FCC Week 2024

10 Jun 2024, 08:00 → 14 Jun 2024, 13:00 US/Pacific

The Westin St. Francis San Francisco on Union Square

Frank Zimmermann (CERN), Michael Benedikt (CERN)

We are delighted to extend a warm invitation to the tenth edition of the Future Circular Collider (FCC) Conference, scheduled to unfold in the vibrant city of San Francisco, United States, from June 10 to 14, 2024. The meeting is jointly co-organized with Argonne National Laboratory (ANL), Lawrence Berkeley National Laboratory (LBNL), Brookhaven National Laboratory (BNL), SLAC National Accelerator Laboratory, Fermi National Accelerator Laboratory (FNAL), Thomas Jefferson National Accelerator Facility (JLAB), and the US Department of Energy (DOE) and with the generous support of the University of California Berkeley, University of California Davis, University of California Irvine, University of California Santa Cruz, and California State University East Bay. 

This significant gathering, collaboratively organized with the EU-funded H2020 FCCIS project, serves as a convergence point for international experts spanning diverse domains. Together, we will advance the feasibility study for a visionary post-LHC research infrastructure at CERN.

Building on the outcomes of the FCC midterm review, a preferred layout and placement scenario have been identified, capable of accommodating both FCC-ee and FCC-hh, without compromising the scientific excellence inherent in each proposed research programme.

We invite you to be part of the FCC Week 2024, contributing to a comprehensive review of the FCC's progress - a pivotal juncture in our journey toward completing the FCC Feasibility Study by 2025.

Gain valuable insights into achievements to date, confront challenges faced, and delve into the strategic roadmap for forthcoming phases.

Engage in dynamic discussions with key stakeholders and play a role in shaping the trajectory of this groundbreaking initiative.

 

Plenary and Parallel Sessions:

Connect with fellow researchers, academics, and professionals across dedicated sessions covering physics, experiments, machine design, technologies, infrastructures, and civil engineering.

The first day will feature plenary keynote presentations by top-ranking international speakers providing an overview of ongoing activities across all study areas.

Stay informed about updated boundary conditions, machine parameters, and the captivating physics potential of the FCC integrated program spanning decades.

Parallel sessions will delve into specific domains, fostering collaboration, providing opportunities to share your research, and faciliting lasting connections with the global particle physics community.

 

Poster Sessions:  Showcase your research through poster sessions, immersing yourself in cutting-edge projects in  particle physics, accelerator physics and technology. 

Explore the latest advancements and draw inspiration from the diverse range of research on display.

 

Social Events and Cultural Experiences:

Take a breather from the scientific discussions and partake in social events designed to foster a sense of community. Immerse yourself in local culture, cuisine, and entertainment, creating memorable experiences beyond the lecture halls and workshops.

On Tuesday 11 June, come join us at the Exploratorium (Pier 15) for a mind-blowing event where we delve into the mysteries of our universe! From the Higgs boson to dark matter, we will explore the frontiers of particle physics and how international collaborations tackle these profound questions. As we journey through these discoveries, we will also discuss how advances in particle physics contribute to technological innovations and societal progress. 

Find out more: https://fccweek2024.web.cern.ch/PublicEvent.html

Mark your calendars for this unparalleled opportunity to be part of the ongoing evolution in particle physics.

Join us at FCC Week 2024, where collaboration meets innovation to shape the future of scientific exploration.

We eagerly anticipate your active participation!

FCCIS – The Future Circular Collider Innovation Study. This INFRADEV Research and Innovation Action project receives funding from the European Union’s H2020 Framework Programme under grant agreement no. 951754.

                                                          Industrial Sponsors 

 

fcc.week.2024.SF.final-21032024.pdf

St. Francis Stacked Map - Future Circular Collider (FCC) Week.pdf

Programme package FCCW2024-Overview.pdf

Monday 10 June

08:00 Welcome coffee

Monday plenaries

Convener: Joanne Hewett (Brookhaven National Laboratory)

1 Welcome remarks

Speakers: John L. Sarrao (SLAC National Accelerator Laboratory), Michael Stewart Witherell (Lawrence Berkeley National Laboratory)

2 The Future Circular Collider: CERN plans

Speaker: Fabiola Gianotti (CERN)

slides.pdf

3 The FCC - a view from CERN Council

Speaker: Eliezer Rabinovici (President of CERN Council, Hebrew University)

FCC WEEK 090624 June 2024.pdf

4 Practical information about the conference

Speaker: Julia Lynne Gonski (SLAC National Accelerator Laboratory (US))

0610_jgonski_fccWeekWelcome.pdf

5 NSF: Opening Remarks and Perspectives on US Engagement in FCC

Speaker: Jim Shank (U.S. National Science Foundation)

FCC_NSF_Shank_2024.pdf

6 DOE: Opening Remarks and Perspectives on US Engagement in FCC

Speaker: Regina Abby Rameika (US D.O.E.)

FCC-Week-DOE-Rameika-Presentation-June-10-2024.pdf

FCC-Week-DOE-Rameika-Presentation-June-10-2024.pptx

10:20 Coffee break

Monday plenaries

Convener: Andrew James Lankford (University of California Irvine (US))

7 Key Note

Speaker: Joanne Hewett (BNL)

FCC Week Hewett.pdf

8 FCC Feasibility Study status

Speaker: Michael Benedikt (CERN)

240610_FCC-Feasibility-Study-Status-ap.pdf

240610_FCC-Feasibility-Study-Status-ap.pptx

9 FCC collaboration status

Speakers: Emmanuel Tsesmelis (CERN), Gregorio Bernardi (APC Paris CNRS/IN2P3), Philippe CHOMAZ

FCC Week 2024 Collaboration.pdf

12:30 Conference photo

12:35 Lunch

Monday plenaries

Convener: Tor Raubenheimer (SLAC National Accelerator Laboratory – On Leave)

10 Implementation scenario

Speaker: Johannes Gutleber (CERN)

FCC-2405041730-JGU_Implementation_Overview_FCCWeek2024_V0100.pdf

FCC-2405041730-JGU_Implementation_Overview_FCCWeek2024_V0100.pptx

11 Civil Engineering

Speaker: Timothy Paul Watson (CERN)

2406011_TWA_FCC_week_Plenarary.pdf

2406011_TWA_FCC_week_Plenarary.pptx

12 FCC Accelerators status

Speaker: Frank Zimmermann (CERN)

accelerator-FCCW-2024-final.pdf

accelerator-FCCW-2024-final.pptx

13 FCC technologies & TI

Speaker: Jean-Paul Burnet (CERN)

FCC_Acc_RD_TI_V3.pdf

FCC_Acc_RD_TI_V3.pptx

FCC CERN-Cornell collaboration on SRF: (Closed session)

Convener: Franck Peauger (CERN)

AGENDA

15:40 Coffee break

Monday plenaries

Convener: Anadi Canepa (Fermi National Accelerator Lab. (US))

14 SuperKEKB status and plans

Speaker: Mika Masuzawa (KEK)

MasuzawaFCC.pdf

15 The Physics at FCC-ee

Speaker: Zoltan Ligeti (Lawrence Berkeley National Lab. (US))

SFtalk.pdf

16 Detectors requirements and benchmarks

Speaker: Junjie Zhu (University of Michigan (US))

DetectorRequirements_Zhu.pdf

17 ECFA news and DRD collaborations progress

Speaker: Didier Claude Contardo (Centre National de la Recherche Scientifique (FR))

FCCWeek-ECFADRD_DC_10062024.pdf

FCCWeek-ECFADRD_DC_10062024.pptx

18 US Plans FCC-PED

Speaker: Srini Rajagopalan (Brookhaven National Laboratory (US))

FCCWeek2024.pdf

19 US Plans FCC-Accelerators

Speaker: Tor Raubenheimer (SLAC National Accelerator Laboratory – On Leave)

240610 FCC US Accelerator Org.pdf

240610 FCC US Accelerator Org.pptx

19:00 Welcome reception

Tuesday 11 June

08:00 Welcome coffee

Physics, Experiments and Detectors: Physics Case and Theoretical Calculations (1)

Convener: Robert Szafron (Brookhaven National Laboratory)

20 FCC_YQA

Speaker: Patrick Janot (CERN)

YQA_FCCWeek.pdf

21 Higgs physics and SMEFT at FCC

Speaker: Prof. Francis Petriello (Northwestern University and Argonne National Lab)

petrielloFCC24.pdf

22 BSM searches with FCC-ee

Speaker: Christopher Verhaaren (Brigham Young University)

FCCeeBSMJune2024.pdf

23 QCD for Higgs physics at FCC-ee

A summary of a workshop (May 2024) dedicated to QCD physics of relevance for Higgs measurements at the FCC-ee will be presented.

Speaker: David d'Enterria (CERN)

dde_QCD_Higgs_FCCweek_SF_jun24.pdf

24 The e+ e- -> Z H process in the Standard Model Effective Field Theory beyond Leading Order

Speaker: Konstantin Asteriadis

asteriadis_fccw24_11_06_24.pdf

25 FCC-ee sensitivity to SUSY through precision Z-boson measurements

We show that the FCC-ee will have sensitivity to the MSSM electroweak sector that is complementary to the LHC, through the precision Z-boson measurements. Our results provide added motivation and quantitative targets for the desired systematic uncertainty on this measurement.

Speaker: Kevin Langhoff (UC Berkeley)

Tera-Z_FCC_Week_2.pdf

Tera-Z_FCC_Week.pdf

FCC accelerators: FCC-ee baseline design & optics, top-up

Convener: Dr Angeles Faus-Golfe (IJClab IN2P3 CNRS-Université Paris-Saclay (FR))

26 GHC optics and collider parameters

Speaker: Dr Katsunobu Oide (Universite de Geneve (CH))

Optics_Oide_240611.pdf

The GHC lattice based on the twin-aperture quadrupole scheme has made several incremental updates, with better luminosity and longer lifetime at collision. A few issues such as the optimum crab waist ratio will be presented. Lattices at each energy are already in the repository.

27 Beam-beam studies for FCC-ee

Speaker: Peter Kicsiny (EPFL)

pkicsiny_fccweek_2024.pdf

pkicsiny_fccweek_2024.pptx

28 FCC-ee collimation

Speaker: Giacomo Broggi (CERN, Sapienza Università di Roma e INFN Laboratori Nazionali di Frascati)

FCCee_collimation_FCCweek2024.pdf

FCCee_collimation_FCCweek2024.pptx

29 Top-up injection into the collider

Speaker: Yann Dutheil (CERN)

collider_topup_injection.pdf

collider_topup_injection.pptx

Technical Infrastructure: Safety

Convener: Benoit Delille (CERN)

30 Safety Concept of the FCC

In view of the FCC feasibility study report, the Safety WP is tasked with the editorial of a Safety Concept. This report will detail all the risks associated with the future activities of the FCC-ee machine during the civil engineering construction, installation and operation phases.
The outcome of the safety concept leans of the results of several safety studies performed by the HSE Unit and the implementation of safety-relevant systems which are designed and proposed by other WPs in the Technical Infrastructure Pillar.
This presentation will provide a general overview of the current status of the Safety concept, as well as presenting the results of the most recent safety studies that were performed in the last year, providing the scientific support to the safety concept.

Speakers: Andre Henriques (CERN), Mr Oriol Rios (CERN)

FCC_week_2024_safety_concept.pdf

FCC_week_2024_safety_concept.pptx

31 Personnel Safety Systems

The safety systems for the protection of personnel in the CERN accelerator complex are designed, installed, and maintained by the EN-AA group. The group relies on industrial partners and supports, whenever possible, off-the-shelf solutions complemented with specific studies and developments when needed. This talk gives an overview of the safety systems required by the FCC safety concept, such as access control, fire and ODH detection, and evacuation systems. Use of proven solutions is discussed, new challenges resulting from FCC specificities highlighted and areas requiring further attention identified.

Speaker: Tomasz Ladzinski (CERN)

FCCweek20240611-PersonnelSafetySystems.pdf

FCCweek20240611-PersonnelSafetySystems.pdf

FCCweek20240611-PersonnelSafetySystems.pptx

32 Radiological studies for FCCee

The radiation protection studies shall ensure that the proposed design of FCCee is compatible with the objectives and constraints for radiological protection of the personnel and the environment. An assessment of the radiological parameters, such as the levels of prompt and residual radiation and activation, allows to evaluate their impact during the operation and maintenance of the facilities.

The studies further provide input, the expected released activities through air and water, to the radiological environmental impact study. This allows to confirm that the design of the FCCee will align with the environmental objectives and constraints for the protection of the public.

FLUKA Monte Carlo simulations are performed to confirm that the envisaged design of the civil engineering infrastructure minimizes the prompt and residual radiation levels in areas where access is required. Either during maintenance periods, i.e. in the arc, at beam and beamstrahlung dump locations, around the positron target or during operation periods, i.e in the service caverns, the klystron galleries or the surface facilities.

A first evaluation of material activation is also conducted, as it involves various types of constraints. The activation of high volume accelerator components (such as yokes, coils, photon absorbers, synchrotron radiation shielding) is evaluated to assess the potential radioactive waste production. This study is still in its preliminary stage, and will help to select materials that can be removed from regulatory control within a foreseeable timespan after the FCCee operation.

We will present an overview of the conducted studies and outcomes and present an outlook on what will be important in terms of radiation protection optimisation in the ongoing feasibility study and as the FCCee project further develops.

