Differences between revisions 35 and 59 (spanning 24 versions)

KAGRA VIS Operations Manual - LVDT

Contents

KAGRA VIS Operations Manual - LVDT
1. LVDT Coil and Driver Data
2. Type Bp Data
Stocktake
1. List of LVDT Driver Boxes
2. LVDT cards

LVDTs are used for vertical sensing and actuation in all the GAS filters and for horizontal sensing and actuation in all the IP stages.

See LVDT Signal Conditioning for useful background on LVDT demodulation.

See JGW-T1201255 for description of the Nikhef-supplied cards, and JGW-T1604798 for more information on how to tune the demodulation circuit.

LVDT Calibration Procedure: JGW-E1707287 or LVDT Calibration Procedure.

LVDT Coil and Driver Data

Type A	Test Mass Suspensions
Type B	BS and SR suspensions
BS Data
SR2 Data
SR3 Data
SRM Data
Type Bp	PR Suspensions
Type C	Modecleaner Suspensions

Yoke Height Settings

The yoke should be set so that the double and single LVDT coils are symmetrically aligned when the keystone is at nominal height. It is convenient to set this in terms of the amount the PEEK coil former sticks out above the filter baseplate.

Bottom Filter (BS and SRx)

Note that the CAD is wrong for the bottom filter yoke:

Standard Filter (BS and SRx)

Top Filter (BS and SRx)

Summary

GAS Filter	Yoke Height	Keystone Height
BS BF	3.5 mm	65.5 mm (up from baseplate)
SR BF	3.5 mm	65.5 mm (up from baseplate)
BS SF	6 mm	65.5 mm (up from baseplate)
SR SF	6 mm	65.5 mm (up from baseplate)
BS F0	36 mm	153 mm (up from top plate), 16.5 mm (down from ring)
SR F0	34 mm	151 mm (up from top plate), 16.5 mm (down from ring)

Type Bp Data

Your data here!

Stocktake

Old: LVDT Stocktake as of 2018-04-13

List of LVDT Driver Boxes

LVDT Driver Module Top Assembly

Currently used drivers

Type-A

Suspension	Rack	S-Number	Note
ETMX		S140????	LVDT 1
ETMX		S140????	LVDT 2
ETMY		S140????	LVDT 1
ETMY		S140????	LVDT 2
ITMX		S140????	LVDT 1
ITMX		S140????	LVDT 2
ITMY		S140????	LVDT 1
ITMY		S140????	LVDT 2

Type-B

Suspension	Rack	S-Number	Note
BS		S140????
SRM		S140????
SR2		S140????
SR3		S140????

Type-Bp

Suspension	Rack	S-Number	Note
PRM		S140????
PRM		S140????
PR2	PR2	S1403047	For GAS filters ?
PR2	PR2	S1403050	For BF damper ?
PR3		S140????
PR3		S140????

AOS

Suspension	Rack	S-Number	Note
ETMX TMS		S140????
ETMY TMS		S140????

Drivers in stock

Location	S-Number	Note
Electric shop	S1407792	To be used for ???. OSC circuit is not installed

Broken

Location	S-Number	Note
Electric shop	S1407786

LVDT cards

Number of Input Cards in stock: ??
Number of broken input cards (taken out of the driver chasis): ??
Number of Mainboards in stock: ??
Number of broken Mainboards: ??

KAGRA/Subgroups/VIS/OpsManual/LVDT (last edited 2018-09-14 17:27:24 by YoichiAso)

-  ⇤ ← Revision 35 as of 2018-06-28 12:05:49 → 
  Size: 8176
  Editor: MarkBarton
  Comment:
+   ← Revision 59 as of 2018-09-14 17:27:24 → ⇥
  Size: 5955
  Editor: YoichiAso
  Comment:
-Deletions are marked like this.
+Additions are marked like this.
 Line 2:
+<<TableOfContents(3)>>
-Line 11:
+Line 12:
-||[[KAGRA/Subgroups/VIS/TypeA|Type A]]||Test Mass Suspensions||
||[[KAGRA/Subgroups/VIS/TypeB|Type B]]||BS and SR suspensions ||
||||[[KAGRA/Subgroups/VIS/OpsManual/TypeB/BSData#LVDT|BS Data]]||
||||[[KAGRA/Subgroups/VIS/TypeB/SR2Data#LVDT|SR2 Data]]||
||||[[KAGRA/Subgroups/VIS/TypeB/SR3Data#LVDT|SR3 Data]]||
||||[[KAGRA/Subgroups/VIS/TypeB/SRMData#LVDT|SRM Data]]||
||[[KAGRA/Subgroups/VIS/TypeBp|Type Bp]]||PR Suspensions||
||[[KAGRA/Subgroups/VIS/TypeC|Type C]]||Modecleaner Suspensions||

