Differences between revisions 2 and 10 (spanning 8 versions)

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.
- RF modulation sideband frequency list

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	Comment
Amplifier	1	Not known	No	No	Yes
Head set	several	Not known	Yes	No	No
Small accelerometer	a few	Not known	No	No	Yes?
Clay(?) to fix accelerometer	a few	Not known	No	No	Yes?
Cables and connectors	many	Not known	Yes?	No	No?
Low noise filter	1	Not known	Yes	No	No	Like SR560. Hand made?
Function generator	1	Not known	No?	No	Yes?

Acoustic injection

Items	Numbers	Part Number	To be ordered	Ordered	We have	Comment
Large speaker	2	Not known	No	No	Yes
Small speaker (PZT)	1	Not known	Yes	No	No	(If possible)
Microphone	2	Not known	No	No	Yes
Seismometer	1	Not known	No	No	Yes
Earplug	several	Not known	Yes	No	No
Rubber stack	8	Not known	Yes	No	No	(If possible)
Horn	1	Not known	Yes	No	No

Magnetic injection

Items	Numbers	Part Number	To be ordered	Ordered	We have	Comment
Large Coil	2	Not known	Yes	No	No	a few Ohms, ~1 m dia.
Small Coil	1	Not known	Yes	No	No	(If possible)
Magnetometer	2	Not known	No?	No	Yes?
Small magnetometer	2	Not known	Yes	No	No	(If possible)

Shaker injection

Items	Numbers	Part Number	To be ordered	Ordered	We have	Comment
Large Magnet coil shaker	1	Not known	No	No	Yes	NAOJ
Small PZT shaker	a few	Not known	Yes	No	No
Mallet	1	Not known	Yes	No	No

Others

Items	Numbers	Part Number	To be ordered	Ordered	We have	Comment
RF antenna	2	Not known	Yes	No	No	Could be made ourselves?
RF signal amplifier	2	Not known	Yes	No	No	Could be made ourselves?
RF generator	1	Not known	Yes	No	No	(If possible. Can Moku:Lab be used?)
RF spectrum analyzer	1	Not known	No	No	Yes	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.

Meetings

2017/12/06 Kick-off meeting

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

-  ⇤ ← Revision 2 as of 2017-12-07 15:25:05 → 
  Size: 1483
  Editor: KojiNagano
  Comment:
+   ← Revision 10 as of 2017-12-08 13:29:47 → ⇥
  Size: 4156
  Editor: KojiNagano
  Comment:
-Deletions are marked like this.
+Additions are marked like this.
 Line 27:
+ * RF noise measurement around RF modulation sideband frequencies.
  * [[http://gwwiki.icrr.u-tokyo.ac.jp/JGWwiki/MIFIOOInterfaces|RF modulation sideband frequency list]]
-Line 41:
+Line 43:
+ * 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
-Line 42:
+Line 47:
-Before bKAGRA phase1 run (Detailed date has not been fixed): Preparation
+== Sensors and instruments information ==
=== Common ===
||Items||Numbers||Part Number||To be ordered||Ordered||We have||Comment ||
||Amplifier||1|| Not known||No||No||Yes||  ||
||Head set||several|| Not known||Yes||No||No||  ||
||Small accelerometer ||a few|| Not known||No||No||Yes?||  ||
||Clay(?) to fix accelerometer ||a few|| Not known||No||No||Yes?||  ||
||Cables and connectors||many|| Not known||Yes?||No||No?||  ||
||Low noise filter||1|| Not known||Yes||No||No||Like SR560. Hand made? ||
||Function generator ||1|| Not known||No?||No||Yes?||  ||
-Line 44:
+Line 58:
-After bKAGRA phase1 run (Detailed date has not been fixed): Injection test in tunnel
-Line 46:
+Line 59:
-After injection test: Analysis, make report, (if possible) write paper
+=== Acoustic injection ===
||Items||Numbers||Part Number||To be ordered||Ordered||We have||Comment ||
||Large speaker||2|| Not known||No||No||Yes||  ||
||Small speaker (PZT)||1|| Not known||Yes||No||No||(If possible)   ||
||Microphone||2|| Not known||No||No||Yes||  ||
||Seismometer ||1|| Not known||No||No||Yes||  ||
||Earplug ||several|| Not known||Yes||No||No||  ||
||Rubber stack ||8|| Not known||Yes||No||No||(If possible) ||
||Horn ||1|| Not known||Yes||No||No|| ||
-Line 48:
+Line 69:
-== Sensors information ==
+=== Magnetic injection ===
||Items||Numbers||Part Number||To be ordered||Ordered||We have||Comment ||
||Large Coil||2|| Not known||Yes||No||No||a few Ohms, ~1 m dia. ||
||Small Coil||1|| Not known||Yes||No||No||(If possible) ||
||Magnetometer ||2|| Not known||No?||No||Yes?|| ||
||Small magnetometer ||2|| Not known||Yes||No||No||(If possible) ||
-Line 50:
+Line 76:
-== Meeting ==
 [[http://gwwiki.icrr.u-tokyo.ac.jp/JGWwiki/KAGRA/Subgroups/DET/PEMinjection/bKAGRA-phase1/meeting_20171206|Kick-off meeting (2017/12/06)]]
+=== Shaker injection ===
||Items||Numbers||Part Number||To be ordered||Ordered||We have||Comment ||
||Large Magnet coil shaker||1|| Not known||No||No||Yes||NAOJ ||
||Small PZT shaker||a few|| Not known||Yes||No||No|| ||
||Mallet||1|| Not known||Yes||No||No|| ||

=== Others ===
||Items||Numbers||Part Number||To be ordered||Ordered||We have||Comment ||
||RF antenna||2|| Not known||Yes||No||No||Could be made ourselves? ||
||RF signal amplifier ||2|| Not known||Yes||No||No||Could be made ourselves? ||
||RF generator ||1|| Not known||Yes||No||No||(If possible. Can Moku:Lab be used?) ||
||RF spectrum analyzer ||1|| Not known||No||No||Yes||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.

== Meetings ==
 [[http://gwwiki.icrr.u-tokyo.ac.jp/JGWwiki/KAGRA/Subgroups/DET/PEMinjection/bKAGRA-phase1/meeting_20171206|2017/12/06 Kick-off meeting]]