HL-LHC BGI - AC power need in point4 for magnet PC

Thursday 22 Aug 2024, 09:30 → 10:30 Europe/Zurich

zoom (CERN)

Gilles Le Godec (CERN), Gunn Khatri (CERN), James Storey (CERN), Nuno Dos Santos (CERN)

Present: Gilles, Gunn, Nuno

Discussion:

• Brief introduction of the situation and BGI project to Nuno (EN-EL)
• Nuno: We don't have AC power contribution in the BGI PLAN IDs, Gunn will add it into the BGI PLAN ID
• Gilles: The POLARIS converters (x4) shall be connected to a 400 V Electrical Rectifier Departure (ERD) with cable configuration of three phases + protective earth (3P + PE), the Neutral is not required. The AC plugs ratings should be 100Arms: this will need confirmation when magnet design is finalized (TE/MSC). Therefore, no request has been made so far to EN/EL
• Gilles: There is possibility of 3rd PC after LS3 (if money available) as a spare. So we would like to request 3 AC sockets on each side of point 4.
• Nuno: at the moment there is no dedicated EN-EL person incharge of AC powering in point4 but he will check with his team to see how to proceed.
  
• Nuno: For installation in EYETS24-25 it looks unlikely due to short notice. To be checked with EN-EL team.
  
• Gilles: The PC are part of north area project, and are expected to receive in March 2027, so there is no need to rush for installing it in EYETS.
  
• The discussion to be followed up once the magnet design is finalised and that the location of the power converters have been fixed.
  

09:30 → 09:50 AC power requirement for magnets in point4

See meeting meenites

Speakers: Gilles Le Godec (CERN), Gunn Khatri (CERN), James Storey (CERN), Nuno Dos Santos (CERN)