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(2017/12/12 追記)
 * 持っている機器、買う必要がある機器の確認し、見積りを取る。-->長野
 * 大きい加振機の所在を麻生さんに確認。
 * 小さい加振機の検討。
  * 例えば、[[https://www.monotaro.com/g/02599650/]]とか、[[https://www.toyo.co.jp/mecha/products/detail/themodalshop-2002e.html#link3]]とか。
  * 必要ならRobertに聞いてみる。
 * アナログ回路(~10 kHzの早いインジェクション用)を作る。
 * 各エリアで確保できるデジタルのチャンネル数の確認。
 * 確保できるチャンネル数の中で、やること/できることを具体化する。
 * 山本さんにCALで似たようなコードを作ってないか確認する。
 * 解析コードを作る人手を確保。
 * 予行演習・本番測定の人手の確保。
 * センサー・アクチュエータ類のキャリブレーション。
 * CDSの差動入出力への対応。
 * 各実験エリア(特にエンド)でのグラウンドの確認。
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Next meeting is 2017/12/12 13:00--??? Next meeting is 2017/12/19 13:00--

PEM injection in bKAGRA phase1

(Description will be translated to English at some point)

Aims

In bKAGRA phase1,

  • Investigate the projection of the environmental noise effect to the sensitivity of KAGRA interferometer
  • Characterize the effect of the scattering light
  • Morphologically study the environmental noise waveform

(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)
  • TMS (both end)
  • 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

JGW S-number

Comment

Amplifier

1

QSC RMX5050a

No

No

Yes

N/A

Head set

several

Not known

Yes

No

No

N/A

Small accelerometer

several

KISTLER Accelerometer Type 8640A5

No

No

Yes

List,S1707218,7219,7221,7222

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

JGW S-number

Comment

Large speaker

2

JBL JRX212

No

No

Yes

N/A

URL

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

S1707526

Earplug

several

Not known

Yes

No

No

N/A

Rubber stack

8

Not known

Yes

No

No

N/A

(If possible. For example, KE-25 (Misumi).)

Horn

1

Not known

Yes

No

No

N/A

Magnetic injection

Items

Numbers

Part Number

To be ordered

Ordered

We have

JGW S-number

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 +amplifier

No

No

Yes

S1707535,7536,7537,7538,7539,S1707540(Amp)

URL (pdf)

Small magnetometer

2

Not known

Yes

No

No

N/A

(If possible)

Shaker injection

Items

Numbers

Part Number

To be ordered

Ordered

We have

JGW S-number

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

JGW S-number

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 to connect all instruments.
    • Differential input/output of CDS.
    • Ground problem.
  • Consider how many people are required.
  • Make analysis codes
  • Gather all required instruments listed in above tables.

(2017/12/12 追記)

  • 持っている機器、買う必要がある機器の確認し、見積りを取る。-->長野

  • 大きい加振機の所在を麻生さんに確認。
  • 小さい加振機の検討。
  • アナログ回路(~10 kHzの早いインジェクション用)を作る。
  • 各エリアで確保できるデジタルのチャンネル数の確認。
  • 確保できるチャンネル数の中で、やること/できることを具体化する。
  • 山本さんにCALで似たようなコードを作ってないか確認する。
  • 解析コードを作る人手を確保。
  • 予行演習・本番測定の人手の確保。
  • センサー・アクチュエータ類のキャリブレーション。
  • CDSの差動入出力への対応。
  • 各実験エリア(特にエンド)でのグラウンドの確認。

Meetings

Next meeting is 2017/12/19 13:00--

What has been done

KAGRA/Subgroups/DET/PEMinjection/bKAGRA-phase1 (last edited 2018-07-11 20:03:44 by KojiNagano)