Speaker: Giacomo Lavezzari (CERN)

FCCWeek2024_RPstudy_GLavezzari.pdf

FCCWeek2024_RPstudy_GLavezzari.pptx

33 The FCC Robotic System for Safety and Availability

The availability and safety of the Future Circular Collider (FCC) are critical factors for its operation. To enhance these parameters cost-effectively, the FCC Robotic System (FCCRS) has been conceived and it is under development during the last years. The FCCRS comprises a Remote Maintenance and Inspection System (RMIS) and a Survayance and Emergency Shuttle (SES). This system will significantly improve machine availability, tripling the allowable mean time between failures for critical infrastructure. Integral to the FCC's safety strategy, the SES will minimize emergency intervention times and protect workers from hazardous situations. This presentation will also share insights from previous robotic interventions across the CERN complex, providing conclusions and recommendations for future machine and infrastructure design, as well as intervention protocols.

Speaker: Hannes Gamper

FCCWeek24_Robotics.pdf

FCCWeek24_Robotics.pptx

10:00 Coffee break

Accelerator technical design: Synergies and innovation

Convener: Sergey Belomestnykh

34 Synergies of FCC-ee with ILC and EIC

Speaker: Michiko Minty (BNL)

FCC Week 2024 - Minty 11Jun2024.pdf

35 Conceptual Design of HTS Accelerator Magnets for Future Lepton Colliders

Speaker: Vladimir Kashikhin (FNAL)

FCC_Week_HTS_Magnets_VK_060724a.pdf

36 Design of HTS magnets for the short straight sections, the HTS4 project

Speaker: m Koratzinos (Paul Scherrer Institute (CH))

HTS4_San_Fransisco.pdf

HTS4_San_Fransisco.pptx

37 Advantages of C3 technology for the injector linacs

Speaker: Emilio Nanni (SLAC)

FCC Week FINAL.pdf

FCC Week FINAL.pdf

FCC Week FINAL.pptx

FCC Week FINAL.pptx

FCC accelerators: Optics alternatives & lessons

Convener: Mika Masuzawa (KEK)

38 LCC Optics

Speaker: Dr Pantaleo Raimondi (Fermi National Accelerator Laboratory)

LCC FCC San Francisco Raimondi.pdf

LCC FCC San Francisco Raimondi.pptx

39 Nested Magnet Optics for FCC-ee

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

Nested Magnet Optics for FCC-ee highlighted.pdf

Nested Magnet Optics for FCC-ee highlighted.pptx

40 Monochromatization Optics for FCC-ee

Speaker: Dr Angeles Faus-Golfe (IJClab IN2P3 CNRS-Université Paris-Saclay (FR))

FCCweek_2024_monochrom.pdf

FCCweek_2024_monochrom.pptx

41 The IOTA Research Program and Possible Studies Relevant for the FCC

Speaker: Giulio Stancari (Fermilab)

Stancari_FCC_Week_2024-06-11_IOTA.pdf

Physics, Experiments and Detectors: Physics Case and Theoretical Calculations (2)

Convener: Christoph Paus (Massachusetts Inst. of Technology (US))

42 BSM at FCC-ee

Speaker: Zeynep Demiragli (Boston University (US))

fccweek_2024_demiragli.pdf

43 EW/QCD measurements using ee->hadrons

Speaker: Marina Malta Nogueira (Massachusetts Inst. of Technology (US))

Opportunities & Challenges Hadronic Cross-Section at the Z-pole (1).pdf

44 General Higgs overview at FCC-ee

Speaker: Michele Selvaggi (CERN)

Higgs_Top_Performance_FCCWeek_SF2024.pdf

45 Jet tagging as a tool for measuring Higgs couplings at O(0.1%) precision and H->ssbar

Speaker: Loukas Gouskos (Brown University (US))

lg_fccee_higgs_fccweek_2024mar.pdf

46 Higgs properties + Top at FCC-ee

Speaker: Ang Li (Brookhaven National Laboratory (US))

2024_06_10_FCC_Week_Ang.pdf

Technical Infrastructure: Transport, logistic and Survey

Convener: Ingo Ruehl (CERN)

47 Transport concept for personnel (normal and evacuation)

The talk will provide an overview of the model identified to transport people from the surface to their place of work in the tunnel and vice versa.
The transport concept is currently based on personnel lifts linking the surface to the underground facilities and bespoke automated vehicles running in the accelerator tunnel and the service caverns.
During the presentation, the safety requirements as well as the technical specifications that these handling systems shall respect will be described; the talk will also cover the main features of the transport model that are required to guarantee an efficient transport of people in normal conditions and a safe evacuation of the personnel in case of emergency.

Speaker: Roberto Rinaldesi (CERN)

Transport concept for personnel (normal and evacuation).pdf

Transport concept for personnel (normal and evacuation).pptx

48 Update on magnet and people transport vehicles and logistics simulation study

The presentation will provide an update on the concepts for the people transport vehicle and the magnet transport vehicle. It will also include new information on the logistics study for the transport and installation of the collider and booster ring in the underground tunnel.
The concept for the people transport vehicle is specifically designed to navigate the narrow tunnel of the FCC. The presentation will provide information on its design features, including vehicle dimensions, capacity for personnel and material, motorization, battery, and autonomous driving capabilities.
The general concept for the magnet transport vehicle has undergone further development, with a focus on the gripping systems adapted to the different types of magnets. The presentation will show the systems for the magnets used in the collider ring and booster ring.
Additionally, the presentation will share results of new experiments conducted as part of the logistics study for the installation of the collider and booster ring. These experiments were aimed at addressing the bottleneck caused by the shaft crane.

Speaker: Benedikt Oliver Müller

FCCWeek2024_Update on magnet and people transport vehicles and logistics simulation study.pdf

49 Geodesy update

Building the FCC tunnel, installing and aligning each component and experiment of the machine at the intended location will be a challenging task relying notably on the quality and accuracy of the geodetic infrastructure.

In collaboration with ETHZ, HEIG-VD, IGN and Swisstopo the development of the new geodetic infrastructure for the FCC has continued over the past year. Efforts were centered on the implementation of the CERN Geodetic Reference Frame, through the construction of the primary surface geodetic network and on the improvement of the local geoid model. Additionally, desk studies on methodologies and instruments for gravity field determination and on calibration, control and test facilities of the geodetic equipment needed during construction and operation of the FCC were also carried out.

The presentation will cover the task accomplished during the past year and give an overview of the remaining challenges.

Speaker: Benjamin Weyer (CERN)

FCCweek2024_StatusGeodesy.pdf

FCCweek2024_StatusGeodesy.pptx

50 FCC installation schedule

Speaker: Sarah Agathe Fleury (CERN)

FCC Week 2024 - Sarah Fleury.pdf

FCC Week 2024 - Sarah Fleury.pptx

51 The Availability Challenge: Opportunities within the FCC-ee Operation Cycle

To reach integrated luminosity goals, the FCC-ee must be operational for minimum 80% of the scheduled 185 physics days each year. For comparison, the LHC achieved 77% in Run 2, 2016-2018. There are additional challenges in operation and maintenance of the FCC-ee due to its scale, complexity and ambitious technical objectives. Availability is therefore a significant risk to physics deliverables, and merits consideration especially in the early stage of the design process. This presentation outlines recent key findings from the FCC-ee availability study following new information from the Mid Term report and input from technical infrastructures. Contributions are as follows: (I) The baseline FCC-ee Operation Cycle is presented, including key constraints imposed by the need for energy calibration by resonant depolarisation. (II) For the first time, the relationship between availability and integrated luminosity imposed by this operation cycle is formalised and quantified in Monte Carlo simulation. (III) Updates to the RF availability model are illustrated, including estimation of the minimum redundancy required to reach luminosity targets. (IV) Compelling solutions to overcome shortcomings in the baseline FCC-ee operation cycle are discussed, and powerful opportunities for R&D are highlighted.

Speaker: Jack Heron (CERN)

WEBN3_talk.pptx

WEBN3_talk_print.pdf

12:00 Lunch

Scientific Advisory Committee: (Closed session)

Convener: Andy Parker (University of Cambridge (GB))

AGENDA SAC

Civil Engineering

Convener: Timothy Paul Watson (CERN)

52 FCC Underground Civil Engineering Update

This talk offers an overview of the sub-surface civil engineering design for the Future Circular Collider. It encompasses various topics crucial to the project's progress, including feedback from the Mid-Term Review, analysis of the associated cost and schedule impacts and ongoing studies focused on tunnel ventilation and safety. Additionally, case studies drawn from other tunnelling projects provide valuable insights and lessons learned. Moreover, it includes discussions with consultants and contractors aimed at gaining deeper technical understanding and ensuring the effective execution of the FCC construction.

Speaker: Liam Bromiley (CERN)

FCC Underground Civil Engineering Update 2024.pdf

FCC Underground Civil Engineering Update 2024.pptx

53 Progress on layouts and designs for FCC surface sites

Following the outcomes of the collaboration between CERN and Fermilab (US Department of Energy), this talk will present the progress on the design and preparation of all 8 FCC surface sites.
The presentation will discuss the various inputs considered to demonstrate the feasibility and adaptability of surface sites in accordance with technical, environmental, and urban constraints. It will also provide some thoughts for future studies on the FCC buildings.

Speaker: Antoine Mayoux (CERN)

FCC_010624_AMA_FCCWEEK24.pdf

FCC_010624_AMA_FCCWEEK24.pptx

54 Progress and planning for the Site Investigations for the FCC Feasibility Study

This presentation will recap the objectives of the Subsurface Site investigations (SSI) and the scope of the original campaign when it was released to tender in October 2023. It will discuss the results of the tender and detail the amendments to the original strategy based on these results and the availability of new geological data since 2023 and present the provisional programme for the SSI. Following this, it will describe the results that are expected from the campaign and indicate potential modifications to the baseline tunnel configurations and elevation arising from new data. Lastly, it will look at the site investigation campaigns that will follow this campaign and look at parallel studies that will be undertaken to reduce uncertainty in the design of the future FCC underground infrastructure.

Speaker: Roddy Cunningham (CERN)

FCC Week 2024 CE_Subsurface Site Investigations_RoddyCunningham_.pdf

FCC Week 2024 CE_Subsurface Site Investigations_RoddyCunningham_.pptx

FCC accelerators: FCC-ee injector incl. booster (i)

Convener: Dr Mark Palmer (BNL)

55 High-energy booster overview

Speaker: Adnan Ghribi (GANIL)

2024_06_12_high_energy_booster_overview.pdf

2024_06_12_high_energy_booster_overview.pptx

56 RF-based optimisation of the booster cycle

Speaker: Alice Lucie Vanel (CERN)

Vanel_FCC_week_2024.pdf

Vanel_FCC_week_2024.pptx

57 Booster and collider filling scheme

Speaker: Hannes Bartosik (CERN)

2024.06.11_FCCee_fillingschemes.pdf

2024.06.11_FCCee_fillingschemes.pptx

58 Injector complex: status and outlook

Speaker: Paolo Craievich (Paul Scherrer Institute (PSI))

FCCweek_2024_Craievich.pdf

FCCweek_2024_Craievich.pptx

59 Injection/extraction systems across the complex

Speaker: Sen Yue

FCC_inj_ext_complex.pdf

FCC_inj_ext_complex.pptx

Physics, Experiments and Detectors: Detector Concepts (i)

Convener: Mogens Dam (University of Copenhagen (DK))

60 Gaseous tracking review

Speaker: George Iakovidis (Brookhaven National Laboratory (US))

2024_06_10_FCC_Iakovidis gaseousTrackers.pdf

61 MAPS-based tracker developments from ITS3 towards FCCee

Speaker: Giacomo Contin (Universita e INFN Trieste (IT))

ITS3_ALICE_3_FCCWeek_2024_Contin.pdf

62 Fast timing possibilities at FCC-ee

Speaker: Matthew Gignac (University of California,Santa Cruz (US))

MGignac_FastTimingFCC.pdf

63 Opportunities for low mass mechanics/cooling for FCC-ee

Speaker: Eric Anderssen (Lawrence Berkeley National Lab (US))

20240611_FCC_Si_Detectors_ANDERSSEN.pdf

20240611_FCC_Si_Detectors_ANDERSSEN.pptx

SRF: Directions for R&D

Convener: Matthias Liepe (Cornell University)

64 FCC SRF roadmap

Speaker: Frank Gerigk (CERN)

FCC-SRF-roadmap-Frank-Gerigk.pdf

FCC-SRF-roadmap-Frank-Gerigk.pptx

65 RF Design and RF powering Scheme for FCC

Speaker: Franck Peauger (CERN)

2024_06_11-FCCweek-SRF Cavity Design and Powering schemes.pdf

2024_06_11-FCCweek-SRF Cavity Design and Powering schemes.pptx

66 SRF cavities for Z operation, 1 versus 2 cell

Speaker: Ivan Karpov (CERN)

FCC_Week_2024_IK.pdf

FCC_Week_2024_IK.pptx

FCC FS Steering Committee: (Closed session)

Convener: Fabiola Gianotti (CERN)

AGENDA SC

15:00 Coffee break

FCC accelerators: FCC-ee injector incl. booster (ii)

Convener: Sakhorn Rimjaem (Chiang Mai University)

67 Static and dynamic beam dynamic effects in the e-, common and HE-linacs

Speaker: Simona Bettoni (Paul Scherrer Institut (CH))

2024_FCCWeek_Bettoni_New.pdf

2024_FCCWeek_Bettoni_New.pptx

68 RF Design Studies of Accelerating Structures for the FCC-ee Pre-injector Complex

Speaker: Adnan Kurtulus

FCCweek_AKurtulus.pdf

FCCweek_AKurtulus.pptx

69 Positron source and capture system (HTS-solenoid vs FC options)

Speaker: Dr Iryna Chaikovska (CNRS/IJCLab)

WP3positrons_FCCweek2024.pdf

WP3positrons_FCCweek2024.pptx

70 Damping ring: status and outlook (including DR at higher energy)

Speaker: Antonio De Santis (INFN Frascati)

240611_fccweek_dr_light.pdf

71 Positron bunch and energy compressor (to/from damping ring)

Speaker: Simone Spampinati (INFN Frascati)

Spampinati_fcc week_2024.pdf

Spampinati_fcc week_2024.pptx

Physics, Experiments and Detectors: Detector Concepts (ii)

Convener: Marc-Andre Pleier (Brookhaven National Laboratory (US))

72 Review of the Silicon and SiPM-Scintillator Calorimeters

Speaker: Jeremy Mans (University of Minnesota (US))

Si_and_SiPM_Calo_FCCWeek_2024_06.pdf

73 Review of Noble-Liquid Calorimetry

Speaker: Juska Pekkanen (CERN)

allegro_fccweek24_juska_v0.pdf

74 Review of Crystal and Fibre Dual-Readout Calorimetry

Speaker: Sarah Eno (University of Maryland (US))

Sarah_Eno_dualreadout.pdf

75 Noble Liquid Endcap EM Calorimeter: Geometry and Simulation

We report on a conceptual design for a noble-liquid-based EM endcap
calorimeter, where the absorber plates and readout electrodes are
arranged in a turbine-like geometry. This design allows for
frequent shower sampling and highly granular readout, without
introducing cracks in phi. Furthermore, it can be constructed from multiple
copies of a small number of absorber and readout board designs. The implementation
of this geometry in the ALLEGRO detector simulation and initial simulation results will
be presented.

