Differences between revisions 2 and 16 (spanning 14 versions)
⇤ ← Revision 2 as of 2024-04-27 08:09:44 →
Size: 3337
Editor: miyoki
Comment:
← Revision 16 as of 2024-05-02 10:14:18 → ⇥
Size: 4291
Editor: miyoki
Comment:
Deletions are marked like this. Additions are marked like this.
Line 2: Line 2:
Optical Path from IMC to PRM (Yokozawa, and Akutsu) Suspension Condition of PRM, IMMT1/2. (Takahashi, Ushiba)
Line 4: Line 4:
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
   * IMMT1: https://klog.icrr.u-tokyo.ac.jp/osl/?r=29320
   * IMMT2: 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, and Akutsu)
----

Activities:
 * https://klog.icrr.u-tokyo.ac.jp/osl/?r=29261
 * https://klog.icrr.u-tokyo.ac.jp/osl/?r=29271
 * https://klog.icrr.u-tokyo.ac.jp/osl/?r=29273
 * https://klog.icrr.u-tokyo.ac.jp/osl/?r=29282
 * https://klog.icrr.u-tokyo.ac.jp/osl/?r=29283
 * https://klog.icrr.u-tokyo.ac.jp/osl/?r=29285
 * https://klog.icrr.u-tokyo.ac.jp/osl/?r=29299
 * https://klog.icrr.u-tokyo.ac.jp/osl/?r=29308
 * https://klog.icrr.u-tokyo.ac.jp/osl/?r=29334
 * https://klog.icrr.u-tokyo.ac.jp/osl/?r=29342
 * https://klog.icrr.u-tokyo.ac.jp/osl/?r=29343


IMC to STM1
 * Beam clearance: OK
Line 15: Line 65:
  * 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?
Line 18: Line 72:
 * Beam position on IMMT2  * Beam position on IMMT2: shifted from the center.
Line 28: Line 82:
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?
Line 30: Line 94:
Suspension Condition of IMMT1/2. (Takahashi, Ushiba) PRM Cleaning
Line 32: Line 96:
IMMT1
 * Mechanical
  * Mag-coil


IMMT2
 * 		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 45: 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 46: Line 114:
 *0.7-0.8 mW input:  *
Line 57: Line 125:
PYL Separation(after pumping?)
 *
Line 66: Line 131:
Oplev table Covering Oplev table covering
Line 70: Line 135:
----------------------------------------------------------------
Line 73: Line 136:
(3)Mid-size Baffles (Akutsu-kun and his selected persons) ISS path
Line 75: 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 84: Line 143:
(4)Beam Path (Ushiba-kun, Tanaka-kun?, Hirose-san?) Vacuum system (Kimura/Uchiyama and their selected persons)
Line 86: 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 89: 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 93: Line 151:

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.
 *
Line 127: Line 156:
 *
Line 128: Line 158:
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

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

IMMT1/2, PRM

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

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

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

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.

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

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