Agenda/Minutes

Zoom Meeting

CRY+VIS Interface Meeting

Date : 13:30-14:30

Participants : Takahashi, Hirata, Sato, Aso, Ushiba, Ikeda, Miyo, Akutsu, Kimura, Tomaru

Post O3 Upgrade portal

Schedule

IX: Oplev will be finalized in April. Height and alignment adjustments are planed on 4/7-8. ACC will be installed in April.
IY: Remedy of the pre-isolator is scheduled in April.
EX: Oplev setting is on going. Payload was released on 4/1. F0 was tuned.
EY: Installation of the tower will be restarted in May. Countermeasure for the contamination is scheduled on 4/5-6. Removing of the maraging rod is necessary.

Status

Corrugate tube fixing jig: They will be prepared by the end of May.
Commissioning in air: From mid. May for IX.
Commissioning in vacuum:
Acceptance check: Check items for in-air commissioning should be confirmed on the payload.
PF actuator: Not evaluated in IX, but after the commissioning for suspension.
Jig for FC painting:
Overall commissioning:
Procedure of TM height setting: More information on the range and limit is necessary to decide procedure. Prepare for the measurement in the first in-vacuum commissioning in IX.

Discussion

VIS Meeting

14:30-15:10

Participants: Takahashi, Fabian, Tanaka, Sugiyama, Terrence,Aso, Hirata, Sato, Miyo

Schedule

See Schedule

Type-A team: MCo 4/6, IXV 4/7-8
Type-B team: PR3 4/5-9

Milestone

IMC suspensions are ready in air [40] will finish 2011/04/21.
PRs are ready in air [643] will finish 2011/07/09.
ETMX is ready in air [656] will finish 2021/08/25.
ITMX is ready in air [657] will finish 2021/08/31.
ETMY is ready in air [658] will finish 2021/09/16.
ITMY is ready in air [659] will finish 2021/11/08.
BS is ready in air [691] will finish 2011/11/24.
SRs are ready in air [663] will finish 2011/12/20.
Output suspensions are ready in air [695] will finish 2011/12/21.
TMSY is ready in air [708] will finish 2011/??/??.
TMSX is ready in air [684] will finish 2011/??/??.

2021/03/29

Klog

16378 F0 tuning , ryutaro.takahashi

16276 Setup of F1 , ryutaro.takahashi
- 16336 Comment , naohisa.satou
- 16353 Comment , ryutaro.takahashi
- 16366 Comment , ryutaro.takahashi

General

16349 Some of the EPICS channels have been changed to science frames , satoru.ikeda
16356 Added EPICS channel for , satoru.ikeda
16362 Update matrices for oplev segments , kouseki.miyo

16365 Wiring the release sensor (outside the vacuum chamber) , naohisa.satou

PR3

16348 Tightening the locating clamps for the piano wire. , fabian.arellano
16310 Preparation for testing the procedure to glue the piano wire at the locating clamps in the IM. , fabian.arellano
- 16338 Comment , fabian.arellano
16348 Tightening the locating clamps for the piano wire. , fabian.arellano
- 16355 Comment , fabian.arellano
- 16363 Comment , fabian.arellano
- 16370 Comment , fabian.arellano
- 16373 Comment , fabian.arellano

This is generated by python script in /users/Miyo/dropbox/Script/scrapping/main.py.

Summary Report

TypeA

TypeB

TypeBp

I will explain using this short presentation about the adjustment of PR3 inner wire locating clamps.

