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VIS (General)
satoru.ikeda - 16:02 Friday 17 September 2021 (18296) Print this report
Updating Model Files

Update of VIS model file

Request from Ushiba-san and Yamamoto-san
 Currently, it takes several tens of seconds for Guardian to check the stability of the suspension.
 In order to shorten this time, they would like to shorten the state transition time by determining the RMS of the DAMP, IDAMP, and OLDAMP inputs.

 We responded by connecting RMS to the inputs of DAMP, IDAMP, and OLDAMP, and outputting the output to MON.

 EPICS channel :
  SR3 is not a common file, so it is unchanged.
  Some channels are not used for some suspensions.

  K1:VIS-{optic}_IP_IDAMP_{L,T,Y}_IN1_RMS_MON
  K1:VIS-{optic}_{F0,F1,F3,F3,SF}_DAMP_GAS_IN1_RMS_MON
  K1:VIS-{optic}_BF_DAMP_{L,T,V,R,P,Y}_IN1_RMS_MON
  K1:VIS-{optic}_BF_OLDAMP_{L,P,Y}_IN1_RMS_MON
  K1:VIS-{optic}_BF_MNOLDAMP_{L,T,V,R,P,Y}_IN1_RMS_MON
  K1:VIS-{optic}_BF_PFOLDAMP_{L,P,Y}_IN1_RMS_MON
   optic: ETMX,ETMY,ITMX,ITMY,BS,SR2,SR3,PRM,PR2,PR3

  K1:VIS-{optic}_MN_DAMP_{L,T,V,R,P,Y}_IN1_RMS_MON
  K1:VIS-{optic}_MN_OLDAMP_{L,P,Y}_IN1_RMS_MON
  K1:VIS-{optic}_MN_MNOLDAMP_{L,T,V,R,P,Y}_IN1_RMS_MON
  K1:VIS-{optic}_MN_PFOLDAMP_{L,P,Y}_IN1_RMS_MON
  K1:VIS-{optic}_IM_DAMP_{L,T,V,R,P,Y}_IN1_RMS_MON
  K1:VIS-{optic}_IM_OLDAMP_{L,P,Y}_IN1_RMS_MON
  K1:VIS-{optic}_TM_OLDAMP_{L,P,Y}_IN1_RMS_MON
   optic: ETMX, ETMY, ITMX, ITMY, BS, SR2, SR3, PRM, PR2, PR3, MCI, MCE, MCO, IMMT1, IMMT2, OMMT1, OMMT2, OSTM

 This update requires support for K-Log#18293.

Update non-VIS model files

Request from Oshino-san
 Add EPICS channel to SdfManage
 K1:PEM-{TEMPERATURE,HUMIDITY,RSSI,BATT,STATUS,TEMP_NOMINAL}_RACK_SB1

Ikeda's work
 Add EPICS channel for SR2_STM Picomotor
 K1:PICO-SR2_STM_{1,2}_{ACTUAL_POSITION,TARGET_POSITION}

GitID:
 Before: release/0.1.30
 After: release/0.1.31
GPSTime: 1315893488

Non-image files attached to this report
Comments to this report:
takahiro.yamamoto - 11:50 Saturday 18 September 2021 (18301) Print this report
RMS monitor channels don't seem to works well because of short time window.

Attachments show error signals and RMS channels around the time when IP loop were being engaging.
Both two attachment show the same time. Difference is only the range of Y-axis.

Current time window of RMS calculation is N=1024 (=0.5s for 2kHz model).
Because resonant frequency of tower are much lower than the time window of RMS calculation,
computed RMS is not so different from just an absolute value of the original signal.

Large 'N' for RMS calculation is not so desirable because we need a lot of RMS channels for our purpose.
Hmm...
Images attached to this comment
satoru.ikeda - 17:28 Friday 24 September 2021 (18346) Print this report

Due to conflicts with HDD replacement work, the work time was insufficient.
Today, only Type-A was updated.
Next week, I will update Type-B, Bp, and C.

