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Satellite Meeting on Future Upgrade of KAGRA
Date/Time/Venue
Dec. 4th (Tue) 13:30 - 17:30
Large seminar room (3201) in Subaru building (the same as the main F2F meeting)
Zoom connection: https://zoom.us/j/5045179604
Program
Time |
Subject and Title |
Speaker |
File |
13:30-13:45 |
Explanation of the context |
Y. Aso |
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13:45-14:45 |
Report of past activities in Advanced R&D group |
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Summary of Past Discussions on KAGRA Upgrade |
Y. Michimura |
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14:45-15:00 |
Break |
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15:00-16:15 |
Contributed talks |
|
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10 min |
R&D of 100kg sapphire crystals |
E. Hirose |
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10 min |
R&D of frequency dependent squeezer |
Ray-Kuang Lee/NTHU |
|
10 min |
R&D of Newtonian noise measurement |
Tomofumi Shimoda (U-Tokyo) |
|
20 min |
TAMA300 filter cavity exp. status |
Yu-hang Zhao and Chien-Ming Wu |
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10min |
EPR entanglement |
K. Somiya |
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10min |
Engineering management for KAGRA upgrade |
Y. Aso |
|
16:15-16:30 |
Break |
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16:30-17:30 |
Discussion |
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Minutes
Introduction by Aso
- Why FPC is proposed ?
- Purpose/Scope of FPC
- Steps to start FPC
Summary of the past upgrade studies by Michimura
- Extensive studies have already been carried out
- Several options were compared
- High frequency optimized plan seems better
- Candidates for short term upgrade (cheap, quick) and longer term upgrade (larger change and more expensive) were discussed
Contributed talks by various people
- 100kg sapphire (Hirose)
- Frequency dependent squeezing (Lee)
- Newtonian noise measurement (Shimoda)
- TAMA300 filter cavity (Zhao, Wu)
- EPR entanglement (Somiya)
- Engineering management (Aso)
Discussion
What should be included in the white paper
- Scientific motivation
- Survey of the current technologies
- Cheap, Expensive
- Ready, Not ready
- Limits of the current facility
- Trade-off studies
- Two plans
- Near term upgrade plan
- Longer term upgrade plan
- Back up plans
R&Ds to be done
Budget for R&D
- Budget estimate
- Project execution plan
Schedule for the white paper
- Work in progress draft to be presented @ KIW in Feb 2019
- Get feedbacks from Virgo people
- First draft to be circulated @ April 2019 F2F
- Final version to be put for approval @ Aug 2019 F2F
How to proceed the discussion ?
- Make a skelton of the white paper first
- Dig deeper into each item with sub-groups
Other discussion
- Definitions of short term and longer term upgrades
- Short term: after O4 (~ in 5 years)
- Longer term: after O5-6 ? ~ in 10 years
- This should be discussed in FPC
- How to get funding should be discussed with relevant people (ICRR, senior people in collaborating countries, etc) in parallel with the white paper writing.
- Need to keep ICRR in the circle.
- Review (external/internal) of the white paper may be necessary before submitting to the KSC and EO for approval.
- The white paper should be updated with changing environment
How RDC should select KAGRA project R&Ds before the white paper is finalized ?
- RDC may be able to make interim approvals
These interim KAGRA project R&Ds should be checked against the white paper once it is ready
- Should be discussed more in the KSC session.
- RDC may be able to make interim approvals