Speaker: Erich Ward Varnes (University of Arizona (US))

FCC_week_June_2024.pdf

76 Recent Progress of Inorganic Scintillators for Future HEP Calorimetry

Following the priority research directions for calorimetry documented in the DOE HEP basic research needs for instruments the Caltech HEP Crystal Lab has been actively investigating novel inorganic scintillators along the following three directions. Fast and radiation hard inorganic scintillators to face the challenge of severe radiation environment expected by future HEP experiments at hadron colliders, such as the HL‐LHC and a 10 TeV pCM collider, where radiation damage is induced by ionization dose, protons and neutrons. Ultrafast inorganic scintillators to face the challenge of unprecedented event rate expected by future HEP experiments searching for rare decays, such as Mu2e‐II, and ultrafast time of flight (TOF) system at colliders. Cost‐effective inorganic scintillators for the homogeneous hadron calorimeter (HHCAL) concept to face the challenge of both electromagnetic and jet mass resolutions required by the proposed Higgs factory. We report recent progress in all these directions, such as LuAG:Ce ceramic fibers for the RADiCAL proposal, Lu2O3:Yb ceramics for TOF and ABS:Ce and DSB:Ce glass scintillators for HHCAL and the CalVision proposal. The result of this investigation may also benefit nuclear physics experiments, GHz hard X‐ray imaging, medical imaging and homeland security applications.

Speaker: Renyuan Zhu (California Institute of Technology (US))

ryz_240611_FCC_Week_Crystal.pdf

SRF: Technology (i)

Convener: Derun Li (LBNL)

77 Potential of A15 materials for FCC SRF

Speaker: Matthias Liepe (Cornell University)

Liepe_Nb3Sn_FCC_2024.pptx

78 EIC 591 MHz SRF cavity progress

Speaker: Jiquan Guo (Thomas Jefferson National Accelerator Facility)

EIC 591 MHz SRF cavity progress Guo.pdf

EIC 591 MHz SRF cavity progress Guo.pptx

79 400 MHz cavity program at CERN (coating & surf preparation)

Speaker: Carlota Pereira Carlos (Universite de Geneve (CH))

400 MHz cavity program at CERN-FCCweek2024.pdf

400 MHz cavity program at CERN-FCCweek2024.pptx

80 First Nb3Sn coated CEBAF style quarter cryomodule?

Speaker: Anne-Marie Valente-Feliciano (Thomas Jefferson National Accelerator Facility)

FCC2024_talk_AMVF.pdf

FCC2024_talk_AMVF.pptx

Technical Infrastructure: Layout optimisation and services

Convener: Klaus Hanke (CERN)

81 Update of Integration tunnel and arcs, straight sections…

Follow up the up-to-date requirements from the different stakeholders (cooling, HVAC, electrical supply, transport, safety systems, and machine systems). The integration team classified and optimized the space which will be used in the underground infrastructure. The 3D integration models were updated with the new occupation requests on the machine tunnel and the arcs, experimental caverns, and service caverns, and all the rest support underground infrastructure.

Speaker: Fani Valchkova-Georgieva (Bulgarian Academy of Sciences (BG))

110624_FCC Week 2024_Integration update tunnel and arcs, caverns, service caverns, etc.pdf

110624_FCC Week 2024_Integration update tunnel and arcs, caverns, service caverns, etc.pptx

82 New technologies for electrical transmission and distribution in FCC

At this stage of the feasibility study of FCC, few challenges were identified, and the electrical network has a role to play in improving them.

Indeed, the study highlighted the need to use as little space as possible: on surface sites to limit the environmental impact, but underground as well to limit the civil engineering cost. In this sense, the electrical network is designed to reduce its footprint. Some improvements are developed for transmission and distribution substations, that are initially big space consumers, to reduce their size and location.

Regarding the electrical network itself, it is developed to improve the network stability and its immunity from external disturbances. The power quality needs also to be managed, for this way, some equipment needs to be installed and design all around the machine. Their size, position and technology are studied to be optimized.

The aim of this presentation is to show the progress done on the optimization of the electrical network for the FCC, using new technologies.

Speaker: Charline Marcel (CERN)

New technologies for electrical transmission and distribution - Presentation.pdf

New technologies for electrical transmission and distribution - Presentation.pptx

83 Global Optimisation

The talk provides the latest advancements in evaluating optimal powering solutions for the FCC-ee.

To achieve a global optimum which balances Capital and Operation Expenditures (CAPEX and OPEX) a holistic approach is needed. Several equipment designs such as cables, power converters, cooling and ventilation systems, magnet, and alcoves volumes are tightly related and CAPEX+OPEX compromises must be evaluated. For this purpose, a global optimization tool has been developed, integrating models from different expert groups at CERN. This tool enables the identification of optimal design trade-offs between accelerator subsystems by minimizing total expenditure.

The global optimization tool is utilized to illustrate the overall impact of selecting different number of alcoves. It provides the optimal number of alcoves based on the precision of current models.

Speaker: Byamba Wicki (CERN)

FCC_Week-2024-Global_Optimisation-20240611.pdf

FCC_Week-2024-Global_Optimisation-20240611.pptx

84 Radiation environment in the FCC-ee arcs

Speaker: Barbara Humann (CERN)

FCCWeek2024_RadiationShielding_2024_06_11.pdf

FCCWeek2024_RadiationShielding_2024_06_11.pptx

International Collaboration Board: (Closed session)

Convener: Philippe Chomaz

AGENDA ICB

FCC accelerators: FCC-ee injector incl. booster (iii)

Convener: Dr Iryna Chaikovska (CNRS/IJCLab)

85 PSI Positron Production (P-cubed) project

Speaker: Nicolas Vallis (PSI/EPFL)

Slides_FCCWeek2024.pdf

Slides_FCCWeek2024.pptx

86 Development of p-cubed and FCCee positron source targets at CERN

Speaker: Ramiro Francisco Mena Andrade

20240611_FCC-Week_2024_Positron_Source_Target.pdf

20240611_FCC-Week_2024_Positron_Source_Target.pptx

87 Positron source design and experiment for FCC, SuperKEKB and ILC

Intense positron source is one of a crucial component for future electron positron colliders. Although each project, FCC, ILC, CLIC, CEPC, C3 uses many different technologies for main accelerator, requirement and present design of the positron source are very similar. Recently, under the support of CHART program and FCC feasibility study, positron source design for the FCC has progress rapidly. At the same time, design work and prototype manufacturing of positron source for ILC started using the five years grant from MEXT since 2023. To maximize synergy effect, we have strengthen the collaboration and mutual discussion.
In addition, experimental works are very important to validate the design and simulation for future positron source. The positron source for the SuperKEKB is the only one machine which can provide such opportunity in the world now.
In this talk, present status and recent progress of the positron source will be summarized along with recent joint experiment at KEK using positron source for SuperKEKB.

Speaker: Yoshinori Enomoto (KEK)

FCCweek2024-v2.pdf

FCCweek2024-v2.pptx

88 Polarized injector for CEPC

Speaker: Zhe Duan (IHEP)

Polarized_injector_for_CEPC.pdf

Polarized_injector_for_CEPC.pptx

Physics, Experiments and Detectors: Detector Concepts (iii)

Convener: Zeynep Demiragli (Boston University (US))

89 Full simulation status CLD/ILD

Speaker: Frank-Dieter Gaede (Deutsches Elektronen-Synchrotron (DE))

gaede_cldild_fullsim.pdf

90 Full simulation status for IDEA detector concept for FCC-ee

Speakers: Mahmoud Ali, Mahmoud Ali (FCC)

IDEA FULL-SIM Status.pdf

91 Full simulation status ALLEGRO

Speaker: Brieuc Francois (CERN)

20240611_fullSim_status_ALLEGRO_Brieuc_Francois_FCCweek_SanFrancisco.pdf

92 Optimization of Si tracking systems

The CERN proposed $e^+e^-$ Future Circular Collider (FCC-ee) is designed as an electroweak, flavour, Higgs, and top factory with unprecedented luminosities. Many measurements at the FCC-ee will rely on the precise determination of the vertices, measured by dedicated vertex detectors, and the Silicon Wrapper at about two meters in radius, improving momentum resolution, providing precise angular acceptance definition, with the additional possibility of timing information.

This contribution discusses the capabilities of the IDEA tracking systems, using DD4hep full simulation, and an optimized layout of the Silicon Wrapper. We will further present a possible layout beyond this baseline design, introducing a novel concept for an ultra-light vertex detector using curved wafer-scale MAPS, and discuss the overall optimization.

Speaker: Armin Ilg (University of Zurich)

Silicon tracker optimisation_Armin Ilg.pdf

93 TDAQ Occupancy studies at FCC-ee

Speaker: Armin Ilg (University of Zurich)

Public event

What's Left to Discover? Our Unknown Universe

Date: Tuesday 11th June 2024
Time: 19:00 to 21:00 PDT [doors open at 18:30]
Location: Exploratorium, Kanbar Forum

https://fccweek2024.web.cern.ch/PublicEvent.html

Convener: Soren Prestemon

Wednesday 12 June

08:00 Welcome coffee

FCC accelerators: Collective Effects

Convener: John Byrd (Argonne National Laboratory)

94 FCC-ee single beam collective effects

Speaker: Mauro Migliorati (Sapienza Universita e INFN, Roma I (IT))

2024_06_12_FCC-IS_week.pdf

2024_06_12_FCC-IS_week.pptx

95 Collective effects in the high energy booster

Speaker: Adnan Ghribi (GANIL)

pres_ghribi_fccweek2024.pdf

96 Xsuite simulations of beam-beam effects with impedance contribution

Speaker: Roxana Soos (Université Paris-Saclay (FR))

FCC_week2024_RS.pdf

FCC_week2024_RS.pptx

97 Transverse feedback options for FCC

Speaker: Dmitry Teytelman (Dimtel, Inc.)

dt_transverse_feedback_20240612.pdf

98 Electron Cloud studies for the FCC-ee

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

2024_06_12_FCC_week.pdf

2024_06_12_FCC_week.pptx

Physics, Experiments and Detectors: Detector Requirements (i)

Convener: Mike Hance (UC Santa Cruz)

99 Introductory talk: requirements for Z and Higgs program

Speaker: Michele Selvaggi (CERN)

Detector Requirements for Z and Higgs.pdf

100 Vertexing options at FCC-ee

Speaker: Lars Rohrig (Technische Universitaet Dortmund (DE))

FCC_SanFrancisco_Roehrig.pdf

101 Precision tracking, including measurement of displaced tracks and muons at FCC-ee

Speaker: Nicola De Filippis (Politecnico/INFN Bari (IT))

DeFilippis_TrackingRequirement@FCC-ee.pdf

102 Measuring taus at FCC-ee

Speaker: Marcin Chrzaszcz (Polish Academy of Sciences (PL))

tau_FCC.pdf

tau_FCC.pptx

103 Flavor Tagging

Speaker: Dr Andrea Sciandra (Brookhaven National Laboratory (US))

ASciandra_FTAG_FCCWeek_6_12_24.pdf

Sustainability and impact generation

Convener: Dr Florian Sonnemann (CERN)

104 Results of the socio-economic impact study

Speakers: Dr Emanuela Sirtori (CSIL), Johannes Gutleber (CERN)

FCC-2405310930-JGU_Socio_Economic_Impact_Results.pdf

FCC-2405310930-JGU_Socio_Economic_Impact_Results.pptx

105 Regional opportunities in Geneva, Ain and Haute-Savoie

Speaker: Leslie Alix (CERN / CNRS (FR))

