FCC Week 2023

Session

FCC-ee accelerator (FCCIS WP2)

6 Jun 2023, 08:30

Orchard Suite

Conveners

FCC-ee accelerator (FCCIS WP2): Baseline design

• Angeles Faus-Golfe (IJClab IN2P3 CNRS-Université Paris-Saclay (FR))

FCC-ee accelerator (FCCIS WP2): Collimation & collective effects

• Tor Raubenheimer (SLAC National Accelerator Laboratory (US))

FCC-ee accelerator (FCCIS WP2): Optics correction and tuning

• Stewart Takashi Boogert (University of London (GB))

FCC-ee accelerator (FCCIS WP2): code development

• Tatiana Pieloni (EPFL)

FCC-ee accelerator (FCCIS WP2): Alternative FCC-ee optics development

• Mark James Boland (University of Saskatchewan (CA))

396. Layout, optics, parameters

Dr Katsunobu Oide (Universite de Geneve (CH))

06/06/2023, 08:30

Oral presention (by invitation only)

239. Top-up injection baseline scenario

Yann Dutheil (CERN)

06/06/2023, 09:00

FCC-ee accelerator

Oral presention (by invitation only)

The FCC-ee collider requires continuous injection not only to maximize the average luminosity but also to ensure the stability of the beams by maintaining the charge of colliding bunches. The full energy booster will accelerate electron and positron beams to the collider energy which will then be injected into the collider ring.

Several schemes are being studied but a conventional top-up...

245. Beam lifetime due to radiative Bhabha scattering

Krzysztof Piotrzkowski (AGH University of Science and Technology (PL))

06/06/2023, 09:30

FCC-ee accelerator

Oral presention (by invitation only)

A good understanding of radiative Bhabha scattering at high energy e+e- colliders is important as it might become the limiting factor for the beam lifetimes. In this talk, the impact of beam-size effects will be presented, in particular the strong suppression of the radiative Bhabha scattering due to small lateral beam sizes at the interaction points. The resulting beam lifetime limits will be...

279. FCC-ee Collimation

Andrey Abramov (CERN)

06/06/2023, 10:30

FCC-ee accelerator

Oral presention (by invitation only)

346. Technical challenges and required studies for FCC-ee BIDs

Antonio Perillo Marcone (CERN)

06/06/2023, 10:50

FCC-ee accelerator

Oral presention (by invitation only)

280. Collective effects

Mauro Migliorati

06/06/2023, 11:10

FCC-ee accelerator

Oral presention (by invitation only)

281. Electron cloud studies

Luca Sabato (EPFL - Ecole Polytechnique Federale Lausanne (CH))

06/06/2023, 11:35

FCC-ee accelerator

Oral presention (by invitation only)

268. Beam instrumentation for FCC-ee

Thibaut Lefevre (CERN)

07/06/2023, 08:30

FCC-ee accelerator

Oral presention (by invitation only)

This talk will present an overview on the beam instrumentation for the FCCee accelerator complex. The specifications and main challenges for the FCCee beam instrumentation will be discussed. A status on the on-going R&D activities will be also reported, together with the plans for future studies.

292. Tolerances & BBA strategy

Tor Raubenheimer (SLAC National Accelerator Laboratory (US))

07/06/2023, 08:55

FCC-ee accelerator

Oral presention (by invitation only)

417. Status of the FCC-ee optics tuning studies

Rogelio Tomas Garcia (CERN)

07/06/2023, 09:10

Oral presention (by invitation only)

293. Optics measurements & BB alignment

Jacqueline Keintzel (CERN)

07/06/2023, 09:25

FCC-ee accelerator

Oral presention (by invitation only)

329. Simulations of IR tuning

Leon Van Riesen-Haupt (EPFL - Ecole Polytechnique Federale Lausanne (CH))

07/06/2023, 09:45

FCC-ee accelerator

Oral presention (by invitation only)

n this talk, we will discuss the critical role of insertion region (IR) tuning tools in the successful simulation and operation of the FCC. Due to the complex design and challenging nature of the FCC, these tools are essential for achieving sufficient luminosity and machine stability. Collaboration with experts in the field is important for designing effective IR tuning tools that meet the...