== Type A ==
Your data here!

== Type B Data ==
=== LVDT Drivers Data ===

For SR2:

||LVDT Driver S.N. ||Left card ||Stage ||Resistor value [ohm] ||Reference Signal || Gain  ||Right card ||Stage ||Resistor value [ohm] ||Reference Signal || Gain  ||
||<|4> SR2: SN 7777777 ||R0 ||BF GAS ||59.2 ||4. Vpp || 4./5.02 = 0. ||R0 ||PI LVDT#1 ||50.1 || 4. Vpp || 4./5.02 = 0. ||
||R1 ||SF GAS ||36.3 ||4. Vpp || 4./5.02 = 0. ||R1 ||PI LVDT#2 ||50.6 ||4. Vpp || 4./5.02 = 0. ||
||R2 ||F0 GAS ||59.6 ||4. Vpp || 4./5.02 = 0. ||R2 ||PI LVDT#3 ||51.2 ||4. Vpp || 4./5.02 = 0. ||
||R3 ||Not used ||59.5 ||4. Vpp || 4./5.02 = 0. ||R3 ||Not used ||50.0 ||4. Vpp || 4./5.02 = 0. ||

For SR3:

||LVDT Driver S.N. ||Left card ||Stage ||Resistor value [ohm] ||Reference Signal || Gain  ||Right card ||Stage ||Resistor value [ohm] ||Reference Signal || Gain  ||
||<|4> SR3: SN 1807783 ||R0 ||BF GAS ||60.0 ||4.90 Vpp || 4.90/5.02 = 0.976 ||R0 ||PI LVDT#1 ||50.7 || 4.90Vpp || 4.90/5.02 = 0.976 ||
||R1 ||SF GAS ||60.7 ||4.86 Vpp || 4.86/5.02 = 0.968 ||R1 ||PI LVDT#2 ||50.7 ||4.88 Vpp || 4.88/5.02 = 0.972 ||
||R2 ||F0 GAS ||60.9 ||4.86 Vpp || 4.86/5.02 = 0.968 ||R2 ||PI LVDT#3 ||50.0 ||4.88 Vpp || 4.88/5.02 = 0.972 ||
||R3 ||Not used ||60.7 ||4.86 Vpp || 4.86/5.02 = 0.968 ||R3 ||Not used ||50.9 ||4.86 Vpp || 4.86/5.02 = 0.968 ||

For SRM:

||LVDT Driver S.N. ||Left card ||Stage ||Resistor value [ohm] ||Reference Signal || Gain  ||Right card ||Stage ||Resistor value [ohm] ||Reference Signal || Gain  ||
||<|4> SRM: SN 1807786 ||R0 ||BF GAS ||60.6 ||5.04 Vpp || 5.04/5.04 = 1.0 ||R0 ||PI LVDT#1 ||50.0 || 5.0 Vpp || 5.0/5.04 = 0.992 ||
||R1 ||SF GAS ||60.1 ||4.96 Vpp || 4.96/5.04 = 0.984 ||R1 ||PI LVDT#2 ||50.0 ||4.92 Vpp || 4.92/5.04 = 0.976 ||
||R2 ||F0 GAS ||60.7 ||4.96 Vpp || 4.96/5.04 = 0.984 ||R2 ||PI LVDT#3 ||50.5 ||4. Vpp || 5.0/5.04 = 0.992 ||
||R3 ||Not used ||61.2 ||4.94 Vpp || 4.94/5.04 = 0.98 ||R3 ||Not used ||50.8 ||4. Vpp || 4.9/5.04 = 0.972 ||

