rMPP meeting on MD Block 1 (2025) approval

Wednesday 28 May 2025, 09:30 → 11:00 Europe/Zurich

874/R-018 - salle de réunion activité CCC (CERN)

You can find more information on the website of the Machine Protection Panel.

2025-05-28_Minutes_rMPP_MD1-2025_approval_Vers1_0.docx

2025-05-28_Minutes_rMPP_MD1-2025_approval_Vers1_0.pdf

09:30 → 09:35 Introduction

Speakers: Christoph Wiesner (CERN), Jan Uythoven (CERN)

09:35 → 09:55 rMPP comments on MDs

Comments on MDs:
- MD14883: BSRH development
- MD14963: Halo cleaning with stable islands
- MD15423: RF capture and start of ramp with HL-LHC beams

Speakers: Cedric Hernalsteens (CERN), Christoph Wiesner (CERN), Christophe Lannoy, Daniel Wollmann (CERN), Jan Uythoven (CERN), Matteo Solfaroli Camillocci (CERN)

2025-05-28_rMPP_comments_MD1_2025.pdf

2025-05-28_rMPP_comments_MD1_2025.pptx

09:55 → 10:05 MD15209: IR3 operational losses limit

• Specify required pre-tests
• Clarify masking of interlocks and proposed intensity
• Specify speed of RF frequency trims

Speaker: Daniele Mirarchi (CERN)

rMPP_MD15209.pdf

rMPP_MD15209.pptx

10:10 → 10:20 MD15463: Long-range beam-beam compensation with flat-optics

• Clarify number of bunches
• Differences to previous MDs

Speakers: Ewen Hamish Maclean (CERN), Rogelio Tomas Garcia (CERN), Sasha Jade Horney (University of Oxford (GB))

2025-05-28_MD1-RMPP-LRBB.pdf

2025-05-28_MD1-RMPP-LRBB.pptx

10:25 → 10:35 MD15146: Rematched IR7 optics for improved cleaning and impedance -- high intensity part

• Required validation and tests
• Plan for the different fills

Speaker: Bjorn Hans Filip Lindstrom (University of London (GB))

20250528_rMPP.pdf

20250528_rMPP.pptx

10:40 → 10:50 MD15383: Losses when bringing the beams into collision

• Clarify number of bunches and bunch intensity
• Detail RF cogging procedure and required RF changes

Speaker: Xavier Buffat (CERN)

RF_cogging_MD#1_2025.pdf