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 * Noise investigation about FFUs in the corner stations
  * Method
   1. Make marks on FFU switches that are not turned off in MCE, IFI, PRM, PR3, PR2, BS, SR2, SR3, SRM, OMC with "Pink Tape".<<BR>> (Operated FFU / Total FFU) list is,<<BR>>
 || area name ||MCE || IFI || PRM || PR3 || PR2 || BS || SR2 || SR3 || SRM || OMC ||		  * 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".<<BR>> (Operated FFU / Total FFU) table list is below.<<BR>>130 FFUs will be turned off. This corresponds to 26kW heating power.<<BR>>26kW corresponds to about two water cooler cooling power (2 x 14kW).

  * 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.

 || Area Name ||MCE || IFI || PRM || PR3 || PR2 || BS || SR2 || SR3 || SRM || OMC ||
Line 8: Line 16:
<<BR>>
    1.#2 4 people stand by (MCE, IFI, PRM), (PR3, PR2, BS), (SR2, SR3), (SRM OMC) FFU switchs.
    * Keep taking sensitivity of FPMI condition by an operator.
    * Turn off almost FFUs at the same time by 4 people, except for pink one.
    * Check the difference btw FFU operation and alnost-no operation.
  1.#3 Method(2)

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).

    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.

    Area Name

    MCE

    IFI

    PRM

    PR3

    PR2

    BS

    SR2

    SR3

    SRM

    OMC

    Operation/Total

    2/16

    2/12

    2/12

    4/16

    4/20

    4/20

    4/20

    4/16

    4/16

    4/16

    1. Method(2)

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