New box for SRM. Adjusting the potentiometers to have the same values:

||LVDT Driver S.N. ||Left card ||Stage ||Resistor value [ohm] ||Reference Signal || Gain  ||Right card ||Stage ||Resistor value [ohm] ||Reference Signal || Gain  ||
||<|4> SRM: SN 1403020 ||R0 ||BF GAS ||60.2 || - Vpp || - = - ||R0 ||PI LVDT#1 ||50.4 || - Vpp || - = - ||
||R1 ||SF GAS ||60.1 || - Vpp || - = - ||R1 ||PI LVDT#2 ||50.3 ||- Vpp || - = - ||
||R2 ||F0 GAS ||60.7 || - Vpp || - = - ||R2 ||PI LVDT#3 ||50.3 ||- Vpp || - = - ||
||R3 ||Not used ||61.0 || - Vpp || - = - ||R3 ||Not used ||50.2 ||- Vpp || - = - ||
+||[[KAGRA/Subgroups/VIS/OpsManual/TypeA|Type A]]||Test Mass Suspensions||
||[[KAGRA/Subgroups/VIS/OpsManual/TypeB|Type B]]||BS and SR suspensions ||
||||[[KAGRA/Subgroups/VIS/OpsManual/TypeB/BSData#lvdt|BS Data]]||
||||[[KAGRA/Subgroups/VIS/OpsManual/TypeB/SR2Data#lvdt |SR2 Data]]||
||||[[KAGRA/Subgroups/VIS/OpsManual/TypeB/SR3Data#lvdt |SR3 Data]]||
||||[[KAGRA/Subgroups/VIS/OpsManual/TypeB/SRMData#lvdt |SRM Data]]||
||[[KAGRA/Subgroups/VIS/OpsManual/TypeBp|Type Bp]]||PR Suspensions||
||[[KAGRA/Subgroups/VIS/OpsManual/TypeC|Type C]]||Modecleaner Suspensions||
-Line 94:
+Line 55:
-LVDT Stocktake as at 2018-04-13
+[[LVDT20180413|Old: LVDT Stocktake as of 2018-04-13]]
-Line 96:
+Line 57:
-See [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=2826|JGW-D1402826-v2: LVDT Driver Module Top Assembly]].
+== List of LVDT Driver Boxes ==
[[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=2826|LVDT Driver Module Top Assembly]]
-Line 98:
+Line 60:
-* = sighted recently
+=== Currently used drivers ===
-Line 100:
+Line 62:
-== Faulty (3) ==
 * S1807786*: 2018-04-11 Found to be faulty - returned to Mozumi by Enzo
 * S1807785*: Failed during measurement 2019/2/20
 * S1403130: Both of them are in a bad condition. The S number of the Input LVDT Card is shown below. // S1403106 // S1403161  // (2017/07/21 AEL)
+==== Type-A ====
||Suspension||Rack||S-Number||Note||
||ETMX || ||[[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=????|S140????]]||LVDT 1||
||ETMX || ||[[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=????|S140????]]||LVDT 2||
||ETMY || ||[[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=????|S140????]]||LVDT 1||
||ETMY || ||[[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=????|S140????]]||LVDT 2||
||ITMX || ||[[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=????|S140????]]||LVDT 1||
||ITMX || ||[[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=????|S140????]]||LVDT 2||
||ITMY || ||[[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=????|S140????]]||LVDT 1||
||ITMY || ||[[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=????|S140????]]||LVDT 2||
-Line 105:
+Line 73:
-== In use, presumably OK (14) ==
 * S1807787: 2018/4/4: Moved to NAOJ for TMS by Miyakawa, Akutsu
 * S1807783: 2018-03-12 Moved to SR3 rack area for SR3/SRM by Mark, Enzo
 * S1807784: Installed to IXV. 2018/2/14
 * S1403137: [2017/09/29] Installed into K1EX2 rack by K. Okutomi
 * S1403049: [2017/07/25] Installed into K1EX2 rack by K. Okutomi
 * S1403048: Installed into EY2 rack by K. Okutomi, June 9, 2017 // We replaced the front panel with that of Ver. 2.(EY1 Rack) 2017/07/13 AEL
 * S1403047: Moved to PR2 rack (June 2017) // We replaced the front panel with that of Ver. 2.(PR2 Rack) 2017/07/06 AEL
 * S1403133: Installed for PR3 BF LVDTs (Feb 2017) // We replaced the front panel with that of Ver. 2.(PR0 Rack) 2017/07/06 AEL
 * S1403046: We replaced the front panel with that of Ver. 2.(EY1 Rack) 2017/07/13 AEL
