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| * 2020/03/06(Fri) 14:00-(JST) | * 2020/03/13(Fri) 16:00-(JST) |
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| * Observation run started without O3 joining * Maximum 500kpc BNS detection range * Lock duration is 1h -4h * Alignment dependence * Duty cycle ~65% * We need ~1h for initial alignment * If microseismic motion is large, we could not lock the interferometer * 3/10 - commissioning break |
* Two weeks observation was finished * Maximum 594kpc BNS detection range * Maximum Lock duration is over 10h * 3/10 - commissioning break started * Noise projection * Hammering test (Sat. and Sun. morning time) |
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| * Commissioning break (2020/03/10 9 am -03/24 9 am) * After the commissioning meeting, I and Washimi-san make the schedule. |
* PEM tasks in March * [[http://gwwiki.icrr.u-tokyo.ac.jp/JGWwiki/KAGRA/Subgroups/PEM/MAR2020|task list]] |
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| * PEM tasks March * PEM injection * Acoustic injection * Acoustic injection to PSL room was done * Acoustic injection to REFL table was done. * We set additional accelerometers to the leg of the MCF chamber ground, IMMT1/ISS and PRM chamber leg [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=13293|klog13293]] * Analysis is ongoing by Washimi-san ant TTanaka-san * Hammering test * [[http://gwwiki.icrr.u-tokyo.ac.jp/JGWwiki/KAGRA/Subgroups/PEM/Meeting/200121/Minute|20/01/21 Minute]] * Hammering tests to the OMC, SRs, BS and PR2 were done [http://klog.icrr.u-tokyo.ac.jp/osl/?r=13138|klog13138] * There is large excitation when we touched the legs of the OMC chamber * But we concluded that vibration of the logs of the OMC chamber were not the dominant noise source in the current sensitivity * [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=13152|klog13152]] and [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=13199|klog13199]] * Next target of investigation is the duct between PR2 and BS * Candidate of the 60-90Hz noise * Discussion about the PEM flags * This may not be used during O3 run, but it is good practice toward the O4 run * Help the RRT(Rapid Response Team, quick discussion for the event submitted to the GraceCB) * Seismic motion flag * Evaluate the effect of the FFUs and vacuum pumps by turning on during interferometer lock * If the excitation detected, we have to consider about the FFUs which are working. * Conference * F2F (2020/4/17-20 @ Kashiwa) [[http://gwwiki.icrr.u-tokyo.ac.jp/JGWwiki/LCGT/Meeting/f2f/2020Apr|wiki]] |
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| * GND meeting report (Yokozawa) * Acoustic injection result (Washimi, TTanaka) * Sound in DARM [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=13373]] * Sound in other channels : [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=13298]] * Consideration of current PEM injection analysis : [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=13263]] * Seismometer tilt coupling (Washimi, Miyo) * [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=13321]] * 23.3Hz noise investigation (TTanaka) |
* PEM injection result (Washimi) [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=11550|JGW-G2011550]] |
Weekly PEM meeting
- 2020/03/13(Fri) 16:00-(JST)
- Regular meeting (Japanese)
Web meeting with Zoom2 (Zoom2)
Agenda
General issue
- Interferometer status
- Two weeks observation was finished
- Maximum 594kpc BNS detection range
- Maximum Lock duration is over 10h
- 3/10 - commissioning break started
- Noise projection
- Hammering test (Sat. and Sun. morning time)
- Two weeks observation was finished
- PEM tasks in March
Each progress
- Discussion about the list of the general issue (Yokozawa)
- Bruco analysis (Yokozawa)
- PEM coherence search to the longer locked data (Yokozawa)
PEM injection result (Washimi) JGW-G2011550
- Plan of the lock loss study (Fujikawa)