TypeC

Electronics

Control

Safety

Discussion

Travel Plans

The week from 4/5

Takahashi: 4/5-8
Sato: 4/5-9
Hirata: 4/5-9

The week from 4/12

Takahashi: 4/12-16
Sato: 4/12-16
Hirata: 4/12-16

Next meeting

2021/4/9(FRI)

KAGRA/Subgroups/VIS/VISMinutes20210402 (last edited 2021-04-02 16:31:50 by RyutaroTakahashi)

-  ⇤ ← Revision 8 as of 2021-03-29 08:20:44 → 
  Size: 5535
  Editor: KousekiMiyo
  Comment:
+   ← Revision 23 as of 2021-04-02 16:31:50 → ⇥
  Size: 4968
  Editor: RyutaroTakahashi
  Comment:
-Deletions are marked like this.
+Additions are marked like this.
 Line 8:
-Date : 13:30-14:15
+Date : 13:30-14:30
 Line 10:
-Participants : Takahashi, Aso, Ikeda, Tomaru, Ushiba, Sato, Miyo
+Participants : Takahashi, Hirata, Sato, Aso, Ushiba, Ikeda, Miyo, Akutsu, Kimura, Tomaru
 Line 15:
- * IX: Oplev will be finalized in April. ACC installation will be started in April.
 * IY:
 * EX: Oplev setting is on going. The payload has been released?
 * EY: Installation of the F1 stage was almost finished. Countermeasure for the contamination is scheduled on 4/5-6. Removing of the maraging rod is necessary.
+ * IX: Oplev will be finalized in April. Height and alignment adjustments are planed on 4/7-8. ACC will be installed in April.
 * IY: Remedy of the pre-isolator is scheduled in April.
 * EX: Oplev setting is on going. Payload was released on 4/1. F0 was tuned.
 * EY: Installation of the tower will be restarted in May. Countermeasure for the contamination is scheduled on 4/5-6. Removing of the maraging rod is necessary.
 Line 24:
- * Acceptance check: Check items for in-air commissioning should be confirmed on the payload. Present status of EYV was shown.
+ * Acceptance check: Check items for in-air commissioning should be confirmed on the payload.
 Line 27:
- * Overall commissioning: Schedule meeting was held on 3/22.
+ * Overall commissioning:
 Line 32:
+= VIS Meeting =
14:30-15:10
-Line 33:
+Line 35:
-= VIS Meeting =
14:15-15:00

Participants: Takahashi, Fabian, Aso, Hirata, Miyo, Ishizaki, Tanaka, Sato, Sugiyama
+Participants: Takahashi, Fabian, Tanaka, Sugiyama, Terrence,Aso, Hirata, Sato, Miyo
-Line 41:
+Line 40:
+ * Type-A team: MCo 4/6, IXV 4/7-8
 * Type-B team: PR3 4/5-9
-Line 42:
+Line 44:
+ * ''IMC suspensions are ready in air [40]'' will finish 2011/04/21.
 * ''PRs are ready in air [643]'' will finish 2011/07/09.
-Line 46:
+Line 51:
- * ''PRs are ready in air [643]'' will finish 2011/07/09.
-Line 49:
+Line 53:
- * ''IMC suspensions are ready in air [40]'' will finish 2011/04/21.
-Line 54:
+Line 57:
+/03/29
-Line 55:
+Line 60:
+'''EX'''

 * (!) [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=16378|16378]] F0 tuning , __ryutaro.takahashi__
-Line 57:
+Line 65:
- * [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=16276|16276]] Setup of F1 ,  __ryutaro.takahashi__
+ * [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=16276|16276]] Setup of F1 ,  __ryutaro.takahashi__
-Line 59:
+Line 68:
+  * [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=16353|16353]] Comment ,  __ryutaro.takahashi__
  * [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=16366|16366]] Comment ,  __ryutaro.takahashi__

'''General'''

 * [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=16349|16349]] Some of the EPICS channels have been changed to science frames ,  __satoru.ikeda__
 * [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=16356|16356]] Added EPICS channel for  ,  __satoru.ikeda__
 * [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=16362|16362]] Update matrices for oplev segments ,  __kouseki.miyo__

'''IX'''

