Differences between revisions 18 and 19
⇤ ← Revision 18 as of 2018-04-28 15:06:53 →
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Editor: KeikoKokeyama
Comment:
← Revision 19 as of 2018-04-28 15:13:43 → ⇥
Size: 2039
Editor: KeikoKokeyama
Comment:
Deletions are marked like this. Additions are marked like this.
Line 38: Line 38:
  * 3rd measurement : /users/CAL/PHASE1/measurements/DTT/T_OLTF/T_OLTF_180428_124641.xml
Line 46: Line 47:
 * Start Open loop transfer function measurement  * Discussed about unknown time delay (1block:1/16384=61usec)
  * 3 known block delay : LSC->BS, DAC, LSC->CAL?
  * aAA, dAA, aAI, dAI
  * iKAGRA has 130usec unknown delay...

 * ??:?? Start Open loop transfer function measurement
  * with envelop, measurement accuracy becomes much better!
  
  * measurements : /users/CAL/PHASE1/measurements/DTT/T_OLTF/T_OLTF_180428_******.xml

Calibration work memo 2018/4/28 09:00-

Site worker : T.Yamamoto(leader), S.Haino, Y.Inoue, S. Tsuchida, A.Miyamoto, T.Yokozawa

Free swinging

  • 09:25 Unlock michelson
  • 9:32 Started line injection to BS
    • K1:LSC-REFLAIR_A_RF17_Q_ERR_256_DQ (RF signal of PD)
    • K1:LSC-REFLAIR_B_LF_OUT_256_DQ (DC signal of PD)
    • K1:CAL-CS_LINE_LINE8_LKIN_OSC_FREQ (injection line frequency)
    • K1:CAL-CS_LINE_MTRX_1_8 (Amplitude of calibration line)

Table of line injection to BS

Time

Freq[Hz]

amp[count]

9:25

0.0

0

9:32

0.2

5

9:33

0.2

10

9:34

0.2

20

9:36

0.2

100

9:47

0.2

250

9:53

0.2

500

  • 10:10 Finish free swining measurement
  • Offline analysis
    • /users/CAL/PHASE1/scripts/EllipseFitting.C

  • Pre-offline best result png

2*pi*2A/lambda = 1.00e+11[cnt/m] = 3.00e+14[cnt/strain]

  • 11:35 Open loop transfer function measurement
    • template diaggui /users/CAL/PHASE1/templates/DTT/T_OPTF.dtt.xml
    • 1st measurement : /users/CAL/PHASE1/measurements/DTT/T_OLTF/T_OLTF_180428_114110.xml
    • 2nd measurement : /users/CAL/PHASE1/measurements/DTT/T_OLTF/T_OLTF_180428_115610.xml
    • 3rd measurement : /users/CAL/PHASE1/measurements/DTT/T_OLTF/T_OLTF_180428_124641.xml
  • 12:15 Coil driver transfer function measurement
    • transfer function measurement between coilout and FC
    • EXC(K1:VIS-BS_TM_COILOUTF_H4_EXC) MEADURE(K1:VIS-BS_SCMON_TM_H4)
      • Be careful, channel name is including SC, but connect to FC.
  • ??:?? Modified calibration model(C00 Strain)
  • Discussed about unknown time delay (1block:1/16384=61usec)

    • 3 known block delay : LSC->BS, DAC, LSC->CAL?

    • aAA, dAA, aAI, dAI
    • iKAGRA has 130usec unknown delay...
  • ??:?? Start Open loop transfer function measurement
    • with envelop, measurement accuracy becomes much better!
    • measurements : /users/CAL/PHASE1/measurements/DTT/T_OLTF/T_OLTF_180428_******.xml

KAGRA/Subgroups/CAL/phase1/20180428 (last edited 2018-04-28 15:18:41 by KeikoKokeyama)