Diff for "KAGRA/Recovery2024/IFIPRM"

Differences between revisions 1 and 20 (spanning 19 versions)

Suspension Condition of PRM, IMMT1/2. (Takahashi-san, Ushiba-kun)

IMMT1/2, PRM

Mechanical Motion
- Smooth pico motion and its default position
- Gaps between magnets and coils
- Gaps between EQ stoppers and mirrors -> confirmed less than 1mm.
  - IMMT1/2
    - https://klog.icrr.u-tokyo.ac.jp/osl/?r=29314
    - https://klog.icrr.u-tokyo.ac.jp/osl/?r=29313
  - PRM
    - https://klog.icrr.u-tokyo.ac.jp/osl/?r=28380
    - https://klog.icrr.u-tokyo.ac.jp/osl/?r=29366
Electrical wirings
- Coil resistances and inductances ->
- Isolation of Wiring from coils to flanges(pico and mag-coil) ->
- Fixing on tables is tight and reliable?
Smooth Mag-coil motion and balance and TFs
Spectrum

Mirror conditions(??)
- Clean around the center?

Beam Path from IMC to PRM (Yokozawa-kun, and Akutsu-kun)

Activities:

https://klog.icrr.u-tokyo.ac.jp/osl/?r=29261 (Finalization of IFI-IMM-PRM: Day 1 PM)
- https://klog.icrr.u-tokyo.ac.jp/osl/?r=29271 (Comment to Finalization of IFI-IMM-PRM: Day 1 PM)
https://klog.icrr.u-tokyo.ac.jp/osl/?r=29273 (Finalization of IFI-IMM-PRM: Day 2)
https://klog.icrr.u-tokyo.ac.jp/osl/?r=29282 (Finalization of IFI-IMM-PRM: Day 3 AM)
https://klog.icrr.u-tokyo.ac.jp/osl/?r=29283 (Finalization of IFI-IMM-PRM: Day 3 PM)
- https://klog.icrr.u-tokyo.ac.jp/osl/?r=29285 (Comment to Finalization of IFI-IMM-PRM: Day 3 PM)
https://klog.icrr.u-tokyo.ac.jp/osl/?r=29299 (Finalization of IFI-IMM-PRM: Day 4)
https://klog.icrr.u-tokyo.ac.jp/osl/?r=29308 (Finalization of IFI-IMM-PRM: Day 5)
https://klog.icrr.u-tokyo.ac.jp/osl/?r=29334 (Finalization of IFI-IMM-PRM: Day 6)
https://klog.icrr.u-tokyo.ac.jp/osl/?r=29342 (Finalization of IFI-IMM-PRM: Day 7-1)
https://klog.icrr.u-tokyo.ac.jp/osl/?r=29343 (Finalization of IFI-IMM-PRM: Day 7-2)

IMC to STM1

Beam clearance: OK

STM1/2

Mirror mount stability with cables
Beam positions on them
Trans beam from STM2

IFI to IMMT1

IFI injection: No clipping
Beam position on IMMT1
Trans beam of IMMT1
- No change to ISS path?
- ISS beam/CWP reflection beam extracting (??)
- the beam paths are clear?
- The beams hit around the center of windows?
- The reflected beams on the windows are dumped?

IMMT1-IMMT2

Beam clearance: no problem
Beam position on IMMT2: shifted from the center.

IMMT2-PRM

Main beam/misaligned beam clearances: no problem against the beam dumper
The misaligned beam position: hits on the dumper(?) and the temp enhancement was detected.

Around PRM

Beam position on PRM
IR beam in the midsize baffles(HR/AR side)

Main Beam Dumper

Thermometer works: https://klog.icrr.u-tokyo.ac.jp/osl/?r=29340
Visual Inspection: after the IR recovery.
Beam Clearance: OK with the main IR beam

Beam dump(T.Akutsu)

some shiny remnant: https://klog.icrr.u-tokyo.ac.jp/osl/?r=29343, https://klog.icrr.u-tokyo.ac.jp/osl/?r=29342
Beam dumps were additionally added?
- In basic, No. Relocation was done?

PRM Cleaning (Hirata-san, Aso-kun)

PRM

Oplev Check for IMMT1. (Yokozawa-kun)

Activities:

Beam Power

Beam Path Clearance

IMMT1

QPD centering

Calibration

Spectrum Health

Oplev beam's stray light influence

almost no light? as before.

Oplev table covering

we will do this after closing.

ISS path

Check the path by Miyakawa-kun

Vacuum system (Kimura/Uchiyama and their selected persons)

Close GV btw PRM and PR3 and stad bolt nut adjustment btw PRM and PR3

Clean inside as much as possible including the bellows duct with TMP

Check the flange seal surface condition where were opened.

