Differences between revisions 6 and 31 (spanning 25 versions)
⇤ ← Revision 6 as of 2019-12-09 20:48:43 →
Size: 625
Editor: miyoki
Comment:
← Revision 31 as of 2019-12-09 21:15:44 → ⇥
Size: 1118
Editor: miyoki
Comment:
Deletions are marked like this. Additions are marked like this.
Line 3: Line 3:
 * 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>>		  * 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).
Line 7: Line 7:
 ||MCE || IFI || PRM || PR3 || PR2 || BS || SR2 || SR3 || SRM || OMC ||  || 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 ||
<<BR>>
   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>>
Line 9: Line 17:
   * 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. 		   * Method(2): If the alignment change is too huge for us to take a sensitivity.
    *

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).

    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(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.

  2. Method(2): If the alignment change is too huge for us to take a sensitivity.

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