FCC-2405230900-LAL-Presentation_Territorial_benefits-V0006.pdf

FCC-2405230900-LAL-Presentation_Territorial_benefits-V0006.pdf

FCC-2405230900-LAL-Presentation_Territorial_benefits-V0006.pptx

106 Waste heat supply opportunities

Speaker: Alain GUIAVARCH

presentation_BURGEAP-FCCWeek-V0004.pdf

presentation_BURGEAP-FCCWeek-V0004.pptx

107 Results of the pole analysis study

Speaker: Leslie Alix (CERN / CNRS (FR))

FCC-2405230900-LAL-Presentation_pole_study-FCC_Week_2024-V0004.pdf

FCC-2405230900-LAL-Presentation_pole_study-FCC_Week_2024-V0004.pptx

10:00 Coffee break

FCC accelerators: FCC-ee optics correction & tuning

Convener: Prof. Mark James Boland (University of Saskatchewan (CA))

108 Status of optics correction studies

Speaker: Rogelio Tomas Garcia (CERN)

Slides

109 EIC Dynamic aperture optimization & implications for FCC

Speaker: Yunhai Cai (SLAC National Accelerator Laboratory)

Dynamic_Aperture.pdf

110 Beam-based alignment simulations

Speaker: Xiaobiao Huang (SLAC National Accelerator Laboratory)

BBA_simulations_for_FCCee.pdf

111 Update on the vibration work for the FCC-ee

Speaker: Freddy Albert Poirier (Centre National de la Recherche Scientifique (FR))

FCCweek_vibrations_FPoirier_v2.pdf

Physics, Experiments and Detectors: Software

Convener: David Lange (Princeton University (US))

112 New functionalities in FCC core software

Speaker: Juan Miguel Carceller (CERN)

20240612-key4hep-carceller.pdf

113 Experience with FCC software

Speaker: Scott Snyder (Brookhaven National Laboratory (US))

2024-06-12-fccsw.pdf

114 Event Visualization and FCC Analyses cheatsheet

Speaker: Juraj Smiesko (CERN)

Event Visualization and FCCAnalyses Cheatsheet

Event Visualization and FCCAnalyses Cheatsheet.pdf

fccee_larCalo_simAndDigi.edm4hep.json

p8_ee_ZH_ecm240_edm4hep.edm4hep.json

115 Computing resource needs for the FSR and beyond

Speaker: Gerardo Ganis (CERN)

FCC-SnC-Resources-SanFrancisco-2024

116 GeoModel Toolkit for FCC simulation

Speaker: Vakho Tsulaia (Lawrence Berkeley National Lab. (US))

GeoModelFCC.pdf

Sustainability and impact generation

Convener: Dr Florian Sonnemann (CERN)

117 Greenhouse gas production study of the construction

Speaker: Dasaraden Mauree (WSP | BG Ingénieurs Conseils SA)

100196.09_FCC_Carbon_budget.pdf

100196.09_FCC_Carbon_budget.pptx

118 The OpenSky Lab for innovating excavation materials re-use

Speaker: Christiana Staudinger (University of Natural Resources and Life Sciences (BOKU) (AT))

FCC-2405240000-CST_OpenSkyLaboratory_FCCWeek2024.pdf

FCC-2405240000-CST_OpenSkyLaboratory_FCCWeek2024.pptx

119 Status and progress of environment analysis and report

Speaker: Delphine Suzanne Stagnara

FCC-240612-SEM-FCCmeeting_CERN_SanFrancisco2024-V0005.pdf

FCC-240612-SEM-FCCmeeting_CERN_SanFrancisco2024-V0005.pptx

120 Harnessing Big Science: Expanding CERN's global impact through strategic policies

Speakers: Gabriele Piazza (LSE), Johannes Gutleber (CERN), Prof. Riccardo Crescenzi (LSE)

24-05-25 LSE Policy recommendations presentation V0100.pdf

24-05-25 LSE Policy recommendations presentation V0100.pptx

12:00 Lunch

Accelerator technical design: Magnets

Convener: Paolo Ferracin (Lawrence Berkeley National Laboratory)

121 Collider magnet design status

We will present the update of the magnet parameters resulting from the global optimization of the magnet circuits carried out this year in collaboration with our colleagues of the CERN power converter group. We will show how the magnet cross sections have consequently evolved and list the next steps for the magnet development until the end of the feasibility study and beyond.

Speakers: Carl Jaermyr Eriksson (CERN), Jeremie Bauche (CERN)

2024-06-12_FCC_week_Collider_magnets.pdf

2024-06-12_FCC_week_Collider_magnets.pptx

122 Booster magnet design status

Update on the design of the high energy booster magnets. We will cover:
- developments on the low field dipole, a key factor in defining the injection energy for the booster.
- parameters and cross sections of magnets to meet the requirements of the v.24 HEB optics baseline.
- early results factoring the global optimisation in collaboration with CERN power converter group.

Speakers: Halil Deveci, Luke Von Freeden (CERN)

20240612_FCC_week_booster.pdf

20240612_FCC_week_booster.pptx

123 Magnet Circuits

The talk addresses different aspects of magnet powering circuit configuration of the FCCee.

The number of circuits has a big impact on the performance of the beam (controllability in primis); however, the greater the number of circuits, the higher the total cost.
Accelerator controllability, optics granularity and availability specifications directly impact the number of circuits and the performance requirements of the power converters powering the magnets.

This presentation showcases these parameters and their impact on the total expenditure.

Speaker: Byamba Wicki (CERN)

FCC_Week-2024-Circuit_Analysis-20240612.pdf

FCC_Week-2024-Circuit_Analysis-20240612.pptx

124 Status of the Arc Half Cell Mock-up project

The FCC-ee arc half-cell mock-up project is continuing its engineering design phase and entering the manufacturing, installation, and testing phase. The production of a 1:1 scale mock-up has been launched and the installation of the first version is scheduled for Q1 2025. The main idea is to have a modular mock-up that can accommodate systems from other teams: robots, magnets, safety systems, etc. Meanwhile, design and optimisation studies are progressing on the supporting structures of the booster and collider, and on the interfaces between the main systems. The project team is also developing a Short Straight Section demonstrator, combining experimental measurements and simulations to assess the vibrational contribution of the various elements such as the feet, the support, the magnets, etc.

Speaker: Ms Audrey Piccini (Junior Fellow)

FCC_week_AHCM_status_12062024.pdf

FCC_week_AHCM_status_12062024.pptx

125 Cold test results of the final focus magnet prototype

Speaker: m Koratzinos (Paul Scherrer Institute (CH))

FF_quad_proto_San_Francisco.pdf

FF_quad_proto_San_Francisco.pptx

Joint effort PED & accelerators: Machine Detector Interface (i)

Convener: Fabrizio Palla (Universita & INFN Pisa (IT))

126 MDI Overview

Speaker: Manuela Boscolo (INFN e Laboratori Nazionali di Frascati (IT))

240612_MDI_Mboscolo_FCC_WEEK24.pdf

127 Mechanical model of the MDI

Speaker: Francesco Fransesini (INFN e Laboratori Nazionali di Frascati (IT))

2024-06-12_FCCweek2024_Fransesini.pdf

2024-06-12_FCCweek2024_Fransesini.pptx

128 Optimization of the FCC-ee IR beam pipe elements for minimum of the wake field energy loss responsible for the heat load.

We present the results of the wake field analyses for different geometries of the IR beam pipe elements like bellows, BPMs, SR mask including beam pipe shape. We found a possibility how to decrease and capture wake fields generated by colliding beams in the interaction region. This optimization study will be useful for the FCC-ee IR beam pipe design.

Speaker: Alexander Novokhatski (SLAC National Accelerator Laboratory (US))

Novokhatski_FCC_IR_Wakes_06_12_24.pdf

129 IR magnet system

Speaker: John Theodore Seeman (SLAC National Accelerator Laboratory)

Seeman FCC Week IR Magnet System 2024Jun09.pdf

Seeman FCC Week IR Magnet System 2024Jun09.pptx

130 Radiation dose from Fluka simulation in the MDI area

Speaker: Alessandro Frasca (University of Liverpool (GB))

FLUKA_studies_for_the_FCC-ee_MDI.pdf

FLUKA_studies_for_the_FCC-ee_MDI.pptx

SRF: Technology (ii)

Convener: Kellen McGee (Fermi National Accelerator Laboratory)

131 LCLS-II Commissioning

Speaker: Dan Gonnella (SLAC National Accelerator Laboratory)

gonnella_lcls2_commissioning.pdf

gonnella_lcls2_commissioning.pptx

132 High Q0 800 MHz cavity R&D for FCC

800 MHz bulk niobium superconducting RF cavities are a fundamental, and sizeable, component of the FCC machine at all operating points. In the Booster, for Z, W, H, and ttbar operating points, there are 24, 56, 112, and 600 of these cavities respectively, with an additional 488 in the collider ring for ttbar operation. The FCC cavity performance specifications currently sit at the upper limit of what present-day techniques can achieve, and still incur a high RF power budget, in addition to generating substantial static and dynamic heat loads per cavity, driving up cryogenic costs. In order to deliver the most cost-effective, and thereby feasible version of the FCC, R&D efforts on 800 MHz RF cavities have begun, focusing on advanced surface treatments on 5-cell and single-cell 800 MHz prototypes. We report the first cold test results of these prototypes, and propose a course for future development.

Speaker: Kellen McGee (Fermi National Accelerator Laboratory)

133 SRF system integration - cryomodule functional specifications and design of the 400MHz

Speaker: Karin Canderan (CERN)

FCCWeek2024_KC_CMSpecs.pdf

FCCWeek2024_KC_CMSpecs.pptx

134 Preliminary Design of FCC 800MHz Cryomodule at Fermilab

Speaker: Donato Passarelli

FCC 800MHz CM design_FCC week_DPassarelli.pdf

FCC 800MHz CM design_FCC week_DPassarelli.pptx

15:00 Coffee break

US plenary session

Convener: Julia Lynne Gonski (SLAC National Accelerator Laboratory (US))

135 EIC project - accelerator

Speakers: Andrei Seryi (Jefferson Lab), Sergei Nagaitsev

FCC-EIC_June12_2024_SN_AS2.pdf

FCC-EIC_June12_2024_SN_AS2.pptx

136 EIC - detector

Speaker: Zhenyu Ye (Lawrence Berkeley National Lab. (US))

yezhenyu_FCC_20240612_v2.pdf

137 Electronics & new technologies

Speaker: Pieter Breur

240612 Breur FCC plenary talk on instrumentation.pdf

138 Neutrino complex/upgrades

Speaker: Jeffrey Scott Eldred (Fermi National Accelerator Lab. (US))

Eldred_FCC2023_Plenary 1.pptx

139 Overflow

Early Career Researchers

Convener: Matthew Daniel Citron (University of California Davis (US))

Agenda ECR session

FCC-Electron-Ion Collider collaboration: (Closed session)

Convener: Frank Zimmermann (CERN)

AGENDA EIC

19:00 Conference dinner

Thursday 13 June

08:00 Welcome coffee

FCC accelerators: FCC-ee code development and other themes

Convener: Yunhai Cai

140 Status, results and plans for xsuite

Speaker: Giovanni Iadarola (CERN)

009_Xsuite_fcc_week.pdf

009_Xsuite_fcc_week.pptx

141 New simulation tools for beam-beam collisions at the interaction point

Speaker: Arianna Formenti (LBNL)

fccweek2024.pdf

fccweek2024.pptx

142 Bmad for the FCC, and a future Bmad Julia for Machine Learning

Speaker: Georg Hoffstaetter de Torquat (Cornell University)

Hofffstaetter_Bmad-EIC.pdf

143 SuperKEKB beam diagnostics & fast losses

Speaker: Hitomi Ikeda (KEK)

20240613SBL-FCCweek.pdf

20240613SBL-FCCweek.pptx

144 Update on the resistive wall code development

Speaker: Ali Rajabi (DESY)

VACI_FCCweek2024.pdf

VACI_FCCweek2024.pptx

Governance (closed session): HFM for FCC-hh

Convener: Bernhard Auchmann (PSI/CERN)

Physics, Experiments and Detectors: Detector Requirements (ii)

Convener: Junjie Zhu (University of Michigan (US))

145 Introduction to requirements for BSM program

Speaker: Louise Skinnari (Northeastern University (US))

skinnari_FCCWeek2024.pdf

146 Measuring Electrons & Photons with high precision

Speaker: Chris Tully (Princeton University (US))

FCCeeECALTullySFO2024main.pdf

FCCeeECALTullySFO2024main.pptx

147 PID, strange tagging, and timing at FCC-ee

Speaker: Xunwu Zuo (KIT - Karlsruhe Institute of Technology (DE))

PID, strange tagging, and timing 2024.06.13.pdf

148 Measuring Jets and Mass with precision

Speaker: Victor Daniel Elvira (Fermi National Accelerator Lab. (US))

DE-HadHermResol-FCC24-v5.pdf

149 ML for detector geometry and reco optimization

Speaker: Dolores Garcia (CERN)

FCC-week-2024.pptx-2.pdf

Technical Infrastructure: RF and Cryogenics

Convener: Frank Gerigk (CERN)

150 RF General Layout and integration

Following up the updates on RF section studies, where we have a new design of the 400MHz and 800 MHz cryogenics modules. The integration studies are considering boundaries in term of space limitations and design requirements, such as underground infrastructures (access shaft, connection tunnels, etc.), straight section length, cryogenics modules length, general services (electrical, cooling and ventilation), transport reserved volumes. All systems shall fit in the 5.5m inner diameter tunnel.

