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Monday 4 Aug 2025, 14:00 → 17:30 Europe/Zurich

774/1-079 (CERN)

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

1 Introduction and upcoming timeline

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

2 OP studies

MD2 proposals:
- MD15003 Combined Ramp/Squeeze/Rotatate for 2026 and HL-LHC
- MD15603 Commissioning of Ramp in steps
- MD15683 Verification of beam-beam corrections on luminosity with tune scaling for multi-IP
- MD15883 Studies in preparation for 2026 HL test (ramp in steps)
- MD16023 Slow-start Energy ramp
- MD16243 Main arc quadrupole modulation studies

Speakers: Jorg Wenninger (CERN), Matteo Solfaroli Camillocci (CERN), Michi Hostettler (CERN)

3 OMC studies

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

MD2 proposals:
- MD15465 ADT and ACD Linear and nonlinear optics at injection/ramp
- MD16083 Octupolar Correctors as a Mitigation Strategy for Decapolar RDTs Induced by Landau Octupoles
- MD16203 Long-range beam-beam betabeat compensation with flat-optics

Speaker: Ewen Hamish Maclean (CERN)

4 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)

5 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)), Milica Rakic (EPFL - Ecole Polytechnique Federale Lausanne (CH)), Stefano Redaelli (CERN)

6 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)

7 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)

8 Injection studies

MD2 proposals:
- MD13743 High intensity trains injection
- MD15205 TI2-TI8 auto steering

Speakers: Francesco Maria Velotti (CERN), Helga Timko (CERN), Yann Dutheil (CERN)

9 RF studies

MD1 results:
- MD15423 RF capture and start of ramp with HL-LHC beams
- MD15425 Improved cleaning of de-bunched beam at LHC injection

MD2 proposals:
- MD15424 Longitudinal loss of Landau damping

Speaker: Helga Timko (CERN)

10 Beam instrumentation studies

MD1 results:
- MD14883 BSRH development

Speaker: Jan Pucek (SY-BI-PM)

11 Electron cloud studies

MD2 proposals:
-  Heat load measurements

Speakers: Marta Katarzyna Zielinska (Warsaw University of Technology (PL)), Reyes Alemany Fernandez (CERN)

12 O & Ne studies

Ion MD results:
- MD15043 Crystal collimation performance with Oxygen Beam
- MD15044 Crystal collimation performance with Neon Beam

Speakers: Marta Katarzyna Zielinska (Warsaw University of Technology (PL)), Reyes Alemany Fernandez (CERN)