Differences between revisions 59 and 62 (spanning 3 versions)
⇤ ← Revision 59 as of 2019-12-10 12:59:49 →
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← Revision 62 as of 2019-12-10 13:59:27 → ⇥
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Editor: miyoki
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Deletions are marked like this. Additions are marked like this.
Line 13: Line 13:
 || Present(2)/Total(10) || Present(2)/Total(10) || Present(2)/Total(10) || Present(4)/Total(14) || Present(3)/Total(3) || <--- KOACH are not included ||  || Present(2)/Total(10) || Present(2)/Total(10) || Present(2)/Total(10+1) || Present(4)/Total(14) || Present(3)/Total(3) || <--- KOACH are not included ||
Line 20: Line 20:
   1.#2 Method(1)
    * Take a sensitivity by an operator.
    * 4 people stand by (MCE, IFI, PRM), (PR3, PR2, BS), (SR2, SR3), (SRM OMC) FFU switchs.
    * Turn off almost FFUs at the same time by 4 people, except for pink one.
    * Take the sensitivity again before alignment will change.
    * Check the difference btw FFU operation and almost no FFU operation. <<BR>>		    1.#2 '''For Corner station 1F'''
  1.#2 Method(1)
     * Take a sensitivity by an operator.
     * 5 people stand by (MCE, IFI, PRM), (PR3, PR2, BS), (SR2, SR3), (SRM OMC), and Pre-Room FFU switchs.
  * Turn off almost FFUs at the same time by 4 people, except for pink one.
     * Take the sensitivity again before alignment will change.
  * Check the difference btw FFU operation and almost no FFU operation. <<BR>>
Line 27: Line 28:
   * Method(2): If the alignment change is too huge for us to take a sensitivity.
    * We turn off IYC-C and BS-C coolers at the same time when we turn off 130 FFUs.
    * Take sensitivity uegently if possible.
    * Check the temp changes in the corner station.
    * If the temp seems to go down rapidly, we enlarge heating power. If the temp gose up rapidly, we turned on IYC-C again and heat up by heaters.
    * we expect do some try and error for several hours if we encounter serious temp change.
    * If alignment comes back, take sensitivity.
    * If it will take too much time to recover FPMI, we give up this trial.		   * Method(2): If the alignment change is too huge for us to take a sensitivity.
     * We turn off IYC-C and BS-C coolers at the same time when we turn off 130 FFUs.
     * Take sensitivity uegently if possible.
     * Check the temp changes in the corner station.
  * If the temp seems to go down rapidly, we enlarge heating power. If the temp gose up rapidly, we turned on IYC-C again and heat up by heaters.
     * we expect do some try and error for several hours if we encounter serious temp change.
  * If alignment comes back, take sensitivity.
  * If it will take too much time to recover FPMI, we give up this trial.

Plans for trial just after ER

  • Noise investigation about FFUs in the corner stations by an operator

    1. Preparation

      • Make marks on FFU switches that are not turned off in MCE, IFI, PRM, PR3, PR2, BS, SR2, SR3, SRM, OMC with "Pink Tape".
        (Operated FFU / Total FFU) table list is below.
        130 FFUs will be turned off. This corresponds to 26kW heating power.
        26kW corresponds to about two water cooler cooling power (2 x 14kW). We expect balance.

    Area Name

    MCF

    MCE

    IFI

    PRM

    PR3

    PR2

    BS

    SR2

    SR3

    SRM

    OMC

    Present (151)/Total(180)

    1/16

    2/16

    12/12

    12/12

    16/16

    20/20

    20/20

    20/20

    16/16

    16/16

    16/16

    several FFUs are disorder

    Remained in Test(35)/Total(180)

    1/16

    2/16

    2/12

    2/12

    4/16

    4/20

    4/20

    4/20

    4/16

    4/16

    4/16


  • IEXYV

    IEXYA

    IEXYC(1F)

    IEXYC(2F)

    EXYT

    Present(2)/Total(10)

    Present(2)/Total(10)

    Present(2)/Total(10+1)

    Present(4)/Total(14)

    Present(3)/Total(3)

    <--- KOACH are not included


  • Corner Station (1F)

    180+2x24+ 2x10 + 10(Pre-Rooms) = 258


  1. For Corner station 1F

    1. Method(1)
      • Take a sensitivity by an operator.
      • 5 people stand by (MCE, IFI, PRM), (PR3, PR2, BS), (SR2, SR3), (SRM OMC), and Pre-Room FFU switchs.
      • Turn off almost FFUs at the same time by 4 people, except for pink one.
      • Take the sensitivity again before alignment will change.

      • Check the difference btw FFU operation and almost no FFU operation.

    2. Method(2): If the alignment change is too huge for us to take a sensitivity.
      • We turn off IYC-C and BS-C coolers at the same time when we turn off 130 FFUs.
      • Take sensitivity uegently if possible.
      • Check the temp changes in the corner station.
      • If the temp seems to go down rapidly, we enlarge heating power. If the temp gose up rapidly, we turned on IYC-C again and heat up by heaters.
      • we expect do some try and error for several hours if we encounter serious temp change.
      • If alignment comes back, take sensitivity.
      • If it will take too much time to recover FPMI, we give up this trial.

KAGRA/EngineeringRun/ER191217_24/postERtrial (last edited 2020-01-05 17:30:32 by tatsuki.washimi)