5680
Comment:
|
5752
|
Deletions are marked like this. | Additions are marked like this. |
Line 2: | Line 2: |
<<TableOfContents(3)>> | |
Line 54: | Line 55: |
[[Old: LVDT Stocktake as at 2018-04-13|LVDT20180413]] | [[LVDT20180413|Old: LVDT Stocktake as of 2018-04-13]] |
Line 56: | 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 58: | Line 60: |
* = sighted recently | === Currently used drivers === |
Line 60: | 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 65: | 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 81: | 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 84: | 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 == In circuit room, needs new front panel (1) == * S1403135: It needs to be replaced with a panel of Ver. 2.(2017/07/18 AEL) |
=== Broken === ||Location||S-Number||Note|| ||Electric shop||[[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=7786|S1407786]]|||| |
KAGRA VIS Operations Manual - LVDT
Contents
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
Test Mass Suspensions |
|
BS and SR suspensions |
|
PR Suspensions |
|
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 |
|
LVDT 1 |
|
ETMX |
|
LVDT 2 |
|
ETMY |
|
LVDT 1 |
|
ETMY |
|
LVDT 2 |
|
ITMX |
|
LVDT 1 |
|
ITMX |
|
LVDT 2 |
|
ITMY |
|
LVDT 1 |
|
ITMY |
|
LVDT 2 |
Type-B
Type-Bp
Suspension |
Rack |
S-Number |
Note |
PRM |
|
|
|
PRM |
|
|
|
PR2 |
PR2 |
For GAS filters ? |
|
PR2 |
PR2 |
For BF damper ? |
|
PR3 |
|
|
|
PR3 |
|
|
AOS
Drivers in stock
Location |
S-Number |
Note |
Electric shop |
To be used for ???. OSC circuit is not installed |
Broken
Location |
S-Number |
Note |
Electric shop |