Linear Collider@CERN Workshop 2026

Name: Linear Collider@CERN Workshop 2026
Start: 2026-01-07T09:00:00+01:00
End: 2026-01-09T19:30:00+01:00
Location: CERN

7 Jan 2026, 09:00 → 9 Jan 2026, 19:30 Europe/Zurich

503/1-001 - Council Chamber (CERN)

503/1-001 - Council Chamber

CERN

162

Show room on map

Erik Adli (University of Oslo (NO)), Jenny List (Deutsches Elektronen-Synchrotron (DE))

Description

Following the outcome of the European Strategy for Particle Physics, this workshop organised in the context of LCVision will discuss the next steps for a linear collider at CERN, including the technical work in the preparation phase, the long-term evolution with future upgrade options as well as organisational aspects.

The meeting will take place at CERN, and be run in hybrid mode. The zoom link will be communicated to registered participants only.

The registration is free of charge and is mandatory to attend the event.

The participants of the workshop put together the statement linked here.

Data Privacy Protection Policy : OC no.11 - Privacy Notice

Administrative Support

Alexia.augier@cern.ch

Participants

221 View full list

Wednesday 7 January
- Executive session (closed) 503/1-001 - Council Chamber
  
  503/1-001 - Council Chamber
  
  CERN
  
  162
  Show room on map
  
  LCVision Editorial Board, IDT Executive Board, CLIC Accelerator Steering Committee, parallel session conveners
- 13:00
  
  Lunch Restaurant 1
  
  Restaurant 1
  
  CERN
- Opening Plenary: EPPSU reports, overview and strategic talks 503/1-001 - Council Chamber
  
  503/1-001 - Council Chamber
  
  CERN
  
  162
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  - 1
    
    Welcome 503/1-001 - Council Chamber
    
    503/1-001 - Council Chamber
    
    CERN
    
    162
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    Speaker: Mark Thomson (CERN)
  - 2
    
    Charge to Linear Collider at CERN study and/or the Workshop 503/1-001 - Council Chamber
    
    503/1-001 - Council Chamber
    
    CERN
    
    162
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    Speaker: Jenny List (Deutsches Elektronen-Synchrotron (DE))
  - 3
    
    Physics case of linear colliders - what we know and what we don’t know 503/1-001 - Council Chamber
    
    503/1-001 - Council Chamber
    
    CERN
    
    162
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    Speaker: Dr Junping Tian (The University of Tokyo)
    
    LinearColliderPhysics_LCVision20260107_V2.pdf
  - 4
    
    ITN status and how it could contribute to LinearCollider at CERN study 503/1-001 - Council Chamber
    
    503/1-001 - Council Chamber
    
    CERN
    
    162
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    Speaker: Shinichiro MICHIZONO (KEK)
    
    ITN20260107v2B.pdf
  - 5
    
    CLICX X-band and two-beam technology outlook 503/1-001 - Council Chamber
    
    503/1-001 - Council Chamber
    
    CERN
    
    162
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    Speaker: Walter Wuensch (CERN)
    
    CLIC Xband 2026-1-7.pdf
    
    CLIC Xband 2026-1-7.pptx
  - 6
    
    CLIC & ILC: main linacs, BDS and IP parameters - differences and commonalities 503/1-001 - Council Chamber
    
    503/1-001 - Council Chamber
    
    CERN
    
    162
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    Speaker: Daniel Schulte (CERN)
    
    CLIC_ILC.pdf
    
    CLIC_ILC.pptx
  - 16:00
    
    Coffee 61/1-201 - Pas perdus - Not a meeting room - (CERN)
    
    61/1-201 - Pas perdus - Not a meeting room -
    
    CERN
    
    10
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  - 7
    
    ATF2 status & plans 503/1-001 - Council Chamber
    
    503/1-001 - Council Chamber
    
    CERN
    
    162
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    Speaker: Toshiyuki Okugi
    