 * [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=16365|16365]] Wiring the release sensor (outside the vacuum chamber) ,  __naohisa.satou__
-Line 60:
+Line 82:
- * [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=16310|16310]] Preparation for testing the procedure to glue the piano wire at the locating clamps in the IM. ,  __fabian.arellano__
+ * [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=16348|16348]] Tightening the locating clamps for the piano wire. ,  __fabian.arellano__
 * [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=16310|16310]] Preparation for testing the procedure to glue the piano wire at the locating clamps in the IM. ,  __fabian.arellano__
-Line 62:
+Line 86:
+ * [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=16348|16348]] Tightening the locating clamps for the piano wire. ,  __fabian.arellano__
  * [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=16355|16355]] Comment ,  __fabian.arellano__
  * [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=16363|16363]] Comment ,  __fabian.arellano__
  * (!) [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=16370|16370]] Comment , __fabian.arellano__
  * (!) [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=16373|16373]] Comment , __fabian.arellano__
-Line 67:
+Line 96:
-EY cabling
 * According to the continuity check at F1, disconnection of the LVDT (actuator coil) of BF was found, but we have not been able to determine where the break occurred.
-Line 72:
+Line 97:
-=== TypeBp PR3 ===
This week we did two  tasks, both related with PR3 clamps:

 * We measured the gaps in PR3 locating clamps for the 200 um piano wire and
 * We tested applying adhesive to the wires within the grooves in the locating clamps.
 * One magnet from the IM OSEM flags was chipped. We need to get another one. See [[https://photos.app.goo.gl/3cu5TECSb8hXkkW56|this picture]].

Size of gaps

 * We used thickness gauges.
 * We measured the gaps in different places to take into account that the gaps are not necessarily uniform.
 * The largest gap size was between 170 um and 180 um.
 * The lowest one was between 70 um and 80 um.
 * The tickness of the clamped wire is 200 um.

Gluing test.

 * Using a spare SR style clamp we tested the procedure. Let's see klog [[https://klog.icrr.u-tokyo.ac.jp//?r=16331|16331]] and [[https://klog.icrr.u-tokyo.ac.jp//?r=16338|16338]] for details.
 * The  test was successful in the sense that the adhesive went into  the gap  and the grooves around the wires. However, I wonder if this  tiny amount  of glue would keep the wires in place.

Is there another option before deciding to hang the mirror again? Yes

 * During the gluing test we saw that the outer locating clamps was not badly scared, neither the tungsten wire. See pictures.
 * In order to access the screws of the inner locating clamps to tighten them we could do something like this:
  * Lock the payload, remove the IRM side panels (already done).
  * Remove the coils from the back ring of the RM in ordet to protect the magnet standoffs.
  * Release the mirror from the RM and withdraw the lower screws by more than a few milimeters.
  * Lift the RM by 3 mm using the screws from the security structure.
  * Loosen the outer locating clamps and move the wires out of the way just enough for the tool to reach the inner screw.
  * Tighten the inner screws with 2 Nm torque.
  * Put the tungsten wires back in the grooves and tighten the clamp again.
  * Lower the RM
  * Etc.
 * Washimi-san and I can do preparation on Monday and on Tuesday we can tighten the screws with Hirata-san.
+=== TypeBp ===
I will explain using [[https://1drv.ms/b/s!AoQaV1tdsEcUgeNmg0hHZMMSejqOdA?e=AI19Xb|this short presentation]] about the adjustment of PR3 inner wire locating clamps.
-Line 113:
+Line 106:
-The week from 3/29

 * Takahashi: 3/29-4/2
 * Sato: 3/29-4/2
 * Hirata: 3/29-4/2
 * Yano: 3/29-31
-Line 122:
+Line 108:
- * Takahashi: 4/5-9
+ * Takahashi: 4/5-8
-Line 126:
+Line 112:
+The week from 4/12

 * Takahashi: 4/12-16
 * Sato: 4/12-16
 * Hirata: 4/12-16
-Line 127:
+Line 119:
- * 2021/4/2(FRI)
+ * 2021/4/9(FRI)