KF400 flange with a Copperplate -> change with a curved flange: https://klog.icrr.u-tokyo.ac.jp/osl/?r=29377

Decide where the elastomer/Metal gasket will be used.

Logistic to reinstall the bellows duct with TMP.

Sawada-sana and Mirapro members call
If you use chain block, please be careful of its fixing

-  ⇤ ← Revision 1 as of 2024-04-27 07:59:10 → 
  Size: 2777
  Editor: miyoki
  Comment:
+   ← Revision 20 as of 2024-05-02 12:06:59 → ⇥
  Size: 4818
  Editor: miyoki
  Comment:
-Deletions are marked like this.
+Additions are marked like this.
 Line 2:
-Optical Path from IMC to PRM
+Suspension Condition of PRM, IMMT1/2. (Takahashi-san, Ushiba-kun)
----
IMMT1/2, PRM
  * Mechanical Motion
   * Smooth pico motion and its default position
   * Gaps between magnets and coils
   * Gaps between EQ stoppers and mirrors -> confirmed less than 1mm.
    * IMMT1/2 
     * https://klog.icrr.u-tokyo.ac.jp/osl/?r=29314
     * https://klog.icrr.u-tokyo.ac.jp/osl/?r=29313
    * PRM
     * https://klog.icrr.u-tokyo.ac.jp/osl/?r=28380
     * https://klog.icrr.u-tokyo.ac.jp/osl/?r=29366
  * Electrical wirings
   * Coil resistances and inductances -> 
    * 
   * Isolation of Wiring from coils to flanges(pico and mag-coil) -> 
    * 
   * Fixing on tables is tight and reliable? 
    *
  * Smooth Mag-coil motion and balance and TFs
  * Spectrum
   * IMMT2: https://klog.icrr.u-tokyo.ac.jp/osl/?r=29320
   * IMMT1: https://klog.icrr.u-tokyo.ac.jp/osl/?r=29319
   * PRM: https://klog.icrr.u-tokyo.ac.jp/osl/?r=29348
   * PRM: https://klog.icrr.u-tokyo.ac.jp/osl/?r=29349

 * Mirror conditions(??)
  * Clean around the center?
   * 


----
Beam Path from IMC to PRM (Yokozawa-kun, and Akutsu-kun)
-Line 5:
+Line 38:
+Activities:
 * https://klog.icrr.u-tokyo.ac.jp/osl/?r=29261 (Finalization of IFI-IMM-PRM: Day 1 PM)
  * https://klog.icrr.u-tokyo.ac.jp/osl/?r=29271 (Comment to Finalization of IFI-IMM-PRM: Day 1 PM)
 * https://klog.icrr.u-tokyo.ac.jp/osl/?r=29273 (Finalization of IFI-IMM-PRM: Day 2)
 * https://klog.icrr.u-tokyo.ac.jp/osl/?r=29282 (Finalization of IFI-IMM-PRM: Day 3 AM)
 * https://klog.icrr.u-tokyo.ac.jp/osl/?r=29283 (Finalization of IFI-IMM-PRM: Day 3 PM)
  * https://klog.icrr.u-tokyo.ac.jp/osl/?r=29285 (Comment to Finalization of IFI-IMM-PRM: Day 3 PM)
 * https://klog.icrr.u-tokyo.ac.jp/osl/?r=29299 (Finalization of IFI-IMM-PRM: Day 4)
 * https://klog.icrr.u-tokyo.ac.jp/osl/?r=29308 (Finalization of IFI-IMM-PRM: Day 5)
 * https://klog.icrr.u-tokyo.ac.jp/osl/?r=29334 (Finalization of IFI-IMM-PRM: Day 6)
 * https://klog.icrr.u-tokyo.ac.jp/osl/?r=29342 (Finalization of IFI-IMM-PRM: Day 7-1)
 * https://klog.icrr.u-tokyo.ac.jp/osl/?r=29343 (Finalization of IFI-IMM-PRM: Day 7-2)


IMC to STM1
 * Beam clearance: OK
-Line 6:
+Line 56:
+ * Mirror mount stability with cables
 * Beam positions on them
 * Trans beam from STM2
-Line 7:
+Line 60:
+IFI to IMMT1
 * IFI injection: No clipping
 * Beam position on IMMT1
 * Trans beam of IMMT1
  * No change to ISS path?
  * ISS beam/CWP reflection beam extracting (??)
  * the beam paths are clear?
  * The beams hit around the center of windows?
  * The reflected beams on the windows are dumped?
 
IMMT1-IMMT2
 * Beam clearance: no problem
 * Beam position on IMMT2: shifted from the center.

IMMT2-PRM
 * Main beam/misaligned beam clearances: no problem against the beam dumper
 * The misaligned beam position: hits on the dumper(?) and the temp enhancement was detected.

