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* Michelson gardian was implemented. Lock is identified by the REFL and a tripped state of BS. * Lock lasts typically several of 10 minutes. * PR2 had a jump caused by a DAC glitch once a day. Sampling rate will be lowered? * PR3 also had jumps caused by DAC glitches. * Whitening filter was implemented at demodulated signal of RFPD. Sensitivity will be improved. * Modulation frequency was tuned to iMC length. Optical gain increased 1.4 times. |
* Michelson lock lasted longer than 2 and half hours! * Alignment control from IFO to ETMX was implemented by dithering ETMX. * PR3 alignment was implemented by baffle signal. * ETMX damping might be a cause of lock lost. * ETMY yaw damping inclease pitch motion by coupling. It will be improved today.(Ushiba) * BS oplev is fed back to not only TM but also IM. (Arai) * WAB: *Akutsu * Heat consumption is estimated well. 10ppm produce 4W and it will be absorbed by WAB and now it is simulated by heater. * Equilibrium temperature was 21K. * Damping became to strong in low temperature. * Wire of RM was broken on SR3 during tightening clamp. * CAL: *Yamamoto * line injection is being tested. |
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KAGRA Commissioning Wiki
Task list
Schedule
2017/4/17 updated
Working people assignment
- *: responsible person
Meetings
Morning meeting
- Date and time: Every weekday, 9AM
- Location: Control room, or eZuce
2018/4/26(Thur.)
* Remote participants by eZuce: None
Report of work (*:responsible person)
- IFO: *Izumi, Enomoto + many
- Michelson lock lasted longer than 2 and half hours!
- Alignment control from IFO to ETMX was implemented by dithering ETMX.
- PR3 alignment was implemented by baffle signal.
- ETMX damping might be a cause of lock lost.
- ETMY yaw damping inclease pitch motion by coupling. It will be improved today.(Ushiba)
- BS oplev is fed back to not only TM but also IM. (Arai)
- WAB: *Akutsu
- Heat consumption is estimated well. 10ppm produce 4W and it will be absorbed by WAB and now it is simulated by heater.
- Equilibrium temperature was 21K.
- Damping became to strong in low temperature.
- Wire of RM was broken on SR3 during tightening clamp.
- CAL: *Yamamoto
- line injection is being tested.
Work plan (*:responsible person)
- IFO: *Izumi, Enomoto, Nakano + many
- Measurement without locking morning, measurement with locking in the afternoon.
Laser hazard
- [AM]
- IR: Upstream SR2-3 line, Xend 1F, Yend 1F
- Green: PR2, Xend 1F
- [PM]
- IR: Upstream SR2-3 line, Xend 1F, Yend 1F
- Green: PR2, Xend 1F
- [night]
- IR: Upstream SR2-3 line, Xend 1F, Yend 1F
- Green: PR2, Xend 1F
Weekly
- week of 4/23
- Michelson control.
- 4/28 Operation start
Issues
- PR2 had a jump caused by a DAC glitch once a day. Sampling rate will be lowered?
- PR3 also had jumps caused by DAC glitches.
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Weekly meeting
- Date and time: Every Tuesday, 11AM
- Location: Meeting room at Hokubukaikan, or eZuce, Polycom
No. |
Date |
Agenda |
Schedule |
Minute |
Files |
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27 |
2018/4/17 |
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26 |
2018/4/10 |
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25 |
2018/4/3 |
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24 |
2018/3/27 |
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23 |
2018/3/20 |
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22 |
2018/3/13 |
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21 |
2018/3/6 |
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20 |
2018/2/27 |
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19 |
2018/2/20 |
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18 |
2018/2/13 |
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17 |
2018/2/6 |
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16 |
2018/1/30 |
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15 |
2018/1/23 |
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14 |
2018/1/16 |
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13 |
2018/1/9 |
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12 |
2017/12/19 |
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11 |
2017/12/12 |
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10 |
2017/11/28 |
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9 |
2017/11/14 |
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8 |
2017/11/7 |
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7 |
2017/10/31 |
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6 |
2017/10/24 |
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5 |
2017/10/17 |
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4 |
2017/10/10 |
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3 |
2017/10/3 |
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2 |
2017/9/26 |
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1 |
2017/9/19 |
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Other meetings
Meeting for pump down test at ETMX 2 (Minute, Check list)
Meeting for pump down test at ETMX 1 (Minute, Check list)
Meeting for pump down test at Center are (Minute, Check list)
Meeting for pump down and cooling at ETMY3 (Minute, Check list)
Meeting for pump down and cooling at ETMY2 (Minute, Check list)
Meeting for pump down and cooling at ETMY1 (Minute, Check list)
Meeting for closing ETY (Minute)
Meeting about PR2 pitch misalignment (Minute)
Documents
Communication tools