Readiness for first installation of first CDBs and associated components in UR15

Wednesday 24 Sept 2025, 14:00 → 15:00 Europe/Zurich

112/4-B60 - EN-IM Meeting Room (CERN)

Dear colleagues,

As discussed by phone with Hugues, time has come to check the readiness of the first CDBs and associated components as well as the installation sequence and procedures in UR15.

I would like to invite you to a technical meeting to go though this non exhaustive list of points:

• List of CDB’s and associated components (control racks , supporting beams, metallic structure for the WCBB,….) that you plan to install
• Expected method of transport and final positioning and list of contributors (EN-HE?)
• Availability of tooling for installation
• Provisional activities schedule
• Required finalization of associated works (WCC, EL and CV connectivity)
• …….

Feel free to add any point you consider relevant for this first installation and feel free to share the invitation to concerned colleagues.

Kind Regards,

Davide, on behalf of WP15

Participants: D. Ramrekha ; D. Bozzini ; H. Thiesen ; E. Coulot ;P. Fessia ; M. Martino

Readiness of equipment, EPC summarized that:

• The metallic structure for the power converters will be ready to be installed as planned by the 6th of October . It includes the false froors near RQX and 600 A PC, PC supporting beams and the copper plates under PCs and measuring racks.
• The CDBs are already availbel at the Flex-Buiding except the ones to be dismantled in the IT String.
• The first two prototypes of the metallic structure supporting the CDBs and the WCBB will arrive at CERN in the second half of September.

 

Discussed points

• First installation planned to start are the PCs supports that should be in point 5 from week 40 onward.
• It is considered that installing only the metallic supports without power converters will limit the space availability for temporary storage of other equipment that will be installed before the power converters.
• It is therefore considered to postpone the installation of the supporting beams at a later period just before the installation of the power converter racks.
• This point is also supported by the fact that a copper plate shall be installed below the beams covering the entire surface of the RQX, D1 and D2 power converters and the calibration racks
• SY-EPC wishes to start with the installation of the two CDB support frames and the CDB which shall be done in collaboration with EN-EL for the insertion of water-cooled cables (WCC) and CV for the installation of the water supplies to CDB and WCC
• Ideally the first mounting could take place at point L1 side because now all WCCs are already in place for both DFHX and DFHM.

 

Actions

• Organise a technical meeting with EPC, CV and EL to determine exact sequence of installation - Davide
• Check with schedule if and when possible, to start installation of CDBs in point L1 - Davide
• Check with WP6a clearances for DFHX transport tests - Davide
• Check slides from Miguel for occupancy in the UR – Darshana
• Verify discrepancies noticed between schedule of WP6 delivery dates (mails exchange on 12^th of September?) - Michele, Paolo