FCCee optics tunning team

Wednesday 17 Nov 2021, 11:00 → 12:25 Europe/Zurich

Concerning timeline there are two important milestones, the upcoming FCC workshop and a dedicated event on optics and tuning
to take place spring 2022 (suggested by Tor and Frank).

Concerning open tasks, Tessa presented a list here:
https://indico.cern.ch/event/1095570/contributions/4608242/attachments/2342879/3994590/LNO_Nov_2021.pdf
Adding more and interest from the different labs in blue:

• BPM orthogonality errors are not included
• BPM resolution / accuracy tolerance from us (BI will only work on this in 2022 )
• DA and lifetime calculations (ESRF, EPFL, CEA)
• Solenoid imperfections to be considered
• Tapering imperfections
• IP Local corrections  (DESY+Liverpool)

• Local corrections elsewhere (e.g. Dy at sextupoles) (DESY+Liverpool).
• Non-linear corrections: lifetime, DA, chromatic aberrations, amplitude detuning, RDTs, etc. (ESRF, EPFL)
• Design of IP knobs to control IP parameters in an orthogonal fashion (EPFL)
• Design of global knobs for control of fundamental parameters e.g.: Tunes, chromas, coupling, chromatic coupling, amp. det., etc. (EPFL)
• Profiling simulation and look towards speeding up algorithm
• Development of a modular code base compatible with Xsuite / pyAT  (ESRF, EPFL, CEA)

• Machine learning (CEA, EPFL)
• Apply correction technique to low energy, Z lattice (ESRF)
• LOCO   (DESY + Liverpool)
• 3-6 COD method as used in SuperKEKB (DESY + Liverpool, CERN)
• AC dipole (CERN)
• Single kick (CERN)
• Simulation of commissioning process (ESRF)
• Optics generation: Commissioning optics and more realistic lattices (BPMs & orbit correctors)  (all)
• Experiments in PETRA (DESY+Liverpool)

• Experiments in SuperKEKB & LHC (CERN, )

• Spin tuning (EPFL)

• Lattice version control / quality control / comparison (EPFL)

• Tuning with beam-beam (EPFL)

• Chromaticity correction (CEA, ESRF, CERN)

 

Limited resources in:

• PyAT development for lifetime, DA, cluster, Response matrix. (DiTari project to migrate to python)

11:00 → 11:05 Welcome

Speaker: Rogelio Tomas Garcia (CERN)

11:10 → 11:20 Liverpool + DESY

Speakers: Ilya Agapov (Deutsches Elektronen-Synchrotron (DE)), Tessa Charles (University of Liverpool (GB))

11:25 → 11:35 ESRF

Speakers: Andrea Franchi (European Synchrotron Radiation Facility (FR)), Simon White (ESRF), Simone Luzio (ESRF)

11:40 → 11:50 EPFL

Speakers: Felix Simon Carlier (EPFL), Tatiana Pieloni (EPF Lausanne)

FCC-ee Tuning EPFL.pdf

11:55 → 12:05 CEA

Speaker: Barbara Dalena (CEA-Irfu & Université Paris-Saclay (FR))

cea_lno_tuning_bdalena.pdf

cea_lno_tuning_bdalena.pptx

12:10 → 12:20 CERN

Speakers: Jacqueline Keintzel (CERN), Leon Van Riesen-Haupt (CERN), Rogelio Tomas Garcia (CERN)

CERN_Efforts_LRH_JK.pdf

CERN_Efforts_LRH_JK.pptx