MD1 results and MD2 preparation (part 1)

Tuesday 5 Aug 2025, 14:00 → 17:30 Europe/Zurich

ZOOM

Georges Trad (CERN), Giovanni Iadarola (CERN), Jan Uythoven (CERN)

14:00 → 14:10 Introduction and upcoming timeline

Speakers: Georges Trad (CERN), Giovanni Iadarola (CERN), Jan Uythoven (CERN)

intro_lswg_meeting.pdf

intro_lswg_meeting.pptx

14:10 → 14:30 OMC studies

MD1 results:
- MD15463 Long-range beam-beam compensation with flat-optics

MD2 proposals:
- MD16203 Long-range beam-beam betabeat compensation with flat-optics
- MD15464 Refining optics corrections at top energy

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

LSWG Meeting 5 August 2025.pdf

14:30 → 14:50 Halo and incoherent effects

MD1 results:
- MD14963 Halo cleaning with stable islands
- MD15363 Emittance growth, tail population and losses with HL INDIVs

MD2 proposals:
- 15966 Wire Compensation and Flat Optics
- 16003 Collisions of 8b4e trains with HL bunch intensity
- 16063 LHC orbit and tunes dependence on SPS

Speakers: Dora Erzsebet Veres (Goethe University Frankfurt (DE)), Guido Sterbini (CERN), Sofia Kostoglou (CERN)

LSWG_20250805_DoraEVeres.pdf

LSWG_HL_MD1_MD2_final.pdf

LSWG_HL_MD1_MD2_final.pptx

14:50 → 15:10 Collimation studies

MD1 results:
- MD15146 - Rematched IR7 optics for improved cleaning and impedance -- high intensity part

MD2 proposals:
- MD16225 Detailed studies of collimation hierarchy with 2025 operational configurations
- MD16226 Unprecedented characterisation of crystal de-channeling at 6.8 TeV

Speakers: Bjorn Hans Filip Lindstrom (University of London (GB)), Ludovica Bertolozzi (Politecnico di Milano (IT)), Milica Rakic (EPFL - Ecole Polytechnique Federale Lausanne (CH)), Stefano Redaelli (CERN)

CERN_MD1_results.pdf

CERN_MD1_results.ppt

SRedaelli_2025-08-05_hierarchy.pdf

SRedaelli_2025-08-05.pdf

15:10 → 15:30 TWOCRYST

MD1 results:
- MD14923 TWOCRYST crystal characterization
- MD14924 TWOCRYST double channeling

MD2 proposals:
- MD14925 TWOCRYST long crystal measurements at different energies
- MD14926 TWOCRYST secondary halo channeling

Speaker: Pascal Hermes (CERN)

250805_TWOCRYST_CM.pdf

250805_TWOCRYST_Results.pdf

15:30 → 15:45 Stability and noise studies

MD1 results:
- MD15383 Losses when bringing the beams into collision

MD2 proposals:
- MD16183 Injection instability growth rate and tune shift

Speakers: Chiara Antuono, Xavier Buffat (CERN)

2025-08-05_LossesInADJUST.pdf

MD16183 Inj_instability_GR_tune shift_2025.pdf

MD16183 Inj_instability_GR_tune shift_2025.pptx