Around PRM
 * Beam position on PRM
 * IR beam in the midsize baffles(HR/AR side)

Main Beam Dumper 
 * Thermometer works: https://klog.icrr.u-tokyo.ac.jp/osl/?r=29340
 * Visual Inspection: after the IR recovery.
 * Beam Clearance: OK with the main IR beam


Beam dump(T.Akutsu)
  * some shiny remnant: https://klog.icrr.u-tokyo.ac.jp/osl/?r=29343, https://klog.icrr.u-tokyo.ac.jp/osl/?r=29342
  * Beam dumps were additionally added?
   * In basic, No. Relocation was done?

----
PRM Cleaning (Hirata-san, Aso-kun)
----
PRM
 * https://klog.icrr.u-tokyo.ac.jp/osl/?r=29254
 * https://klog.icrr.u-tokyo.ac.jp/osl/?r=29244
 * https://klog.icrr.u-tokyo.ac.jp/osl/?r=29228
 * https://klog.icrr.u-tokyo.ac.jp/osl/?r=29216
 * https://klog.icrr.u-tokyo.ac.jp/osl/?r=29202
-Line 13:
+Line 108:
+Activities:
 * https://klog.icrr.u-tokyo.ac.jp/osl/?r=29337
 * https://klog.icrr.u-tokyo.ac.jp/osl/?r=28916
 * https://klog.icrr.u-tokyo.ac.jp/osl/?r=28897
-Line 14:
+Line 114:
- *0.7-0.8 mW input:
+ *
-Line 25:
+Line 125:
-PYL Separation(after pumping?)
 *
-Line 34:
+Line 131:
-Oplev table Covering
+Oplev table covering
-Line 38:
+Line 135:
-----------------------------------------------------------------
-Line 41:
+Line 136:
-(3)Mid-size Baffles (Akutsu-kun and his selected persons)
+ISS path
-Line 43:
+Line 138:
-Done on 22nd August.

Approved all processes of setting the mid-size baffles.

(SR3 oplev path is pointed out to be near the structure.)
+Check the path by Miyakawa-kun
 *??
-Line 52:
+Line 143:
-(4)Beam Path (Ushiba-kun, Tanaka-kun?, Hirose-san?)
+Vacuum system (Kimura/Uchiyama and their selected persons)
-Line 54:
+Line 145:
-Main beam
- IR beam hit and through around the center (or acceptable area) of optics from inside IFI tank -> SRM.
+Close GV btw PRM and PR3 and stad bolt nut adjustment btw PRM and PR3
 *
-Line 57:
+Line 148:
-GR beam
- GR beam hit and through around the center (or acceptable area) of optics?
  (assuming GR beam on POP/POS also pass through around the center (or acceptable area) of optics)
+Clean inside as much as possible including the bellows duct with TMP
 *
-Line 61:
+Line 151:
-IR from the misaligned PRM
- Does it hit on the Dumper?
- The misaligned position repeatability is good or well controlled by oplev/something?

Relative positions btw Mid-size baffles and IR/GR.


AR-SRM reflection beam control
- Where is the reflected beam from SRM? When misaligned, should it hit the mid-size baffle on SR2 or other? Should we make it possible to align SRM even if it has less reflectivity for RSE?


----
(5)IFI-IMMT tank
----
Stray light mitigation(Akutus-kun and selected persons)
- The predicted stray beams are dumped?
- Is there any missing stray beam paths?

ISS beam/CWP reflection beam extracting (??)
- the beam paths are clear?
- The beams hit around the center of windows?
- The reflected beams on the windows are dumped?

(The IFI new poles seem to be dangerous due to the vibration made by drilling.)

Beam dumper(Akutsu-kun and selected pesrons)
- Does the thermometer works?


----
(6)Vacuum system (Kimura-san / Uchiyama-kun and their selected persons)
----
Numbering for all ports.

Check the flange seal surface condition.
+Check the flange seal surface condition where were opened.
 * KF400 flange with a Copperplate -> change with a curved flange: https://klog.icrr.u-tokyo.ac.jp/osl/?r=29377
-Line 98:
+Line 155:
+ *
-Line 99:
+Line 157:
-Top hat seal surface check for SRM/2/3 BS PRM/2/3.

ICF152 flange preparation for the new reducer flanges at SRM/PRM.

Check dust/fungus in stocked tubes/bellows.



----
(7)Cleanness of Mirrors HR/AR
----
FC was done for all mirrors' HR/AR, except for OMC Typ-C mirrors.

Check the surfaces and inside again before closing, and blow/absorb as much as possible if you find anything.


----
(8)Vacuum tank cleaning
----
In Basic, the cleaning was done after FC.
Check inside again and clean just before closing if you find something.
+Logistic to reinstall the bellows duct with TMP.
 * Sawada-sana and Mirapro members call
 * If you use chain block, please be careful of its fixing