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Size: 4927
Comment:
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Size: 5302
Comment:
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| Deletions are marked like this. | Additions are marked like this. |
| Line 52: | Line 52: |
| ||Small accelerometer ||a few|| Not known||No||No||Yes?||N/A|| || | ||Small accelerometer ||a few|| KISTLER Accelerometer Type 8640A5||No||No||Yes||[[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=7218|S1707218]],[[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=7219|7219]],[[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=7221|7221]],[[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=7222|7222]]|| || |
PEM injection in bKAGRA phase1
(Description will be translated to English at some point)
Aims
bKAGRA phase1 における、
- 干渉計感度への環境雑音の影響のプロジェクション
- 散乱光のキャラクタリゼーション
- 雑音の形態学的スタディ
Injection types
- Acoustic injection (AcI)
- Magnetic injection (MaI)
- Shaking injection (ShI)
What we want to do
Necessary
- Measuring coupling functions between environmental noise and interferometer signal
- Measuring environmental noise using several sensors
- Spectrogram of the interferometer signal during injection
If possible
- Narrow down coupling locations
- Narrow down environmental noise source locations
- Switch off test
- Identify line noise sources
- RF noise measurement around RF modulation sideband frequencies.
Candidates of measurement points
- PSL
- IMC (mirrors, refl table)
- IFI
- PRM
- BS
- ETMX/Y (1F,2F)
- WAB
- Arms
(including racks of each points for control and DAQ.)
Schedule
(VERY ROUGH)
- Before bKAGRA phase1 run (Detailed date has not been fixed): Preparation and rehearsal of PEM injection (end-to-end test, maybe without actual injection)
- After bKAGRA phase1 run (Detailed date has not been fixed): Injection test in tunnel
- After injection test: Analysis, make report, (if possible) write paper
Sensors and instruments information
Common
Items |
Numbers |
Part Number |
To be ordered |
Ordered |
We have |
S/N |
Comment |
Amplifier |
1 |
QSC RMX5050a |
No |
No |
Yes |
N/A |
|
Head set |
several |
Not known |
Yes |
No |
No |
N/A |
|
Small accelerometer |
a few |
KISTLER Accelerometer Type 8640A5 |
No |
No |
Yes |
|
|
Laser accelerometer |
1 |
Not known |
No |
No |
Yes? |
N/A |
RION |
Clay(?) to fix accelerometer |
a few |
Not known |
No |
No |
Yes? |
N/A |
|
Cables and connectors |
many |
Not known |
Yes? |
No |
No? |
N/A |
|
Low noise filter |
1 |
Not known |
Yes |
No |
No |
N/A |
Like SR560. Hand made? |
Function generator |
1 |
Not known |
No? |
No |
Yes? |
N/A |
|
Acoustic injection
Items |
Numbers |
Part Number |
To be ordered |
Ordered |
We have |
S/N |
Comment |
Large speaker |
2 |
JBL JRX212 |
No |
No |
Yes |
N/A |
|
Small speaker (PZT) |
1 |
Not known |
Yes |
No |
No |
N/A |
(If possible) |
Microphone |
2 |
B&K 4188 + pre-amp |
No |
No |
Yes |
N/A |
|
Seismometer |
1 |
Trillium compact 120-SV1 |
No |
No |
Yes |
|
|
Earplug |
several |
Not known |
Yes |
No |
No |
N/A |
|
Rubber stack |
8 |
Not known |
Yes |
No |
No |
N/A |
(If possible) |
Horn |
1 |
Not known |
Yes |
No |
No |
N/A |
|
Magnetic injection
Items |
Numbers |
Part Number |
To be ordered |
Ordered |
We have |
S/N |
Comment |
Large Coil |
2 |
Not known |
Yes |
No |
No |
N/A |
a few Ohms, ~1 m dia. |
Small Coil |
1 |
Not known |
Yes |
No |
No |
N/A |
(If possible) |
Magnetometer |
2 |
Mag-13MCL |
No? |
No |
Yes? |
N/A |
|
Small magnetometer |
2 |
Not known |
Yes |
No |
No |
N/A |
(If possible) |
Shaker injection
Items |
Numbers |
Part Number |
To be ordered |
Ordered |
We have |
S/N |
Comment |
Large Magnet coil shaker |
1 |
Not known |
No |
No |
Yes |
N/A |
NAOJ |
Small PZT shaker |
a few |
Not known |
Yes |
No |
No |
N/A |
|
Mallet |
1 |
Not known |
Yes |
No |
No |
N/A |
|
Others
Items |
Numbers |
Part Number |
To be ordered |
Ordered |
We have |
S/N |
Comment |
RF antenna |
2 |
Not known |
Yes |
No |
No |
N/A |
Could be made ourselves? |
RF signal amplifier |
2 |
Not known |
Yes |
No |
No |
N/A |
Could be made ourselves? |
RF generator |
1 |
Not known |
Yes |
No |
No |
N/A |
(If possible. Can Moku:Lab be used?) |
RF spectrum analyzer |
1 |
Not known |
No |
No |
Yes |
N/A |
Moku:Lab |
To be prepared
- CDS (Real time model, DAC, ADC, DQ)
- Calibration (Sensors, DAC, ADC)
- Analysis code to calculate coupling function (peaks, comb, broad)
- Spectrogram tools
(Part of) to do list
- Obtain S/N on JGWdoc for all PEM related things, e.g. sensors, actuators, amplifiers, non-standard cables.
- Calibrate sensors and actuators.
- Consider how to calibrate them.
- Consider how many DAC, ADC, CH are required at each measurement point.
- Consider how many people are required.
- Make analysis codes
- Gather all required instruments listed in above tables.
Meetings