    ATF2_okugi_20260107.pdf
  - 8
    
    US Priorities for Future Collider Accelerator R&D 503/1-001 - Council Chamber
    
    503/1-001 - Council Chamber
    
    CERN
    
    162
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    Speakers: Spencer Gessner, Spencer Gessner (SLAC)
    
    Gessner_US_Accelerator_RandD.pdf
  - 9
    
    Japan’s take on LinearCollider at CERN 503/1-001 - Council Chamber
    
    503/1-001 - Council Chamber
    
    CERN
    
    162
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    Speaker: Masaya Ishino (University of Tokyo (JP))
    
    Masaya_v01.pdf
  - 10
    
    Status of CEPC and thoughts on a linear collider 503/1-001 - Council Chamber
    
    503/1-001 - Council Chamber
    
    CERN
    
    162
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    Speaker: Prof. Jie Gao (Institute of High Energy Physics, Chinese Academy of Sciences (CN))
    
    CEPC status and Thoughts on Linear Colliders (LCF@CERN)-V5-J. Gao.pdf
  - 11
    
    A linear collider at CERN: Workplan for 2026-28 503/1-001 - Council Chamber
    
    503/1-001 - Council Chamber
    
    CERN
    
    162
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    Speaker: Steinar Stapnes (CERN)
    
    Plans26-28.pdf
    
    Plans26-28.pptx
- Reception 61/1-201 - Pas perdus - Not a meeting room -
  
  61/1-201 - Pas perdus - Not a meeting room -
  
  CERN
  
  10
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Thursday 8 January
- Plenary: accelerator baseline, upgrade options and physics&detectors status 503/1-001 - Council Chamber
  
  503/1-001 - Council Chamber
  
  CERN
  
  162
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  - 12
    
    ESPPU update 503/1-001 - Council Chamber
    
    503/1-001 - Council Chamber
    
    CERN
    
    162
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    Speaker: Karl Jakobs (University of Freiburg (DE))
    
    ESPP_LCF_workshop_2026.01.08.pdf
  - 13
    
    Start-to-end simulations for ILC & CLIC 503/1-001 - Council Chamber
    
    503/1-001 - Council Chamber
    
    CERN
    
    162
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    Speaker: Andrea Latina (CERN)
    
    Latina_Linear_Collider_at_CERN_2026.pdf
  - 14
    
    Accelerator design & integration considerations for a LinearCollider@CERN 503/1-001 - Council Chamber
    
    503/1-001 - Council Chamber
    
    CERN
    
    162
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    Speaker: Dr Benno List (Deutsches Elektronen-Synchrotron (DE))
    
    ADI_for_LCF_260108.pdf
    
    ADI_for_LCF_260108.pptx
  - 15
    
    BDS for a Linear Collider @ CERN 503/1-001 - Council Chamber
    
    503/1-001 - Council Chamber
    
    CERN
    
    162
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    Speaker: Rogelio Tomas Garcia (CERN)
    
    Slides
  - 16
    
    CFS conventional facilities & siting for a LinearCollider at CERN 503/1-001 - Council Chamber
    
    503/1-001 - Council Chamber
    
    CERN
    
    162
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    Speaker: Edward Fraser MacTavish (CERN)
    
    LC @ CERN 2026.pdf
    
    LC @ CERN 2026.pptx
  - 17
    
    Positron source for a linear collider: status and plans 503/1-001 - Council Chamber
    
    503/1-001 - Council Chamber
    
    CERN
    
    162
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    Speaker: Steffen Doebert (CERN)
    
    LCVworkshopJanuary2026.pdf
    
    LCVworkshopJanuary2026.pptx
  - 10:45
    
    Coffee 61/1-201 - Pas perdus - Not a meeting room - (CERN)
    
    61/1-201 - Pas perdus - Not a meeting room -
    
    CERN
    
    10
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  - 18
    
    Upgrades to higher energies - C3 & and SRF-based 503/1-001 - Council Chamber
    
    503/1-001 - Council Chamber
    
    CERN
    
    162
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    Speakers: Emilio Alessandro Nanni, Emilio Nanni, Emilio Nanni (Unknown), Emilio Nanni (SLAC National Accelerator Laboratory)
    