Request from Ushiba-san
Add ACT align matrix before EUL2COIL and EUL2OSEM matrix.

 Add k1:VIS-$(optic)_{IP,BF,MN,IM,TM}_ACTALIGN_x_x
   optic: ETMX, ETMY, ITMX, ITMY
     Others will be updated next time.
     BS, SR2, SR3, PRM, PR2, PR3, MCI, MCE, MCO, IMMT1, IMMT2, OMMT1, OMMT2, OSTM

 EUL2COIL:
  IP:3x3, BF:6x6
 EUL2OSEM:
  MN:6x6, IM:6x6, TM:3x3
 The initial value of Matrix is the unit matrix.

Request from Ushiba-san and Yamamoto-san
Changed the averaging time of the RMS monitor that was added last week.

 Yamamoto-san's measurement of Tower's GAS suggested that the same time as the ramp time would be sufficient.
 Changed the RMS time and data volume to the following values to match the ramp time.

 Tower:
  GAS(F0,F1,F2,F3,BF): 20sec * 2K = 40960
  IP: 30sec * 2K = 61440
  BF: 60sec * 2K = 122880

 Payload:
  5sec * 16K = 81920

 [Target].
  Window_size of TrueRMS in front of the next RMS_MON
  K1:VIS-{optic}_IP_IDAMP_{L,T,Y}_IN1_RMS_MON
  K1:VIS-{optic}_{F0,F1,F3,F3,SF}_DAMP_GAS_IN1_RMS_MON
  K1:VIS-{optic}_BF_DAMP_{L,T,V,R,P,Y}_IN1_RMS_MON
  K1:VIS-{optic}_BF_OLDAMP_{L,P,Y}_IN1_RMS_MON
  K1:VIS-{optic}_BF_MNOLDAMP_{L,T,V,R,P,Y}_IN1_RMS_MON
  K1:VIS-{optic}_BF_PFOLDAMP_{L,P,Y}_IN1_RMS_MON
   optic: ETMX,ETMY,ITMX,ITMY
     Others will be updated next time.
     BS,SR2,SR3,PRM,PR2,PR3

  K1:VIS-{optic}_MN_DAMP_{L,T,V,R,P,Y}_IN1_RMS_MON
  K1:VIS-{optic}_MN_OLDAMP_{L,P,Y}_IN1_RMS_MON
  K1:VIS-{optic}_MN_MNOLDAMP_{L,T,V,R,P,Y}_IN1_RMS_MON
  K1:VIS-{optic}_MN_PFOLDAMP_{L,P,Y}_IN1_RMS_MON
  K1:VIS-{optic}_IM_DAMP_{L,T,V,R,P,Y}_IN1_RMS_MON
  K1:VIS-{optic}_IM_OLDAMP_{L,P,Y}_IN1_RMS_MON
  K1:VIS-{optic}_TM_OLDAMP_{L,P,Y}_IN1_RMS_MON
   optic: ETMX, ETMY, ITMX, ITMY
     Others will be updated next time.
     BS, SR2, SR3, PRM, PR2, PR3, MCI, MCE, MCO, IMMT1, IMMT2, OMMT1, OMMT2, OSTM

GitID:
 Before: release/0.1.32
 After: release/0.1.33
GpsTime:1316507134

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Non-image files attached to this comment
takahiro.yamamoto - 17:50 Friday 24 September 2021 (18350) Print this report
It seems to be working as expected.
Integration time should be adjusted with considering resonant frequency of each stage, ramp time, and so on.

Fig.1 shows error signals and rms monitors of GAS local loops after being engaged.
The behavior of signals from pre-engage to post-engage is shown in Fig.2.
It's drastically improved from klog#18301.
Images attached to this comment
takahiro.yamamoto - 9:25 Monday 27 September 2021 (18351) Print this report
RMS channels help to reduce waiting time in ISOLATING and ALIGNING states.
(Integration time of BF_Y may be too long.)