Speaker: Fani Valchkova-Georgieva (Bulgarian Academy of Sciences (BG))

130624 FCC Week 2024_ Integration of FCC_ee RF Sections.pdf

130624 FCC Week 2024_ Integration of FCC_ee RF Sections.pptx

151 Update of RF layout and cryomodules

Speaker: Vittorio Parma (CERN)

FCCee SRF talk layout and integration FCC week SF 2024.pdf

FCCee SRF talk layout and integration FCC week SF 2024.pptx

152 Parametric studies on FCC-ee cryogenic design

Speaker: Boyan-Kaloyanov Naydenov Popov (CERN)

Naydenov-Parametric-Studies-Cryogenics-FCC-ee-240608.pdf

Naydenov-Parametric-Studies-Cryogenics-FCC-ee-240608.pptx

153 Powering of the FCC-ee RF System

The RF systems of the FCC-ee are expected to be the primary consumers of power and energy. With an estimated power consumption exceeding 100 MW, it is crucial to design an efficient and reliable powering system that can deliver power from the AC network to the klystron gallery.
A critical component of the RF powering system is the main power converter. The use of a centralized high-voltage Modular Multilevel Converter (MMC) as the main conversion device is being analysed for this purpose. This converter topology offers high efficiency and reliability, making it a standard in the industry. The converter's topology, operation, and an update of the volume and cost estimation will be presented.
In terms of distribution, a single-bus approach is proposed. To meet the individual control and protection requirements of each klystron, a strategy based on trimming converters and series switches will be presented, providing details on the control strategy. Additionally, the powering of the solid-state RF amplifiers, if needed, will be discussed, highlighting the main challenges of supplying this type of amplifier.
Finally, the presentation will provide a cost and volume estimation of the proposed powering strategy, introducing several proposals for optimizing the system to minimize overall capital and operational expenditures (CAPEX and OPEX).

Speaker: Manuel Colmenero Moratalla (CERN)

FCC_Week_2024_RF_pdf.pdf

FCC_Week_2024_RF.pptx

10:00 Coffee break

Accelerator technical design: Injection & instrumentation

Convener: John D Fox (Stanford University (US))

154 Septa hardware systems

The FCC collider and injection complex call for a diverse set of injection and extraction septa. This presentation will summarise the principal technological choices for each of them, and will derive the implications from the technology choices on the required infrastructure. For the more challenging systems, alternative approaches will be scrutinised and areas where further development is needed will be identified.

Speaker: Jan Borburgh (CERN)

FCCee Booster and Collider septa and sepatator challenges_final.pdf

FCCee Booster and Collider septa and sepatator challenges_final.pptx

155 Overview of and Challenges for the FCC-ee Fast Pulsed Beam Transfer Systems

For injection, extraction and beam disposal fast pulsed systems are needed throughout the FCC-ee complex. This presentation outlines the various kicker systems needed to transport the lepton beams from the electron source up to the collider dump system. The individual system requirements are presented, and the choice of design parameters and technology options for both beamline elements and pulse generators are discussed. Potential challenges are highlighted, together with areas for R&D and implications on infrastructure.

Speaker: Giorgia Favia (CERN)

FCCee_Kickers.pdf

FCCee_Kickers.pptx

156 Studies on an electro-optical longitudinal bunch profile monitor for FCC-ee

Speaker: Micha Reißig (KIT Karlsruhe)

2024-06-13_FCCweek_EOforFCCee_MR.pdf

157 Transverse beam size monitoring in FCC

Speaker: Daniele Butti

fccweek_2024_transverse_butti.pdf

fccweek_2024_transverse_butti.pptx

158 BPM design studies

Speaker: Emily Rose Howling (Univ. of Oxford (GB))

Final_FCCweek24_BPMs_EHowling_1306.pdf

Final_FCCweek24_BPMs_EHowling_1306.pptx

FCC accelerators: FCC-hh design

Convener: Giorgio Apollinari (Fermi National Accelerator Lab. (US))

159 FCC-hh overview, main parameters & hh lattice

Speaker: Gustavo Perez Segurana (CERN)

2024.06.13_FCCWeek24_FCC-hh_Gustavo-Perez.pdf

2024.06.13_FCCWeek24_FCC-hh_Gustavo-Perez.pptx

160 FCC injection lines for ee and hh

Speaker: Wolfgang Bartmann (CERN)

fccWeek24_injLines.pdf

161 FCC-hh collimation – brief status

Speaker: Dr Roderik Bruce (CERN)

2024.06.13--FCC_week_FCC-hh_collimation.pdf

2024.06.13--FCC_week_FCC-hh_collimation.pptx

162 High field magnet efforts at NHMFL, BNL & industry

Speaker: Kathleen Amm (National High Magnetic Field Laboratory)

FCC week high field magnets 2024.pdf

FCC week high field magnets 2024.pdf

FCC week high field magnets 2024.pptx

Joint effort PED & accelerators: Machine Detector Interface (ii)

Convener: Manuela Boscolo (INFN e Laboratori Nazionali di Frascati (IT))

163 Vertex detector design and integration

Speaker: Fabrizio Palla (Universita & INFN Pisa (IT))

FCC Week 2024 SFO.pdf

FCC Week 2024 SFO.pptx

164 Status and Perspectives for FCC-ee Detector Background Studies

The Future Circular Collider electron-positron (FCC-ee) is a proposed high-energy lepton collider that aims to reach unprecedented precision in the measurements of fundamental particles. However, several beam related processes produce particles in the Machine-Detector Interface (MDI) region, which can adversely affect the measurements' accuracy. This contribution presents a study of the beam-induced backgrounds at FCC-ee. The study uses the turnkey software Key4HEP to estimate the occupancy levels induced by beam-beam interactions, beam losses and Synchrotron Radiation in several sub-detectors of CLD, IDEA and ALLEGRO detector concepts.

Speaker: Andrea Ciarma (INFN e Laboratori Nazionali di Frascati (IT))

FCCWeek24_ciarma.pdf

165 Synchrotron Radiation background studies

Speaker: Kevin Daniel Joel Andre (CERN)

FCC week 2024.pdf

166 Beam-gas beam losses and MDI collimators

Speaker: Giacomo Broggi (CERN, Sapienza Università di Roma e INFN Laboratori Nazionali di Frascati)

FCCee_beam_gas.pdf

FCCee_beam_gas.pptx

167 A new framework for synchrotron radiation studies in the EIC experiment

The Electron-Ion Collider (EIC) is an advanced particle accelerator designed to explore matter's fundamental structure at the subatomic scale. It collides high-energy polarized electron beams with ions, like protons or lead nuclei, enabling scientists to scrutinize quark and gluon interactions. The EIC's unique setup provides a platform to study these interactions within atomic nuclei, shedding light on nuclear matter and extreme conditions in the universe. Collaboration among multiple institutions drives the construction and operation of the EIC, with the overarching goal of advancing our understanding of the fundamental forces and particles.

The EIC plans to operate at high beam currents and luminosities to probe dense gluon systems and unravel the origins of nucleon mass and spin. However, this strategy increases beam-induced background rates in the ePIC spectrometer located at the interaction point. Notably, synchronous radiation (SR) emitted from the electron beam is a significant source that negatively impacts detector longevity and physics analysis performance.

This talk describes the Monte-Carlo simulation method for the SR background in the ePIC setup at the EIC. It introduces a new framework to accurately model X-ray photons' specular and diffuse reflection on vacuum-metal interfaces. In addition, the framework utilizes the extensive functionalities of Geant4 classes for particle-matter interaction studies. Moreover, the talk presents updated estimates of SR rates in various ePIC subsystems and proposes countermeasures to protect sensitive electronics, ensuring a stable detector operation.

Speaker: Andrii Natochii (Brookhaven National Laboratory)

FCC_Week_2024_NATOCHII.pdf

Technical Infrastructure: Utilities

Convener: Jean-Paul Burnet (CERN)

168 Status of the FCC cryogenics feasibiliy study

Speaker: Laurent Delprat (CERN)

Delprat_2024_FCCWeek_Cryogenic_Layout_final.pdf

Delprat_2024_FCCWeek_Cryogenic_Layout_final.pptx

169 Cooling of the FCC-ee and FCC-hh: update and sustainability aspects.

The water cooling system of the FCC is in charge of extracting the heat produced at magnets, cryogenic systems, absorbers, electronics, etc. This presentation provides an overview of the current status of the cooling systems, covering aspects such as thermal load management, thermal load variation over the year and for the different stages of the FCC-ee. The presentation covers also opportunities to reduce water consumption and options to optimize fatal heat utilization. Finally, the evacuation of water with high levels of TDS for the current layout of the FCC is addressed.

Speaker: Dr Guillermo Peon (CERN)

FCC-week-2024-cooling13-06-2024-2.pdf

FCC-week-2024-cooling13-06-2024-2.pptx

170 Ventilation strategy for the FCC

The ventilation system of the FCC includes the supply, treatment, and extraction of air in the accelerator complex, including the Arc Tunnel, Alcoves and the caverns and galleries in the Experimental, RF and Technical Points. The air supplied at the FCC must meet safety, humidity and temperature requirements, among others. The ventilation system is also used to extract part of the thermal load produced by the different machines in the underground facilities.

Several working modes are contemplated depending on the conditions of operation of the accelerator, including cases of emergency and access of the personnel for maintenance work. Further key points include air recycling, control implementation of the system and the transitory regime between modes. This presentation addresses these and other topics and provides as an in-depth look at the ventilation system for the FCC.

Speaker: Inigo Martin Melero (CERN)

Ventilation_FCCWeek_2024.pdf

Ventilation_FCCWeek_2024.pptx

171 FCC electrical grid and infrastructure: update

Starting from the status presented at the FCC Week of 2023, the network concept has now progressed and been updated on the latest users’ requirements and the latest outcomes of the studies.
Some axis of optimization have been explored and analysed to find the optimum result for the high voltage transmission level and the location of the main substations; the operational scenarios and degraded modes for the electrical grid have been defined to allow in most of the circumstances the continuity of FCC operations; it has been developed the concept of the secured network that will supply all the safety-related systems in surface and overall underground and in the tunnel.
Furthermore, it has been defined how to re-use one of the 400 kV connections to RTE grid already available at CERN to supply in future the new facility, and the feasibility study for the installation of a high voltage line in the tunnel is coming to a positive end.
Finally, the updated setup of the network has been tested with the latest load forecast for FCC-hh, to update the projection of the use of the main infrastructure for the future machine.
The aim of this presentation is to provide the update of the studies on the electrical grid of FCC, focusing on the main items mentioned here above.

Speaker: Mario Parodi (CERN)

FCC electrical grid and infrastructure update.pdf

FCC electrical grid and infrastructure update.pptx

172 DC Networks for the Powering of the FCC

In recent years, with the advent of power electronics, DC networks have emerged as a promising solution for the distribution of electrical energy. They offer advantages in terms of efficiency, controllability, volume reduction, and integration of energy storage. Given the specific needs of the FCC, DC networks could be utilized to supply power to specific machine components.
On a larger scale, DC networks could facilitate power transfer around the machine's circumference, reducing the required cable size and enhancing control over active and reactive power. However, it is essential to compare DC networks with other AC technologies, such as the Unified Power Flow Controller and the Static Var Compensator, to fully grasp their benefits. At the access point level, DC networks could minimize the number of conversion stages, thereby increasing overall efficiency. Furthermore, the use of high-frequency transformers and DC cables with lower voltage drops could help reduce the required volume.
This presentation will explore the available technologies for constructing such networks and address the primary challenges involved in building the grid. It will also present several proposals for implementing this technology in the FCC, along with an analysis of the advantages and disadvantages of its use.

