10mm, at C chamber first, and then A chamber
  * http://klog.icrr.u-tokyo.ac.jp/osl/?r=3848
 * Tcam and baffle PD performance (details-> Tcam paper)
  * Tcam update frequency ~1sec, resolution [Inoue]
  * Tcam resolution?
  * successfully monitored the beam under cryo baffles/shields

== Installation accuracy ==
 * initial alignment
  * https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=7659
 * Schnupp asymmetry measurement
  * http://klog.icrr.u-tokyo.ac.jp/osl/?r=4949
  * http://klog.icrr.u-tokyo.ac.jp/osl/?r=4960
 * IMC length measurement
  * 53.30299(2) m (http://klog.icrr.u-tokyo.ac.jp/osl/?r=4831)

== Cryogenics ==
 * cooling curve (details -> CRY paper) [Hasegawa?]
  * Platform, MN, IM, TM, shields
 * alignment drift, height change during the cool down
  * height change [Inoue]
  * not much info for alignment drift. O(100)urad in yaw [Izumi]
  * http://klog.icrr.u-tokyo.ac.jp/osl/?r=4176

== 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
  * 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 ETMX
  * 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
  * for BS [Fujii]

== Sensitivity and stability ==
 * actuation efficiency drift [Yamamoto]
 * 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)
  * duty factor
   * Total: 68.65%
   * 4/28: 81.66%
   * 4/29: 97.00%
   * 4/30: 90.36%
   * 5/01: 87.09%
   * 5/02: 86.88%
   * 5/03: 19.97%
   * 5/04: 33.58%
   * 5/05: 64.18%
   * 5/06: 55.36%
  * Michelson was lockable if ETMX/Y angular fluctuation is less than a few urad. Earthquakes shook ETMY to O(100) urad.
 * 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
 * magnetic and acoustic noise from PEM injection (details -> PEM paper?)
  * 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
  * http://klog.icrr.u-tokyo.ac.jp/osl/?r=4954
 * Earthquake in Hawaii 2018-05-04 22:32:55 (UTC)
  * difference between iKAGRA and Phase-1?
   * ETMY takes ~2-3 hours to damp enough for locking. ETMX takes ~1 hour.
  * http://klog.icrr.u-tokyo.ac.jp/osl/?r=4948
  * http://klog.icrr.u-tokyo.ac.jp/osl/?r=4955
 * calibration [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=8320|JGW-G1808320]] [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=8989|JGW-G1808989]]

== 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), GIF-X (1.5-km CMRR), IMC (26.65-m CMRR)
  * CMRR measurement with 3-km Michelson would be difficult
  * IMC CMRR [Nakano]
 * differential arm length drift, correlation between GIF-X
 * air pressure [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=8316|JGW-G1808316]]

== Data acquisition, data transfer ==
 * latency, speed, total amount
 * Data rate ~5.1MB/sec (main),  ~6.6MB/sec (all) [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=8320|JGW-G1808320]]

== Hardware injection test ==
 * CBC injection(2018/4/30 Night shift)
 * CW injection(2018/5/2 Night shift)
  * [[KAGRA/Commissioning/Phase1/Operation/MeasurementsSummary/CWInjection|CW Injection]]