Attachments are the error signal and RMS channel of each loop.
Y-cursors represent threshold of ISOLATED and ALIGNED.
The 2nd T-cursor shows the timing at being judged as ISOLATED or ALIGNED in old guardian scheme.
A new guardian can judge as ISOLATED or ALIGNED at the cross point of RMS channel and Y-cursor.
So in all cases (though there is a suspicion about BF_Y), waiting time can be reduced.
Images attached to this comment
satoru.ikeda - 13:41 Friday 01 October 2021 (18417) Print this report

Updated the VIS model file.

Continued from last week, Type-B, Bp, and C have been updated.
No model files have been updated.

Request from Ushiba-san
Add ACT align matrix before EUL2COIL and EUL2OSEM matrix.

 Add k1:VIS-$(optic)_{IP,BF,MN,IM,TM}_ACTALIGN_x_x
   optic: ETMX, ETMY, ITMX, ITMY, BS, SR2, SR3, PRM, PR2, PR3, MCI, MCE, MCO, IMMT1, IMMT2, OMMT1, OMMT2, OSTM
  (SRM is not supported because it is not a common file)

 EUL2COIL:
  IP:3x3, BF:6x6
 EUL2OSEM:
  MN:6x6, IM:6x6, TM:3x3
 The initial value of Matrix is the unit matrix.

Request from Ushiba-san and Yamamoto-san
Changed the averaging time of the RMS monitor added last week.

 Changed the RMS time and data volume to the following values to match the ramp time.
 BF_Y was thought to be too long at 30sec, but we will leave it at this value until final time adjustment.

 Tower:
  GAS(F0,F1,F2,F3,BF): 20sec * 2K = 40960
  IP: 30sec * 2K = 61440
  BF: 60sec * 2K = 122880

 Payload:
  5sec * 16K = 81920

 [Target].
  Window_size of TrueRMS in front of the next RMS_MON
  K1:VIS-{optic}_IP_IDAMP_{L,T,Y}_IN1_RMS_MON
  K1:VIS-{optic}_{F0,F1,F3,F3,SF}_DAMP_GAS_IN1_RMS_MON
  K1:VIS-{optic}_BF_DAMP_{L,T,V,R,P,Y}_IN1_RMS_MON
  K1:VIS-{optic}_BF_OLDAMP_{L,P,Y}_IN1_RMS_MON
  K1:VIS-{optic}_BF_MNOLDAMP_{L,T,V,R,P,Y}_IN1_RMS_MON
  K1:VIS-{optic}_BF_PFOLDAMP_{L,P,Y}_IN1_RMS_MON
   optic: ETMX,ETMY,ITMX,ITMY,BS,SR2,SR3,PRM,PR2,PR3
   (SRM is not supported because it is not a common file)

  K1:VIS-{optic}_MN_DAMP_{L,T,V,R,P,Y}_IN1_RMS_MON
  K1:VIS-{optic}_MN_OLDAMP_{L,P,Y}_IN1_RMS_MON
  K1:VIS-{optic}_MN_MNOLDAMP_{L,T,V,R,P,Y}_IN1_RMS_MON
  K1:VIS-{optic}_MN_PFOLDAMP_{L,P,Y}_IN1_RMS_MON
  K1:VIS-{optic}_IM_DAMP_{L,T,V,R,P,Y}_IN1_RMS_MON
  K1:VIS-{optic}_IM_OLDAMP_{L,P,Y}_IN1_RMS_MON
  K1:VIS-{optic}_TM_OLDAMP_{L,P,Y}_IN1_RMS_MON
   optic: ETMX, ETMY, ITMX, ITMY, BS, SR2, SR3, PRM, PR2, PR3, MCI, MCE, MCO, IMMT1, IMMT2, OMMT1, OMMT2, OSTM
   (SRM is not supported because it is not a common file)

GitID:
 Before: release/0.1.34
 After: release/0.1.35
GpsTime:1317096529

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Non-image files attached to this comment
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