Web page for LHC Interconnect Coordination & Support

Picture shows the LHC tunnel with a Dipole/Dipole interconnection still open.




General Search 


 Interconnections telephone list





 Contents of this page:



Work Flow Chart


 Status by sector:

Sector 1-2

Sector 2-3

Sector 3-4

Sector 4-5

Sector 5-6

Sector 6-7

Sector 8-1

Latest report

 Other web pages:

    Status of Cryodipoles

    SSS Coordination

    IC Quality Assurance

  Reference documents and

   LHC Interconnections naming
   and position convention

   LHC Interconnections

    (CDD account needed)

Interconnection Leader:
F. Bertinelli (AT-MCS)

Arc coordination team:
P. Fessia (team leader): general planning, IC organization
P. Legrand: infrastructure, coordination of PEFRAs
 A. Musso: sector coordination
A. Sajous, logistic and stock responsible
 M. Struik: arc interconnection component manager
 C. Vollinger
: detailed planning, coordination of DS regions.

Mandate  -  Status  -  Work Flow Chart - Presentations/Reports


Coordination and support of the interconnect works in the LHC tunnel.

The arc extends between DFBA-to-Q7 interconnects (except some activities in the DS area associated to DFBA IC work).

The responsibility begins with the start of the IC work and ends with the closure of the W- and Z-bellows and the leak tightness test.

During subsequent activities - pressure test, flushing and warm ELQA (under responsibility of the AT-MCS Pressure Test Coordinator), cool-down, commissioning, etc. - provision of the necessary support.

 Activities/ Status by sector


Data for General Advancement Plot is counted by number of interventions and grouped by activities as follows:

  • IC preparation: Magnet alignment, IC pre-inspection, IC released for work,
  • Electrical Interconnects & QA per halfcell: PAQ, US weld of spool pieces, brazing of main busbars,
  • Cryo-Lines Welding & Testing: Welding of main busbar lines M1, M2, M3, weld K1 line, K2 line, K3 line, Cí line, X line. Vacuum tests of K lines, Cí line, X line.
  • N-Line package: Insert N line, AIV 1, AIV 2, US welding of N line, weld of large sleeve for N line.
  • Beam Pipes Welding & VAC tests. VAC sector test: Welding of V1, V2, E line and VAC tests V1, V2, E line. RF test magnet chain.
  • Close W bellow and Jumper.
  • VAC test for sector.


Status by sector


 Master Interconnection FlowDiagramm (Work Flow Chart)

also as download in pdf-format .

 Presentations/ Reports

MARIC 2006


MARIC 2007


TCC/ICC 2006


TCC/ICC 2007


Weekly Report on Interconnect works






Updated 19-December-07 by Olivier Denis