Joint Accelerator Performance Workshop 2024

Session

Beam dynamics modelling <-> Equipment

11 Dec 2024, 08:30

Royal Plaza Montreux & Spa

Conveners

Beam dynamics modelling <-> Equipment

• Cedric Hernalsteens (CERN)
• Helga Timko (CERN)

15. Longitudinal modelling and operational optimisation across the complex (20'+10')

Birk Emil Karlsen-Baeck (Sapienza Universita e INFN, Roma I (IT))

11/12/2024, 08:30

• Control loops modelling and applications across the chain
• LHC power limitation at injection
• BCMS v. std longitudinal evaluation
• Modelling aspects of bunch length control in the ramp and flattop

16. Electron cloud (20'+10')

Lotta Mether (CERN)

11/12/2024, 09:00

• Where do we stand in the SPS and LHC?
• Update on e-cloud modelling, comparison with measurements and projections
• Optimum filling scheme options for 2025-2026 from e-cloud perspective (to be completed in the session 3 talk “LHC: issues, mitigations and plans”)

17. Impedance modelling and equipment design (20'+10')

Chiara Antuono (Sapienza Universita e INFN, Roma I (IT)), Michela Neroni (Sapienza Universita e INFN, Roma I (IT))

11/12/2024, 09:30

• Impedance modelling implications on equipment design (WS, BGI, TDIS, kickers, etc.)
• Intensity limitation update for the vacuum modules, any showstopper to start 2025 with 1.8e11 ppb?
• Update on impedance budget for LHC – which affect also HL-LHC?

18. Benchmarking of optics and magnetic models (15'+10')

Ewen Hamish Maclean (CERN)

11/12/2024, 10:30

• Magnetic model of the PS main magnets, improvement optics and application to other machines
• Control of Q and Q’
• Zero dispersion optics

19. Beam loss monitor thresholds (15'+10')

Sara Morales Vigo

11/12/2024, 10:55

• Changes in 2024 in thresholds (ions, TCPs, IR3 etc.)
• Do we need blindable injection BLMs?

42. Discussion