LS3 activities concerning BE-GM and TE-MSC

Wednesday 11 Nov 2026, 14:00 → 15:00 Europe/Zurich

180/1-N51 (CERN)

Activity 1)

Request to release the W-bellow clamps for re-alignment and stress relief of several equipment :

• All connection cryostats
• Magnets with a roll angle about a certain criteria (for the moment exercise done with 9 mrad, to be clarified)

 

Only the clamps on the side of the rigid sleeve to be released (opposite to the side on which we slide the bellow)

 

Activity 2) Jacks out of range, Q10R6 + MB.B21R6

• P6 issue - Meeting in 2027 to make a proposal to LMC
• MB.B21R6 - Proposal is to take one jack from the stock and remove 1 or 2 mm from the base plate. To be checked how to remove the existing jack (maybe by controlled lifting by BE-GM)

 

Activity 3) D1 at P2/P8

• Inverse banana shape. To be cross-checked with ABP if this is an issue for aperture. Does not seem so, since D1 is the LHC magnet with the largest apertuer

 

Action items:

1) MSC to check with VSC if the clamp release can create a risk for the joint integrity and bring some NCs

2) MSC and WGA to define a clear criteria for the limit roll angle

3) Based on (2), BE-GM will review the magnet table

4) MSC to check with BE-ABP the aperture of D1

5) Once a clear plan is established, check the LS3 planning and try to see how all this additional work fits. Then proposal to be transmitted to EN-ACE. Preferably activities to be scheduled in 2027

 

 

14:00 → 14:20 Discussion

Speakers: Herve Prin (CERN), Mr Jean-Frederic Fuchs (CERN), Jose Ferradas Troitino (CERN)

LS3 activities concerning BE-GM and TE-MSC.msg

LS3 LExx components.msg