Differences between revisions 1 and 33 (spanning 32 versions)
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Editor: miyoki
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Deletions are marked like this. Additions are marked like this.
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Optical Path from IMC to PRM Suspension Condition of PRM, IMMT1/2. (Takahashi-san, Ushiba-kun)
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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
      * Yaw Pico is at near the edge. --> Acceptable
     * https://klog.icrr.u-tokyo.ac.jp/osl/?r=29313
      * Though the EQ stop frame on the XY stage is unstable, the jump of the TM pitch is within the Oplev range. --> Acceptable
    * PRM
     * https://klog.icrr.u-tokyo.ac.jp/osl/?r=28380
      * The balance of the TM was recovered by regluing of three magnets.
      * The wire cramp on the IM for the TM was tightened.
      * Height adjustment.
     * https://klog.icrr.u-tokyo.ac.jp/osl/?r=28710
      * Position measurement of the traverser.
     * 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) ->
    *
   * Cable repair for the BF damper. The lead wires were glued to prevent direct touching of the wires to the coil bobbins.
    * https://klog.icrr.u-tokyo.ac.jp/osl/?r=28712
   * Fixing the cable connector for SF LVDT
    * https://klog.icrr.u-tokyo.ac.jp/osl/?r=28586
  * 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
Line 5: Line 38:
STM1/2
  * Mirror conditions(??)
  * Clean around the center?
   *
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Oplev Check for IMMT1. (Yokozawa-kun) Beam Path from IMC to PRM (Yokozawa-kun, and Akutsu-kun)
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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. --> https://gokagra.slack.com/archives/C015MC5U0R1/p1714622532391079 so OK.
 * 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 (April 17): Acceptable ?
 * https://klog.icrr.u-tokyo.ac.jp/osl/?r=29244 (April 16)
 * https://klog.icrr.u-tokyo.ac.jp/osl/?r=29228 (April 15)
 * https://klog.icrr.u-tokyo.ac.jp/osl/?r=29216 (April 12)
 * https://klog.icrr.u-tokyo.ac.jp/osl/?r=29202 (April 11)


----
Oplev Check for PRM, IMMT1. (Yokozawa-kun)
----

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
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 *0.7-0.8 mW input:  *
Line 25: Line 134:
PYL Separation(after pumping?)
 *
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Oplev table Covering Oplev table covering
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----------------------------------------------------------------
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(3)Mid-size Baffles (Akutsu-kun and his selected persons) ISS path
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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 Akutsu-kun
 * https://klog.icrr.u-tokyo.ac.jp/osl/?r=29384
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(4)Beam Path (Ushiba-kun, Tanaka-kun?, Hirose-san?) Vacuum system (Kimura/Uchiyama and their selected persons)
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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 157:
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 160:
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
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 *
Line 99: Line 166:
Top hat seal surface check for SRM/2/3 BS PRM/2/3. Check the opened flanges and the top hut of PRM
 *
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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
 * Careful cramp tightening near oplevs.
 *

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

IMMT1/2, PRM

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

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

Activities:

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

Beam dump(T.Akutsu)

PRM Cleaning (Hirata-san, Aso-kun)

PRM

Oplev Check for PRM, 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 Akutsu-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.

Decide where the elastomer/Metal gasket will be used.

Check the opened flanges and the top hut of PRM

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
  • Careful cramp tightening near oplevs.

KAGRA/Recovery2024/IFIPRM (last edited 2024-05-02 21:18:00 by miyoki)