Speaker: Manuel Colmenero Moratalla (CERN)

FCC_Week_2023_DC_Networks.pdf

FCC_Week_2023_DC_Networks.pptx

12:00 Lunch

Scientific Advisory Committee: (closed session)

Convener: Andy Parker (University of Cambridge (GB))

AGENDA SAC

AIML mini workshop

Convener: Ben Nachman (Lawrence Berkeley National Lab. (US))

173 Introduction

Speaker: Ben Nachman (Lawrence Berkeley National Lab. (US))

FCCAIML2024.pdf

174 Accelerator Design/Control

Speaker: Auralee Edelen

20240613_Edelen_FCC.pdf

175 Accelerator Design/Control

Speaker: Remi Lehe (Lawrence Berkeley National Laboratory)

FCC_AIML.pdf

FCC_AIML.pptx

176 Detector design

Speaker: Dr Karthik Suresh (College of William and Mary)

AID2E FCC Week 2024.pdf

Accelerator technical design: Vacuum and radiations

Convener: John Theodore Seeman (SLAC National Accelerator Laboratory)

177 Vacuum design status

Speakers: Cedric Garion (CERN), Roberto Kersevan (CERN)

FCC_Vacuum_CG.pdf

FCC_Vacuum_CG.pptx

178 Synchrotron radiation absorber design

Speaker: Marco Morrone (CERN)

FCC_week_2024.pdf

FCC_week_2024.pptx

179 Radiation and shielding in the FCC-ee arcs

Speaker: Anton Lechner (CERN)

FCCee_RadShield_FCCWeek2024_13062024_v0.pdf

FCC accelerators: High-Field Magnets for FCC-hh (i)

Convener: Soren Prestemon

180 HL-LHC MQXF results and lessons learnt

Speaker: Paolo Ferracin

2024_06_13_FCC_MQXF_final.pdf

2024_06_13_FCC_MQXF_final.pptx

181 LTS option for FCC-hh and the HFM program

Speaker: Dr Ezio Todesco (CERN)

2024_06_HFM_FCC.pdf

2024_06_HFM_FCC.pptx

182 HTS option for FCC-hh and the HFM program

Speaker: Bernhard Auchmann (PSI/CERN)

240613_HTS_HFM.pdf

240613_HTS_HFM.pptx

Joint effort PED & accelerators: EPOL (i)

Convener: Guy Wilkinson (University of Oxford (GB))

183 Introduction and overview

Speaker: Guy Wilkinson (University of Oxford (GB))

SFO_EPOL_Wilkinson.pdf

184 Polarized positron production

Speaker: Joseph Grames (Jefferson Lab)

FCC24_Grames_Final.pdf

FCC24_Grames_Final.pptx

185 Experiments at existing facilities

Speaker: Jacqueline Keintzel (CERN)

20240613_Keintzel_KARAMeasurements_FCCWeek.pdf

186 The EIC polarimeter, and lessons for the FCC

Speaker: Dave Gaskell (Thomas Jefferson National Accelerator Facility)

fcc_eic_polarimetry_june2024.pdf

15:00 Coffee break

AIML mini workshop

Convener: Ben Nachman (Lawrence Berkeley National Lab. (US))

187 Fast inference

Speaker: Elham E Khoda (University of Washington (US))

elham_fcc2024.pdf

188 Data Analysis

Speaker: Dennis Noll (Lawrence Berkeley National Lab (US))

240613_noll-ml_in_hep.pdf

189 Google GenAI demo

Speaker: Dustin Sell (Google)

Accelerator technical design: Beam Intercepting devices

Convener: Andrei Seryi (Jefferson Lab)

190 Beamstrahlung dump concepts

Speaker: Dr Marco Calviani (CERN)

MCa__beamstrahlung_dump_FCCweek2024_June2024.pdf

MCa__beamstrahlung_dump_FCCweek2024_June2024.pptx

191 Beamstrahlung monitor

Speaker: Dr Dmitri Liventsev (Wayne State University)

240613-FCCWeek-liventsev.pdf

192 Requirements for collimation system and R&D paths

Speaker: Antonio Perillo Marcone (CERN)

APM_Collimators_FCCweek2024_June2024.pptx

193 Overview of the FCC-ee alignment and monitoring study

The 91km long FCC-ee machine raises major challenges in terms of alignment. Size, location, design, manufacturing, and requirements are aspects increasing the difficulty of the alignment process. The effort will also need to be consistent in time, as the installation and initial alignment are only the very beginning of the surveyor’s duty. Monitoring and readjustment represent the major part of the challenge, as thousands of components will need to be followed carefully and regularly in a brand new tunnel. This talk will address these points, highlighting the main difficulties and angles chosen to tackle these challenges. Specific parts will also be covered, like the straight sections, the interaction regions, and the machine-detector interfaces.

Speaker: Leonard Watrelot

Overview of the FCC-ee alignment and monitoring study (1).pdf

Overview of the FCC-ee alignment and monitoring study (1).pptx

FCC accelerators: High-Field Magnets for FCC-hh (ii)

Convener: Attilio Milanese (CERN)

194 US Magnet Development Program and synergies with FCC-hh

Speaker: Soren Prestemon (Lawrence Berkeley National Laboratory)

US Magnet Development Program and synergies with FCC-hh-v2.pdf

US Magnet Development Program and synergies with FCC-hh-v3.pdf

US Magnet Development Program and synergies with FCC-hh-v3.pptx

195 Magnet protection considerations for FCC-hh

Speaker: Dr Emmanuele Ravaioli (CERN)

FCCweek_QuenchProtection_20240614_Ravaioli.pdf

FCCweek_QuenchProtection_20240614_Ravaioli.pptx

196 Conductor challenges for FCC-hh

Speaker: Lance Cooley (National High Magnetic Field Laboratory)

Conductor challenges for FCC-hh.pdf

Conductor challenges for FCC-hh.pptx

Joint effort PED & accelerators: EPOL (ii)

Convener: Jacqueline Keintzel (CERN)

197 Simulation polarization studies at the FCC

Speaker: Yi Wu (EPFL - Ecole Polytechnique Federale Lausanne (CH))

2024 FCC week.pdf

198 Polarized electrons at the EIC, and lessons for the FCC

Speaker: Georg Hoffstaetter de Torquat (Cornell University)

Hofffstaetter_Polarization-EIC.pdf

199 The FCC polarimeter

Speaker: Dr Robert Kieffer (CERN)

2024_06_13_Polarimeter_FCCweek_p.pdf

2024_06_13_Polarimeter_FCCweek_p.pptx

200 First thoughts on the FCC depolarizer

Speaker: Wolfgang Hofle (CERN)

Depolarizer_v4b.pdf

Depolarizer_v4b.pptx

201 Lessons from LEP, and final steps towards the Final Report of the Feasibility Study

Speaker: Eric Torrence (University of Oregon (US))

epol_torrence.pdf

Physics, Experiments and Detectors: Detector Concepts (iv)

Convener: Carl Haber (Lawrence Berkeley National Lab. (US))

202 The Silicon Vertex Tracker of the ePIC Detector at the Electron-Ion Collider

Experiments at the future Electron-Ion Collider (EIC) pose stringent requirements on the tracking system for the measurement of the scattered electron and charged particles produced in the collision, as well as the position of the collision point and any decay vertices of hadrons containing heavy quarks. Monolithic Active Pixel Sensors (MAPS) offer the possibility of high granularity in combination with low power consumption and low mass, making them ideally suited for the inner tracker of the EIC detector(s). In this talk, we will discuss the configuration optimizations, selected physics performance metrics, and associated R&D towards the ePIC Silicon Vertex Tracker; a well-integrated, large-acceptance, precision tracking and vertexing solution based on a new generation of MAPS in 65 nm CMOS imaging technology.

Speaker: Nicole Apadula (Lawrence Berkeley National Lab. (US))

Apadula_FCC_June24.pdf

203 The OBELIX sensor for the Belle II VTX Upgrade

OBELIX is a depleted monolithic active pixel sensor developed for the Belle II experiment at the SuperKEKB $e^+e^-$ asymmetric energy collider designed to cope with high particle fluence. The proposed upgrade of the Belle II Vertex Detector (VTX) will use OBELIX sensor on all its 5 layers. The sensor is based on the TJ-Monopix2 design, fabricated in a radiation hard CMOS 180 nm process.

While its pixel matrix is inherited from TJ-Monopix2, the OBELIX periphery is designed from scratch: A 2-stage pixel memory matches Belle II trigger requirements, handling events with hit rates up to 120 MHz/cm$^2$ at a 10 $\mu$s latency without buffer overflow. This logic also handles hit rate spikes of 600 MHz/cm$^2$ and 0.5 $\mu$s duration with less than 0.5% data loss. This tolerance to spikes is necessary to maintain efficiency at the continuous injection scheme of the SuperKEKB collider. In addition, OBELIX includes LDO regulators for supply voltages intending to simplyfy the chip integration into
the detector system.

To improve track reconstruction performance, an additional high precision timing module is included in the periphery of OBELIX. Based on TJ-Monopix2 test results, a time resolution of less than 3 ns is expected. This feature is, however, currently limited to low hit rates and will only be enabled for the outer 3 layers of the VTX.

A new feature for the vertex detector introduced by OBELIX is the possibility to contribute to the trigger. The chip can provide coarse hit information at low latency to the trigger system in order to build decisions based on VTX tracks. The current implementation is intended as a proof of concept. A transmission time of 200 ns is reached by reducing the matrix granularity to only 8 macropixels.

This contribution will focus on the features of the first OBELIX submission ( 'OBELIX-1’ ) chip currently under development. Details on the design and its implementation, as well as results of various performance simulations calibrated with real data from TJ-Monopix2 measurements will be presented.

Speaker: Christoph Schwanda (Austrian Academy of Sciences (AT))

fcc_obelix_schwanda_v3.pdf

204 Development of precision tracking detectors at Fermilab

We will present the latest developments and plans in the Fermilab group on the development of precision tracking detectors for FCC-ee applications. Efforts have been focused on advances towards manufacturing of novel sensors and on the design of sophisticated Application Specific Integrated Circuits (ASICs) required to achieve the ambitious goals of FCC-ee. We will present developments over several directions that aim to advance particle detectors technologies. The talk will cover our developments and plans for Monolithic Active Pixel Sensors for FCC-ee applications in tracking and calorimeters, 3D-integrated sensors and dedicated ASICs, and 4D-tracking sensors. These projects are a result of successful collaborations among many US and international partners, and this collaborative aspects will be also presented.

Speaker: Artur Apresyan (Fermi National Accelerator Lab. (US))

Tracking R&D at FNAL.pdf

205 A Straw Tracker for the FCC-ee

We propose to conduct research and development on a straw tracker that can be used as an inner tracker for the FCC-ee. The straw tracker offers the advantage of a low material, a crucial factor in minimizing overall inner detector material budget. With the capability to achieve a single-hit resolution of approximately 120 microns per layer, and the potential for up to 100 layers, the straw tracker will play a pivotal role in pattern recognition and particle identification. Each individual straw serves as a standalone unit, facilitating easy removal of a channel in case of a broken sense wire. The electric field is radial symmetric and the hit position resolution is thus independent of the particle's incident angle. Furthermore, the adaptability of the straw tracker design is highlighted by its ability to accommodate straws with different radii in different detector regions.

We will present simulation and optimization studies for a straw tracker using GEANT4. We will also present detailed Garfield simulation of the gas mixture and the resulting raw detector signals.

Speaker: Junjie Zhu (University of Michigan (US))

StrawTracker-FCCee-Week.pdf

Poster session

Convener: Frank Zimmermann (CERN)

206 Investigation of low gain avalanche detectors exposed to proton fluences beyond $10^{15} \mathrm{n}_{\mathrm{eq}}/\mathrm{cm}^2$ and gamma dose up to 2.2 MGy

Low gain avalanche detectors (LGADs) fabricated by Hamamatsu Photonics KK (HPK) and Fondazione Bruno Kessler (FBK) have been evaluated for performance before and after exposure to gamma and proton irradiation. LGADs promise excellent timing resolution, which can mitigate the pileup associated with high luminosity at hadron colliders. Their timing information can also be used to distinguish long-lived particles with resolvable secondary vertices at lepton colliders. The most highly irradiated LGADs at the HL-LHC will be subject $2.5\times10^{15} \mathrm{n}_{\mathrm{eq}}/\mathrm{cm^2}$ of hadron fluence and 2.2 MGy of total ionizing dose during the LHC’s Run 4; their timing performance must tolerate this. HPK and FBK LGADs have been irradiated with 400 and 500 MeV protons respectively up to the Run 4 hadron equivalent fluence. HPK LGADs were also exposed to 2.2 MGy of gamma dose. Measurements of the irradiated LGADs' leakage current, capacitance, charge collection, and timing performance are presented. A timing resolution better than 70 ps is observed for all proton fluences. Charge collection is below 10 fC for the HPK sensors after $(0.74\pm0.22)\times10^{15} \mathrm{n}_{\mathrm{eq}}/\mathrm{cm}^2$, and for the FBK sensors after $(0.75\pm0.20)\times10^{15} \mathrm{n}_{\mathrm{eq}}/\mathrm{cm}^2$ for all operating voltages below 600 V. A set of 2x2 arrays of both the FBK and HPK LGADs were produced to study the inter-pad characteristics. The inter-pad resistance for the HPK LGADs stayed above 10 M$\Omega$ beyond $0.7\times10^{15} \mathrm{n}_{\mathrm{eq}}/\mathrm{cm}^2$, and the inter-pad resistance of the FBK LGADs fell slightly below 1 MOhm after $10^{15} \mathrm{n}_{\mathrm{eq}}/\mathrm{cm}^2$. Observations of the punch-through voltage and inter-pad isolation for fast signals are reported. The gamma irradiated devices show increase in leakage current and loss in inter-pad resistance comparable to those of the proton irradiated sensors, but minimal gain layer degradation.

Speaker: Josef Daniel Sorenson (University of New Mexico (US))

207 Using Generative AI to Explore the Limits of Jet Tagging

The precise identification of jets originating from high-energy quarks and gluons is paramount for advancing our understanding of fundamental particles and forces. This study introduces a novel deep learning framework designed to probe the limits of jet classifier models by using generative AI.  State-of-the-art generative models called diffusion neural networks are used to create synthetic jet data where we simultaneously estimate the probability density by solving a differential equation. The likelihood ratio built from the probability density is the theoretical optimal classifier. Our research goal is to explore how close state-of-the-art classifier models are to this bound. We find that a state of the art transformer model performs very well, noting increases in true positive rates and decreases in false positive rates, but there is still a gap with respect to the optimal classifier.

Speaker: Nishank Nilesh Gite (Lawrence Berkeley National Lab. (US))

208 High radiation resistance LGAD designs

In the past few years, the Low Gain Avalanche Detector (LGAD, thin silicon detectors with modest internal gain and extremely good time resolution) technology have been significantly advanced. The first application of this kind of device will be in the ATLAS and CMS timing layers at the HL-LHC. The first prototypes of LGADs produced few years ago within the collaborations did not show sufficient radiation hardness. However, LGADs with radiation hardness up to a fluence of 2.5E15 Neq/cm2 were developed in the last 5 years thanks to a focused R&D effort.
This successful development paves the path for next generation machines (e.g., FCC-hh) that will require radiation tolerance an order (or more) of magnitude greater and at the same time require a better timing and position resolution. The cited requirements are in a high pile-up environment that is not suitable for AC-LGADs which is the most advanced high granularity LGAD prototype.
There are several new LGAD prototypes that are geared towards satisfying all of these requirements as well as radiation hardness, this contribution will give a brief overview on them and the path forward in their development.