 * S1403131: We replaced the front panel with that of Ver. 2.(PR0 Rack) 2017/07/06 AEL
 * S1403050: We replaced the front panel with that of Ver. 2.(PR2 Rack) 2017/07/06 AEL
 * S1403044: 2017-11-16 SR3 rack was reassigned as SR2 by Mark, Miyakawa. Chassis was confirmed to be inside.
 * S1403052: Brought into the tunnel (PR3) on November 19, 2015 // We replaced the front panel with that of Ver. 2.(BS Rack) 2017/07/06 AEL ????
 * S1403136: We replaced the front panel with that of Ver. 2.(PR0 Rack) 2017/07/06 AEL
+==== Type-B ====
||Suspension||Rack||S-Number||Note||
||BS || ||[[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=????|S140????]]|| ||
||SRM || ||[[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=????|S140????]]|| ||
||SR2 || ||[[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=????|S140????]]|| ||
||SR3 || ||[[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=????|S140????]]|| ||
==== Type-Bp ====
||Suspension||Rack||S-Number||Note||
||PRM || ||[[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=????|S140????]]|| ||
||PRM || ||[[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=????|S140????]]|| ||
||PR2 ||PR2||[[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=3047|S1403047]]||For GAS filters ?||
||PR2 ||PR2||[[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=3050|S1403050]]||For BF damper ?||
||PR3 || ||[[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=????|S140????]]|| ||
||PR3 || ||[[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=????|S140????]]|| ||
==== AOS ====
||Suspension||Rack||S-Number||Note||
||ETMX TMS|| ||[[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=????|S140????]]|| ||
||ETMY TMS|| ||[[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=????|S140????]]|| ||
-Line 121:
+Line 92:
-== In use, needs new front panel (1) ==
 * S1403020: 2018-04-12 Installed in SRM to replace faulty 7786 by Enzo. (Still has old-style panel.)
+=== Drivers in stock ===
||Location||S-Number||Note||
||Electric shop||[[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=7792|S1407792]]||To be used for ???. OSC circuit is not installed||
-Line 124:
+Line 96:
-== In circuit room (11) ==
 * S1403132*: We replaced the front panel with that of Ver. 2. 2017/07/10 AEL (Keep in circuit room after replacement)
 * S1403134*:  We replaced the front panel with that of Ver. 2. (2017/07/27 AEL)
 * S1403051*: We replaced the front panel with that of Ver. 2. 2017/07/10 AEL
 * S1403045: We replaced the front panel with that of Ver. 2. 2017/07/10 AEL
 * S1403139*: We replaced the front panel with that of Ver. 2. 2017/07/10 AEL
 * S1403138*: We replaced the front panel with that of Ver. 2. 2017/07/10 AEL
 * S1807792: Assembled in Kamioka (OSC circuit is not installed). 2018/2/9
 * S1807791: Assembled in Kamioka (OSC circuit is not installed). 2018/2/9
 * S1807790: Assembled in Kamioka (OSC circuit is not installed). 2018/2/9
 * S1807789: Assembled in Kamioka (OSC circuit is not installed). 2018/2/9
 * S1807788: Assembled in Kamioka (OSC circuit is not installed). 2018/2/9
+=== Broken ===
||Location||S-Number||Note||
||Electric shop||[[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=7786|S1407786]]||||
-Line 137:
+Line 100:
-== In circuit room, needs new front panel (1) ==
 * S1403135: It needs to be replaced with a panel of Ver. 2.(2017/07/18 AEL)
+== LVDT cards ==
 * Number of Input Cards in stock: ??
 * Number of broken input cards (taken out of the driver chasis): ??
 * Number of Mainboards in stock: ??
 * Number of broken Mainboards: ??