327. Code development status

Leon Van Riesen-Haupt (EPFL - Ecole Polytechnique Federale Lausanne (CH))

08/06/2023, 13:30

FCC-ee accelerator

Oral presention (by invitation only)

With the increasing complexity of colliders, it is crucial to consider many physical phenomena in accelerator simulation studies, including complex effects such as radiation, beam-beam, and impedance. However, existing simulation tools are often outdated or focus on a single aspect. To address this challenge, the CHART collaboration is developing a software framework that integrates different...

304. Accelerating Beam Dynamic Simulations

Davide Di Croce (EPFL - Ecole Polytechnique Federale Lausanne (CH))

08/06/2023, 13:50

FCC-ee accelerator

Oral presention (by invitation only)

305. Beam-beam code progress

Peter Kicsiny (EPFL)

08/06/2023, 13:55

FCC-ee accelerator

244. Review of MAD-X for FCC-ee studies

Guillaume Simon (Université Paris-Saclay (FR))

08/06/2023, 14:15

FCC-ee accelerator

Oral presention (by invitation only)

The design of the electron-positron Future Circular Col-
lider (FCC-ee) challenges the requirements on optics codes
(like MAD-X) in terms of accuracy, consistency, and per-
formance. This paper analyses MAD-X TWISS, TRACK
and EMIT modules by comparing their mutual consistency,
absolute accuracy and stability and will make improvement
proposals.

238. Electron cloud studies for the FCC-ee

Fatih Yaman (Izmir Institute of Technology (IYTE))

08/06/2023, 14:30

FCC-ee accelerator

Oral presention (by invitation only)

We investigate the effects of the updated beam and machine parameters on the electron cloud instability for the FCC-ee arc dipole & drift regions by considering ‘ECLOUD’ and ‘Furman-Pivi’ secondary emission yield models and realistic photoemission yield values.

306. VACI-suite status and examples

Ali Rajabi

08/06/2023, 14:45

FCC-ee accelerator

Oral presention (by invitation only)

307. Alternative HFD/DFD optics

Dr Pantaleo Raimondi (SLAC National Accelerator Laboratory (US))

08/06/2023, 15:30

FCC-ee accelerator

Oral presention (by invitation only)

241. Dynamic aperture and momentum acceptance for alternative optics

Michael Hofer (CERN)

08/06/2023, 16:00

FCC-ee accelerator

Oral presention (by invitation only)

An alternative lattice design for the FCC-ee collider ring has been proposed, which aims to provide large Dynamic Aperture and Momentum acceptance through the dedicated correction of higher order nonlinear terms excited by the chromaticity correction sextupoles.
A large acceptance of the machine is required to provide a sufficient beam lifetime and good injection efficiency, which are both...

236. Combined function lattice with constant partition numbers for FCC-ee

Cristobal Garcia (EPFL - Ecole Polytechnique Federale Lausanne (CH))

08/06/2023, 16:20

FCC-ee accelerator

Oral presention (by invitation only)

In order to explore potential improvements to the current lattice design for FCC-ee, this work looks at the use of Combined Function Magnets (CFM) within the short straight sections of the arc cells. The use of CFMs introduces a change in the damping partition numbers. To avoid this it is necessary to maintain the values of the Synchrotron Radiation Integrals (I2 and I4), which are used to...

312. Synchrotron radiation background for an alternative FCC-ee optics

Kevin Daniel Joel Andre (CERN)

08/06/2023, 16:40

FCC-ee accelerator

Oral presention (by invitation only)

An alternative lattice and beam optics have been developed for the FCC-ee which aim to provide large dynamic aperture and momentum acceptance via the correction of high order nonlinearities. In this presentation, the synchrotron radiation sources have been evaluated and a synchrotron radiation collimation scheme has been developed to protect the central beam pipe within the particle detector...