Speaker: Dr Simone Michele Mazza (University of California,Santa Cruz (US))

poster_FCC_workshop_2024.pdf

209 Exploring the supersymmetry through gauginos with FCC-hh

The pure gravity mediation model based on anomaly-mediated supersymmetry breaking is among the well-motivated models consistent with the large Higgs mass and the non-observation of supersymmetry at the LHC so far. We focus on a scenario where all the gauginos, including the neutral Wino which is the lightest supersymmetric particle, are within the kinematical reach of the FCC-hh, and study the model through the gaugino production processes. We show that the masses of gauginos, the lifetime of the charged Winos, and the mass spectrum of squarks can be studied in detail by analyzing these processes even if squarks are out of the kinematical reach.

Speaker: So Chigusa

poster.pdf

210 Heavy Neutral Leptons Search in a Realistic Neutrino Oscillation Model at FCC-ee

The Standard Model predicts neutrinos to be massless but the observation of neutrino flavor oscillations implies that they are massive particles.
The type I see-saw mechanism has been extensively studied as a promising model of neutrino mass generation in which the existence of right-handed heavy neutrinos (also called heavy neutral leptons, HNLs) is needed to counterbalance the mass of the observed left-handed neutrinos. Precedent studies considered one HNL as a benchmark phenomenological model but at least two HNLs are needed to explain neutrino oscillations and, simultaneously, the baryon asymmetry of the Universe and dark matter generation, thus being able to give a solution to the main open problems of the Standard Model. The case of two generations of HNLs is considered, with a non-diagonal mixing matrix in all three lepton flavors. The analysis is conducted in the context of exploration proposed by the Future Circular Collider (FCC) in its e+e- stage at the Z-pole. The discovery region accessible at FCC-ee has not been previously excluded by other experiments and allows the HNLs to attain long-lived properties. The search is then focused on displaced vertices, and other reconstructed variables, as an indication of HNL interactions in the IDEA detector. From these properties, an excellent background suppression is achieved. The signal significance is evaluated in a wide range of HNL parameter space. This expected sensitivity is compared with the current experimental constraints as well as the expectations from other future projects. The impacts of detector performance on the HNL sensitivity is also discussed.

Speaker: Xunwu Zuo (KIT - Karlsruhe Institute of Technology (DE))

A0 - HNLs poster for FCC Week 24.pdf

211 Exploring New Physics with the Optical Dump at LUXE and Prospects for Future Facilities

The planned LUXE experiment at DESY in Hamburg (Germany) stands at the forefront of the investigation into strong-field quantum electrodynamics with high precision. The interaction between electrons or photons and a high-intensity laser generates new electrons, positrons, and photons. The phenomena under examination include non-linear Compton scattering, non-linear Breit-Wheeler pair production, and the trident process. LUXE's primary objective is to measure the dependence of the matter-antimatter pair production rate on laser intensity. Furthermore, the Compton photons generated in the primary interaction offer an avenue for exploring new physics through a beam-dump-type experiment. Such a concept can also be applied for future colliders.

Speaker: Ivo Schulthess (Deutsches Elektronen-Synchrotron DESY)

fccWeek2024_poster_schulthessIvo.pdf

212 The e+ e- -> Z H process in the Standard Model Effective Field Theory beyond Leading Order

We systematically study potential effects of BSM physics in the e+ e- -> Z H process. To this end we include dimension-6 Standard Model Effective Field Theory operators and work to NLO accuracy in the electro-weak coupling. To capture the full breadth of potential signatures we include virtual and radiative corrections fully-differential, as well as consider polarized and unpolarized electron and positron beams. In this first study we take a closer look on the Higgs trilinear coupling and CP violating operators.

Speaker: Konstantin Asteriadis

213 The GeoModel Toolkit for FCC simulation

The software description of the ATLAS detector is based on the
GeoModel toolkit, developed in-house for the ATLAS experiment but
released and maintained as a separate package with few dependencies.
A compact SQLite-based exchange format permits the sharing of
geometrical information between applications including visualization,
clash detection, material inventory, database browsing, and
lightweight full G4 simulation. The set of geometrical primitives
is based on a scene graph approach. Shared instancing and volume
parameterization can be used to achieve a low memory footprint.
An interface to the alignment system allows for multithreaded
operation, required for situations in which a detector element is
considered in concurrent threads during different alignment periods.
The geometry tool has been used in ATLAS for over a 20 year period,
and recently expanded to a more comprehensive toolkit for geometry
development, which is portable, friendly, and easily installed. It
is proposed to investigate the use of this toolkit to assemble and
operate a simulation of one or more proposed FCC detector systems.

Speaker: Vakho Tsulaia (Lawrence Berkeley National Lab. (US))

214 Integrated Carbon Fiber Composite Structures for Future HEP Detectors

Particle detectors for future colliders rely on ever more precise charged particle tracking devices, which are supported by structures manufactured from composite materials. The higher luminosity and higher radiation environment present challenges to support structures and cooling of the detectors. An integrated engineering approach for mechanical structures, cooling and at times sensing is required from conceptualization stage of detectors. Engineering methods and research towards such future detectors is presented. Development of integrated cooling and support structure for applications in calorimetry is presented as a part of CalVision collaboration for the proposed IDEA experiment for future Higgs factories. Detectors at electron-positron machines have significantly smaller material budgets and require targeted concepts. Such sensing R&D efforts with carbon fiber composites is also summarized.

Speaker: Sushrut Rajendra Karmarkar (Purdue University (US))

20240607 FCC Low Mass Support Structures.pdf

215 FCC-ee tuning studies with pyAT

We present a study of the impact of arc magnet alignment errors in the FCC-ee V22 @ Z energy lattice. The aim of the study is to provide realistic alignment tolerances. The Python accelerator toolbox PyAT was used to develop a sequence of correction steps to achieve the nominal emittance,
dynamic aperture (DA), and in the end the design luminosity. The correction scheme has been recently optimized and better machine performance demonstrated. A comparison between LOCO and phase advance/RDT optics correction was performed, showing a somewhat better performance of
the latter.

Speaker: Elaf Musa (DESY)

216 FCCAnalyses cheatsheet

In FCCAnalyses we utilize the powerful event processing abstractions of ROOT RDataFrame in combination with the event data description of the EDM4hep format, resulting in a fast and multi-threaded framework. The FCCAnalyses package also provides a standard library of analyzer functions, the integration of commonly used HEP tools such as FastJet, ONNX, DD4hep, Delphes, ..., and metadata management of centrally or locally produced samples. This makes FCCAnalyses a full fledged solution for a large spectrum of analyses purposes. The proposed poster will present a cheatsheet/manual page of the framework to better inform all FCC colleagues at the conference about its design, implementation, conventions and best practices.

Speaker: Juraj Smiesko (CERN)

fccana-print.pdf

217 End-to-end ML-based reconstruction

We present an ML-based end-to-end algorithm for adaptive reconstruction in different FCC detectors. The algorithm takes detector hits from different subdetectors as input and reconstructs higher-level objects. For this, it exploits a geometric graph neural network, trained with object condensation, a graph segmentation technique. We apply this approach to study the performance of pattern recognition in the IDEA detector using hits from the pixel vertex detector and the drift chamber. We also build particle candidates from detector hits and tracks in the CLD detector. Our algorithm outperforms current baselines in efficiency and energy reconstruction, and allows pattern recognition in the IDEA detector. This approach is easily adaptable to new geometries and therefore opens the door to reconstruction performance-aware detector optimization.

Speaker: Gregor Krzmanc (ETH Zürich)

218 Key4hep cheatsheet

Key4hep is a framework which aims at integrating all physics software of the future colliders. The proposed poster will present a "Cheatsheet" of Key4hep to better inform all FCC colleagues at the conference about its design, implementation, conventions and best practices. The focus will be mainly held on the four pillars of Key4hep, which are: Gaudi --- event processing framework with services, algorithms and tools as a building blocks; EDM4hep --- common datamodel intended for all stages of the event lifecycle (from simulation, through reconstruction, up to the analysis); DD4hep --- detector description able to compartmentalize individual sub-detectors allowing Plug-and-Play approach; and Spack --- software distribution solution providing multiple versions and/or multiple configurations of a package.

Speaker: Juan Miguel Carceller (CERN)

20240613_key4hep_carceller.pdf

219 Autoencoder Style Neural Networks for Estimation and Control with Unknown Time Varying Parameters

We demonstrate the use of an autoencoder style generative neural network (NN) architecture on problems in the estimation and control of accelerators. Using HPSim, a high-performance particle tracking code, we generate datasets and train a NN to map from accelerator tuning parameters and the initial condition to measurements of interest, like phase space projections and beam loss, as well as reproducing the initial condition itself. We assume that certain outputs of the NN, like beam loss, can be measured from a real accelerator system, which can be compared with the NN prediction to generate an error signal. This error signal can be used to estimate quantities like the initial condition and phase space projections --- even after training when these quantities change over time and cannot be measured. We also show how this method can be used to perform control actions to tune the beam.

Speaker: Alan Williams

220 Full simulation of IDEA muon system

IDEA detector concept foresees a muon detection system that would be realized using the μRWELL technology. Each station will consist of a large mosaic of 50 × 50 cm2 μRWELL detectors.
The objectives include simulating and optimizing the IDEA muon detector design within Key4hep simulation toolkit, evaluating its performance and estimating its physics reach for highly displaced charged particle signatures.

Speaker: Mahmoud Ali (FCC)

221 A Triplet Track Trigger Case Study for FCC-hh: Enhancing the Measurement of Di-Higgs Production and Higgs Self-Coupling

The Triple Track Trigger (TTT) concept is proposed for the FCC-hh detector to exploit the full potential of the unprecedented energy ($\sqrt{s} = 100\,\mathrm{TeV}$) and high luminosity ($30\times 10^{-34}\,\mathrm{cm^{-2}s^{-1}}$) proton-proton (pp) collisions at FCC-hh. The primary objective of the TTT is to trigger physics at the electroweak scale in real time by significantly suppressing signals from the low energetic pp collisions at a pileup rate of $\sim\!\mathcal{O}(1000)$, assuming $25\,\mathrm{ns}$ bunch crossing.

The TTT concept is based on a highly scalable state-of-the-art monolithic pixel sensor technology comprising three closely stacked and highly granular pixel barrel layers at large radii ($\sim\!\!1\,\mathrm{m}$). An extension of the TTT to the endcap region increases the geometrical acceptance to a pseudorapidity of 2.5. A simple and fast algorithm, which can be implemented in hardware processors at the first trigger level, enables online reconstruction of all TTT tracks at $40\,\mathrm{MHz}$. Additionally, TTT enables the reconstruction of pileup-suppressed track-jets to trigger physics signals of interest by reconstructing the primary collision vertex with high efficiency.

This presentation focuses on a case study demonstrating the ability of the TTT to trigger the rare physics process of $\mathrm{HH} \rightarrow 4b$ [arXiv:2401.16046]. Based on a Geant4 simulation of the FCC-hh detector including the TTT, both the tracking and the trigger performances have been studied. A comparison of the TTT with a calorimeter trigger, illustrates TTT's superiority to select $\mathrm{HH} \rightarrow 4b$ events with an order of magnitude lower trigger threshold. Due to the lower trigger threshold, a substantial gain in sensitivity for measuring the Higgs self-coupling is expected. Last but not the least, a potential hardware implementation of the concept is outlined.

Speaker: Ms Tamasi Kar (Heidelberg University (DE))

poster_FCC-Week2024.pdf

222 Recent results on dual readout crystal EM calorimetry

Dual readout crystal calorimetry allows state-of-the-art electromagnetic resolution while preserving excellent jet energy resolution. We report here updated results from the CalVision and MaxiCC collaborations, including new results from an electron test beam at DESY. We also present new results on full simulations of the calorimeter incorporated into the IDEA detector

Speaker: Sara Nabili (University of Maryland (US))

Poster_FCCee_ver1.pdf

223 The air-cooling system for the IDEA Vertex Detecor at FCC-ee: thermal performance and vibrational effects

The IDEA detector is one of the concepts under research for the Future Circular Collider (FCC). For its innermost part, the Vertex Detector, which would occupy a cylindrical volume of 50 mm radius and 550 mm lenght, a power dissipation of about 120 W is foreseen. For the removal of this heat, a cooling system based on forced air convection is under development. Such a technical solution would minimize the quantity of material located in the tracking volume, concentrating all the services only in the two endcaps. The sensitive volume would therefore be occupied only by sensors and related support structures, which would also act as cooling fins to maximize convective heat exchange. In this scenario, Computational Fluid Dynamics (CFD) and, more widely, Finite Volume Simulations, can offer a useful tool to evaluate the feasibility of this solution and to guide the designers in the optimization of the thermal performance. An example of a calculation model developed with the Ansys simulation suite will be given, showing how thermal performance varies by adopting different construction choices. Furthermore, starting from this model and the structural analysis if the system, the evaluation of the vibrational effect due to the interaction between the fluid and the lightweight structure is implemented.

Speaker: Dr Giorgio Baldinelli (University of Perugia)

Baldinelli et al.pdf

224 Structural Optimization of Future Circular Collider Interaction Region Support Structure

In this poster is presented a study on the structural optimization of the support structure for the interaction region (IR) of the Future Circular Collider (FCC). The aim is to optimize the structure to reduce the mass, maintaining the stiffness needed. Finite element analysis (FEA) is used to develop a detailed numerical model considering complex geometries, material properties, and loading conditions. The study seeks to identify design improvements using optimization algorithms, such as SIMP, Generative Design and Lattice approach, to ensure the respect of requirements of the FCC IR support structure during operation.

