General information

• Stefano Redaelli (CERN)
• Rogelio Tomas Garcia (CERN)

News (Outcomes of the Chamonix Workshop, ...)

• Stefano Redaelli (CERN)
• Rogelio Tomas Garcia (CERN)

For WP2 follow the link below. For WP5 points are given as: - Continue follow up of beam lifetime measurements at the LHC, with BI (collimator scans), and beam loss analysis for Run 4 without HELs. Including characterization of tails at injection. - Need to converge on a Run 4 commissioning plan, consistent across WPs. - Various follow ups for the MD requests. In particular, several important HL-LHC topics: B1 quench test (verification of collimation performance); crystal tests tests to be carried out in commissioning for the new H devices; new IR7 optics for improved cleaning & better impedance; impedance measurements. - Deployment of crystal collimation for the ion run with the fully-upgraded system - Anything to follow up for the LHCb upgrade (lead by Matteo) - Large set of follow up studies for the new optics with inverted triplet polarity: aperture, collimation, … - Follow up CC beam test results at the SPS and possibly contribute -- No HL-related - To be finalised Feb./Mar.: ion beam energy for Run 3 - Ion commissioning: monitor overall progress in the injectors and beam quality. LHC commissioning time too short! - Follow up setup time for ion beams in the SPS: quality of slip stacking with nominal schemes (more bunches); length of cycle vs commissioning vs dedicated filling. - LHC TCL6 settings: in IP1, trade off between FASER (data quality) and AFP (radiation issue). - LPC request to use crystal collimation for 2023 TOTEM runs, high b* - Beam losses and activation of TDIS at LHC injection - New validation strategy with high non linearities in the LHC. - Can we improve the commissioning time at the LHC? Loss maps etc.

Descoping of 60A PC and related noise issue

• Michele Martino (CERN)
• Miguel Cerqueira Bastos (CERN)

AOB