IHEP MCBRD Project weekly update ( slides only)

Tuesday 19 Oct 2021, 14:00 → 16:00 Europe/Zurich

Status for Each Aperture 10.18.pdf

Status for Each Aperture 10.18.pptx

The Electrical test instructions for series magnet 01_AP2-af commented.docx

The Electrical test instructions for series magnet 01_AP2-af commented.pdf

Week 41 - MCBRD meeting

Presents : Yingzhe (IHEP), A Foussat , A Musso (CERN)

Minutes meeting and actions item list :

• 1- There is no progress at IMP on coils testing as cold test is performed on other projects equipments
  • The status table of coils production shall be sent for our weekly information, even if no changes. See template attached that CERN would like to receive with both the Asset numbers and Bama MCBRD apertures naming. Please return to CERN with all Aperture under manufacture Any comments, notes can be added, Lorcan will maintain the file on line.

 

• 2- CERN took note that the factory at bama has moved to new site a few kms away of previous one. Pictures of the new MCBRD BAMA facility to be presented to CERN.

 

• 3- Review of electrical criteria EDMS 2363906 to be applied, under approval with Lorcan. Any deviation will be discussed and agreed after first version.

 

• 4- Discussion on past Hi pot test on HCMCBRD_S001-IU000001  show that aperture HCMCBRD_C015-IU000003 ( MCBRD_CB03) has a too low insulation to GND at 100 MOhm below 1Gohm criteria ->. IHEP to issue a Bama NCR to CERN (QA Lorcan officer) to review and keep trace in MTF
  • IHEP to inform CERN to the status of HCMCBRD_S001-IU000001 , can aperture ot GND confirmed at 330 V before shipment to Sweden ?

 

• 5- IHEP to forward remarks CERN note to bama on electrical test commenting and organise the feedback discussion and actions.

 

• 6- BAMA MIP & procedures EDMS, tests :
  • Some EDMS Manufacture Procedures have more than 650 Mo size, could you please compress images and upload new versions?
  • EDMS Inspection &test, Qualification Folders of series are Empty: Can IHEP upload applicable MIP documents, inserting BAMA column and fill the MIPs for the existing manufactured apertures controls.
  • Factory electrical hi pot holding point test AFTER manufacture at warm has to be done at Bama site ( test equipment , MEGGER as example to be approved), implemented already in MIP, controlled by CERN before shipment to IMP cold test facility.

 

• 7- Feedback on CERN MCBRD activities:
•  CERN is implementing in next prototype some improvement features of insulation of formers to Ground. This can help to considerably to solve issues of Bama coils insulation to GND. It will be presented to you and CERN ask feedback to understand if Bama can implement those small changes on formers and G11 end rings. CERN would like to understand if Bama can implement VPI for impregnation of the whole magnet assembly with CTD101K and what are limitations.