Speaker: Francesco Fransesini (INFN e Laboratori Nazionali di Frascati (IT))

225 Material Budget of the FCC-ee IR

We present the material budget for the latest engineered design of the interaction region (IR) of the Future Circular Collider (FCC).
In order for the LumiCal to reach the required absolute precision, it is necessary to use high radiation length (X0) material for the beam pipe elements in front of this detector.
We compare the material budget in the LumiCal acceptance for two versions of the IR beam pipe, mainly differing for the cooling manifolds material (copper and AlBeMet162). We also show the energy deposit in the LumiCal induced by secondary showers coming from the beam pipe material.

Speaker: Giulia Nigrelli

226 A next generation, integrated community toolset for the modeling of colliders

The design of the next generation of colliders demands a renewed, high-performance, integrated set of simulation codes. We present the Beam, pLasma & Accelerator Simulation Toolkit (BLAST), which includes legacy accelerator codes such as Impact-T, Impact-Z, Warp and Posinst, as well as a renewed generation of accelerator codes such as ImpactX, WarpX and HiPACE++. The new codes, born out of the US DOE Exascale Computing Project (ECP), all share a common foundation based on the AMReX library that gives native support for mesh refinement and high performance on both CPU-based and GPU-based computer architectures. The integrated set also includes python-driven workflows for efficient parametric optimization and coupling with machine learning frameworks. We will present the latest of the toolkit and new codes, with discussion on their applications to start-to-end modeling of colliders from the source to the interaction point including beam-beam crossing effects.

Speaker: Jean-Luc Vay

227 Operational Considerations for Laser Control of the FCC Bunch Intensity

The charge imbalance between colliding bunches in the FCC-ee ring must be less than 3-5% in order to avoid the beamstrahlung-induced flip-flop instability [1]. The charge of the colliding bunches is leveled through top-up injection, but this is a slow process. Laser Compton back scattering (CBS) has been proposed as a mechanism to quickly level the charge of colliding bunches between top-ups [2]. This scheme has been shown to be effective through simulations of the Compton interaction and turn-by-turn modeling of the FCC [3]. In this work, we seek opportunities to improve performance and reliability of the CBS system. We explore strategies for reducing the required energy in the laser pulse by reducing the pulse spot size. To prevent radiation damage to the laser optics, we introduce a finite angle of incidence between the laser and e+/e- beams. We study the interplay between angle of incidence and laser pulse length in this scenario. We investigate novel concepts, such as using short pulse lasers for quenched photon emission in the strong-field regime [4,5]. Finally, we discuss opportunities for experimental tests using the E320 infrastructure at FACET-II.

[1] D. Shatilov, “BEAM-BEAM EFFECTS AT HIGH ENERGY e+e– COLLIDERS,” TUYBA02, eeFACT2018, Hong Kong, China
[2] F. Zimmerman, T. Raubenheimer, “CONTROLLING e+/e− CIRCULAR COLLIDER BUNCH INTENSITY BY LASER COMPTON SCATTERING,” WEPOST010, IPAC2022, Bangkok, Thailand.
[3] I. Drebot et al., “OPTIMIZING THE BEAM INTENSITY CONTROL BY COMPTON
BACK-SCATTERING IN e+/e- FUTURE CIRCULAR COLLIDER,” MOPA074, IPAC2023, Venice, Italy.
[4] C. N. Harvey et al. "Quantum Quenching of Radiation Losses in Short Laser Pulses” Phys. Rev. Lett. 118, 105004 (2017)
[5] M. Tamburini and S. Meuren, "Efficient high-energy photon production in the supercritical QED regime” Phys. Rev. D 104, L091903 (2021)

Speaker: Spencer Gessner (SLAC)

FCC_Week_poster.pdf

228 Enhancing positron sources for future colliders through conical converter targets

We propose a concept for a e+ source based on high energy e- beams incident on conical converter targets, in pursuit of its implementation in future lepton colliders such as FCC-ee. Two conical target solutions were optimized for a state-of-the-art capture system based on a high-temperature superconducting solenoid, allowing for a full target immersion in a 12.7 T peak field. According to simulation studies, conical targets would increase by up to 70% the e+ yield accepted by the FCC-ee damping ring, including the detrimental impact of their mechanical interface and cooling pipes. A thermo-mechanical study of 2 conical targets and their supports is also presented, using the baseline parameters of the FCC-ee injector linac, as well as a mechanical integration concept for P$^3$, the future FCC-ee e+ source test facility.

Speaker: Nicolas Vallis (PSI/EPFL)

229 Diagnostics for the FCC-ee positron source test facility at PSI

The P$^3$ experiment is the positron source test facility for FCC-ee, which is presently under construction at the Paul Scherrer Institute in Switzerland. The proposed diagnostics setup will detect the charge, longitudinal profile, and energy spectrum of multispecies electron-positron beams in the nano-Coulomb and multi-MeV range. Additionally, the diagnostics must work under extremely challenging emittance and energy spread conditions. Three instrumentation setups are essential to achieve this: non-invasive longitudinal bunch profile monitors based on broadband pick-ups, Faraday cups, and energy-spectroscopic setups based on scintillator screens and fibers. These studies are based on computer simulations and experimental measurements carried out at the CERN's CLEAR facility.

Speaker: Nicolas Vallis (PSI/EPFL)

230 Lepton injection and extraction system at FCCee

The FCCee complex will produce and transport the lepton beams to the collider ring. From the damping ring to the top-up injection in the collider ring, beam transfer systems are required to ensure beam injection and extraction. Each system has specific requirements, determined by the beam energy, required deflection, available space and so on. This contribution presents the concepts for injection and extraction systems across all those machines. A focus on the collider technical straight section of point B highlights particular challenges associated with the integration of booster and collider systems.

Speaker: Sen Yue

231 Input signals for error mitigation by interaction point fast feedback systems for FCC-ee

During operation, the Future Circular electron-positron Collider (FCC-ee) will be subject to vibrations from mechanical sources and ground motion, resulting in errors with respect to the closed orbit. To achieve physics performance, luminosity and beam lifetime must be kept to design specifications. To correct for errors at the interaction points (IPs), a fast feedback system is required. We present the tolerances for the allowable beam offsets at the IPs and propose a fast feedback system to address these errors, with the methods of detecting and correcting errors discussed.

Speaker: Mr John Patrick Salvesen (University of Oxford, CERN)

FCC_Week_2024_Poster.pdf

232 Simulated Performance of FCC-ee IP Tuning Knobs

The Future Circular electron-positron Collider (FCC-ee) is a proposed accelerator with a 91 kilometre circumference that should serve as a Higgs and electroweak factory, with unprecedented luminosity. Unavoidable misalignments and field errors will generate optics errors at the interaction point (IP), whose effect will be amplified by the beam-beam collisions, which will make it challenging for the collider to reach its intended luminosity goals. Hence, there is a need for correction tools that will enable the precise correction of the optics at the IP, such as linear coupling parameters and spurious dispersion. This will be essential both for FCC-ee commissioning and during routine operation. This poster describes the construction, simulated effectiveness, and constraints of IP tuning tools and the pyAT optics tuning of FCC-ee lattice.

Speaker: Satya Sai Jagabathuni (Universite de Geneve (CH))

233 ALLEGRO detector concept for FCC-ee

The detectors to be operating at the Future Circular electron-positron collider (FCC-ee) must fulfill demanding requirements on the high precision measurements. Key requirements for the detector include excellent energy and angular resolution as well as excellent particle identification capabilities. The ALLEGRO detector is a general-purpose detector concept well suited for the FCC-ee. The individual parts of the detector are introduced. The calorimeter system consists of high granular noble-liquid calorimeter and hadronic calorimeter with scintillating tiles and readout of the wavelength shifting fibers. Preliminary results from performance studies using simulated beams of electrons and pions are presented. In addition to these design-focused analyses, we briefly introduce our inquiries into the potential use of machine learning approaches for particle identification and detector calibration.

Speaker: Jana Faltova (Charles University (CZ))

Poster__FCC_week_2024.pdf

234 Luminosity tuning and optimization

FCC-ee luminosity optimization relies on measuring realistic signals from Bhabha scattering, beamstrahlung, and radiative Bhabha photons. Initial assessments of beamstrahlung signals examine the change in luminosity and beamstrahlung power in response to waist shifts and vertical dispersion at the collision point. These ongoing studies aim to extract IP-aberration-related signals from the energy spectrum, angular distribution, and power of beamstrahlung photons. Furthermore, the study is to be extended to include signals from the luminometer and vertex detector, potentially integrating all of them into a machine-learning-based approach for luminosity tuning and optimization.

Speaker: Vaibhavi Gawas (Universite de Geneve (CH))

235 Optimization of FCC circumference for hh

The accelerator circumference will remain an unchangeable parameter throughout the entire life of the FCC program. A cautious choice is therefore essential to cover all present and future requirements in terms of beam transfer schemes or bunch spacing and length. The exact circumference becomes particularly important for the FCC-hh, when hadron beams will be supplied by a high-energy booster synchrotron either in the SPS or the LHC tunnel. The numerator and denominator in the rational circumference ratio between the FCC and its injector define the fundamental periodicity of possible beam transfers. The ratio of FCC and LHC for the present baseline circumference is extremely close, but not exactly 17/5. Moving it to precisely that value by shorting the tunnel by 18 m would allow hadron injections to take place every five revolutions, opening the door to, for example, RF manipulations to control the bunch length and alternative beam transfer schemes. This contribution summarizes the impact of the proposed fine tuning of the FCC circumference on RF frequencies, as well as its benefits for more flexibility at beam transfer.

Speaker: Heiko Damerau (CERN)

CircumferenceOptimizationFCChh.pdf

CircumferenceOptimizationFCChh.pptx

236 The Development of Silicon Carbide Low Gain Avalanche Detector

High-energy and high-luminosity collision experiments on the future collider demand higher radiation resistance and time resolution detectors due to events pile-up. Silicon Low-gain avalanche detectors (LGADs) with excellent time resolution have been identified for use in collider experiments, such as ATLAS and CMS experiments. However, due to the inherent properties of silicon material, the operating voltage and temperature requirements for irradiated Si LGADs are even more demanding. Especially in environments with irradiation fluences exceeding $10^{16}~ n_{eq}/cm^{2}$ and under general detector operating conditions, there is a need to explore new solutions.
In comparison to silicon, silicon carbide (SiC) offers lower intrinsic carrier concentration, faster carrier saturation drift velocity, higher breakdown electric field, and greater theoretical radiation resistance. This makes it a promising candidate for applications in collider experiments.
In recent years, with the increasing demand for commercial silicon carbide power devices, related silicon carbide processing technologies have rapidly advanced. This has made it possible to fabricate multi-layer epitaxial structures of silicon carbide devices, such as SiC LGAD. However, the fabrication of SiC LGAD also imposes additional requirements on the processing technology, such as ultra-low-doped silicon carbide epitaxial layers, precise control of epitaxial layer doping concentration and thickness, and termination etching. We will report on the latest developments in SiC LGAD conducted by Lawrence Berkeley National Laboratory(LBNL) and North Carolina State University (NCSU).

Speaker: Tao Yang

237 FCC-relevant capabilities and compentencies available from ANL

Speaker: Philippe Piot (Northern Illinois University)

Friday 14 June

08:00 Welcome coffee

Summaries: First session

Convener: Philippe CHOMAZ

238 Civil Engineering

Speaker: Timothy Paul Watson (CERN)

2406011_TWA_FCC_week_Closeout.pdf

2406011_TWA_FCC_week_Closeout.pptx

239 Technical Infrastructure

Speaker: Klaus Hanke (CERN)

20240614_infra_summary_v4.pdf

20240614_infra_summary_v4.pptx

240 Accelerator

Speaker: Christian Carli (CERN)

24_06_14_FCCWeek_AccSummary.pdf

24_06_14_FCCWeek_AccSummary.pptx

241 Accelerator R&D including RF

Speaker: Tor Raubenheimer (SLAC National Accelerator Laboratory – On Leave)

240614 FCC_ATD_summary.pdf

240614 FCC_ATD_summary.pptx

242 FCC-hh & HFM

Speaker: Soren Prestemon (LBNL)

FCChh and HFM summary.pdf

FCChh and HFM summary.pptx

10:00 Coffee break

Summaries

Convener: Jinlong Zhang (Argonne National Laboratory (US))

243 EPOL

Speaker: Jacqueline Keintzel (CERN)

20240614_KeintzelWilkinson_EPOLSummary_FCCWeek.pdf

244 MDI

Speaker: Manuela Boscolo (INFN e Laboratori Nazionali di Frascati (IT))

240614_MDI_Summary_FCCWEEK24_MBoscolo.pdf

245 Physics

Speaker: Christoph Paus (Massachusetts Inst. of Technology (US))

fccweek-summary.pdf

246 Early Career Researchers

Speaker: Matthew Daniel Citron (University of California Davis (US))

ECRSessionSummary.pdf

247 Summary from US side

Speaker: Sarah Eno (University of Maryland (US))

FCC SF Eno Closing.pdf

248 Concluding remarks

Speaker: Michael Benedikt (CERN)

FCC-2406141200-MBE_FCCW2024-ClosingRemarks.pdf

FCC-2406141200-MBE_FCCW2024-ClosingRemarks.pptx