Go to the Indico Home Page Oldest event Older event Up to category Newer event Newest event Printable version
  • Compact style
  • Indico style
  • Indico style - inline minutes
  • Indico style - numbered
  • Indico style - numbered + minutes
  • Indico Weeks View
    • Switch to the management area of this event
    Login

    IHEP MCBRD Project weekly meeting

    → Europe/Zurich
    Progress Report 12.6.pdf
    Progress Report 12.6.pptx
    Hide

    Week 49 - MCBRD IHEP Follow up meeting

    Presents : Yingzhe (IHEP), A Foussat , G. Kirby (CERN)

    Excused: Xu.G, H Felice, E Todesco

    Minutes meeting and actions item list :

    • Status of coils test:  
      • CB05 : The coil CB05 did not reach ultimate 530 A. It reaches 76 cumulated training quenches with a maximum current at 386 A. An He shortage caused an warm up to 103 K.   IHEP announced that IMP has other priorities of tests, therefore CB05 test campaign is interrupted. The coil is warmed up and will be shipped to IHEP test station.
      • CB06: the coil reach 316 A with 25 training quenches showing some little detraining and some flattop trend. Training test will continue at IHEP
      • CB04 waits at cold to be retested in training this week at IHEP
    • CERN commented that the number of training quenches remain too significant and the trend show some limitations. Further investigations must be done to check on the cause of poor observed training performance wrt fully VPI performing tested prototype coils (CERN, WST).
      • Quantified check of impregnation quality made by wet winding (ND and DT investigations)
      • Investigation of performance of a fully VPI impregnated wound coil made at BAMA ( to be discussed with CERN how to organise this VPI) base don the different WST strands from CERN SC strand.
    • Insulation level to ground:
      • It was confirmed that the insulation level found to GND on CB05 should be similar to CB04. Only the change of testing device would explain the difference with previous coils. To be checked on CB07, CB08

    Actions items:

    • Following finding from CB02 on impregnation quality issues, CERN asks than one of the worst perfoming coil between CB05 and CB06 should be checked against quality of impregnation and be shipped to CERN for some cut sections autopsy.
    • IHEP to discuss with CERN above suggested investigation plan of quality and performance checks
    • CERN ask to organise a formal review of the quality records and performances of the coils before deciding to put efforts in their assembly in magnet MCBRD02.
    • CERN ask IHEP to confirm what are the insertion gaps with the configuration of last coils (diameters measurement reported ) and nominal thickness of fiber glass tapes installed between formers, and to external tube
    There are minutes attached to this event. Show them.
    The agenda of this meeting is empty