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⇤ ← Revision 8 as of 2018-05-04 23:42:56 →
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Editor: KeikoKokeyama
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← Revision 17 as of 2018-05-05 02:35:11 → ⇥
Size: 2130
Editor: TakaakiYokozawa
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    * The detail is summarized in     * The detail is summarized in ([[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=6924 | JGWDoc6924]])
   * analog anti-imaging filter
   * Coil driver(The transfer function is still investigated, with connection of coil)
   * Force to length transfer function(1/f^2 for higher frequency)
   * Actuator efficiency (Large measurement uncertainties due to fluctuation of optical gain)

 * Injection method
  * k1script:/users/yokozawa/inj_phase1/inj_dat.sh
  * k1script:/users/yokozawa/inj_phase1/inj_dat2.sh
   * Prepare the dat files before injection, scp from other PC, using awgstream we injected signal.

 * Injection waveforms
  * 15 LIGO injection pulsars([[https://losc.ligo.org/s/injections/o1/cw_injections.html|LIGO O1 CWINJ]])
  * 6 continuous sine
  * Lists of continuous injection
|| Pulsar Name || alpha || delta || cosi || freq || f1dot || psi || phi0 || h0[count] || h0[strain] || time shift[count] ||
  

Summary of Continuous Wave Injection at bKAGRA phase1 operation

  • Worker : T.Yokozawa, A.Miyamoto, T.Sawada
  • MICH LOCK flag
    • K1:GRD-LSC_LOCK_STATE_N (16Hz sampling)
      • 1000 is operation mode
  • Injection flag
    • (1) K1:CAL-CS_CALHWI_CW_INJ_SW (16Hz sampling, on:1 off:0)
      • Hardware injection switch of CW injection (used in injection flag)
    • (2) K1:CAL-CS_CALHWI_HWINJ_SW (16Hz sampling, on:1 off:0)
      • Hardware injection master switch (used in injection flag)
    • (3) K1:CAL-CS_CALHWI_(X/Y/BS)_GAIN (16Hz sampling)
      • Signal gain to X, Y, BS
  • Injection signal
    • (4) K1:CAL-CS_CAL_HWI_HARDWARE_DQ (16kHz sampling)
    • Total amplitude of Hardware injection(CBC+CW+TEST)
  • So, total amplitude of CW injection is
    • (1)*(2)*(3)*(4) [count]
    • But, we should apply transfer function between injection port and displacement of each test mass when evaluating the TM displacement
      • time delay between cal model and BS model (~61usec)
      • digital anti-imaging filter
      • time delay in the BS IOP(shared memory for DAC output) (~61usec)
      • time delay in the DAC output (There is unknown issue) (~60usec???)
      • analog anti-imaging filter
      • Coil driver(The transfer function is still investigated, with connection of coil)
      • Force to length transfer function(1/f^2 for higher frequency)
      • Actuator efficiency (Large measurement uncertainties due to fluctuation of optical gain)
  • Injection method
    • k1script:/users/yokozawa/inj_phase1/inj_dat.sh
    • k1script:/users/yokozawa/inj_phase1/inj_dat2.sh
      • Prepare the dat files before injection, scp from other PC, using awgstream we injected signal.
  • Injection waveforms

    • 15 LIGO injection pulsars(LIGO O1 CWINJ)

    • 6 continuous sine
    • Lists of continuous injection

Pulsar Name

alpha

delta

cosi

freq

f1dot

psi

phi0

h0[count]

h0[strain]

time shift[count]

KAGRA/Commissioning/Phase1/Operation/MeasurementsSummary/CWInjection (last edited 2018-05-07 14:53:29 by TakaakiYokozawa)