    RF Energy Upgrade.pdf
    
    RF Energy Upgrade.pptx
  - 19
    
    Upgrades to highest energies - wakefield acceleration 503/1-001 - Council Chamber
    
    503/1-001 - Council Chamber
    
    CERN
    
    162
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    Speaker: Marlene Turner (CERN)
    
    2026-01-08 LCF wakefield upgrade_v3.pdf
    
    2026-01-08 LCF wakefield upgrade_v3.pptx
  - 20
    
    Upgrades to highest luminosities (ERL-based schemes) 503/1-001 - Council Chamber
    
    503/1-001 - Council Chamber
    
    CERN
    
    162
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    Speaker: Peter Williams
    
    LC@CERN ERL - Williams_20260107_additional.pdf
    
    LC@CERN ERL - Williams_20260107.pdf
    
    LC@CERN ERL - Williams_20260107.pptx
  - 21
    
    Gamma-Gamma Collider Option 503/1-001 - Council Chamber
    
    503/1-001 - Council Chamber
    
    CERN
    
    162
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    Speaker: Tim Barklow (SLAC National Accelerator Laboratory (US))
    
    gg_collider_option_Barklow_08Jan2026.pdf
  - 22
    
    e+e- detector concepts, focus on MDI & software/computing 503/1-001 - Council Chamber
    
    503/1-001 - Council Chamber
    
    CERN
    
    162
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    Speaker: Roman Poeschl (Université Paris-Saclay (FR))
    
    talk080126.pdf
  - 23
    
    Beam dump & fixed target experiments 503/1-001 - Council Chamber
    
    503/1-001 - Council Chamber
    
    CERN
    
    162
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    Speaker: Patrick Koppenburg (Nikhef National institute for subatomic physics (NL))
    
    Koppenburg-20260108-BeyondColliders.pdf
  - 24
    
    LCF cost estimate & introduction to parallel sessions 503/1-001 - Council Chamber
    
    503/1-001 - Council Chamber
    
    CERN
    
    162
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    Speaker: Jenny List (Deutsches Elektronen-Synchrotron (DE))
    
    jlist_cost_260108.pdf
- 13:10
  
  Lunch Restaurant 1
  
  Restaurant 1
  
  CERN
- Beam Delivery Systems, Extraction Lines & IR design 61/1-007 - Room B
  
  61/1-007 - Room B
  
  CERN
  
  12
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  Conveners: Dr Angeles Faus-Golfe (IJClab IN2P3 CNRS-Université Paris-Saclay (FR)), Rogelio Tomas Garcia (CERN)
  - 25
    
    Gamma-gamma IR design
    
    Speaker: Tim Barklow (SLAC National Accelerator Laboratory (US))
    
    gg_IR_design_Barklow_08Jan2026.pdf
  - 26
    
    First look at a 10 TeV CoM BDS design
    
    Speaker: Keegan Everett Downham (Univ. of California Santa Barbara (US))
    
    LC_CERN_2026_10TeV_FFS.pdf
  - 27
    
    FFS chromaticity correction for the Ghost collider
    
    Speaker: Bamunuvita Gamage (Jlab)
    
    FFS chromaticity correction for the Ghost collider.pdf
  - 28
    
    Tools for the Beam Delivery System Design
    
    Speaker: Conrad Caliari
    
    CLIC_SimulationToolchain.pdf
- CFS conventional facilities & siting 42/R-032
  
  42/R-032
  
  CERN
  
  12
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  Conveners: Carlo Rossi (CERN), Edward Fraser MacTavish (CERN)
  
  WG report CFS Conventional Facilities & Siting 09-01-26.pdf
  
  WG report CFS Conventional Facilities & Siting 09-01-26.pptx
- Detector (focus on MDI / concept simulation) 503/1-001 - Council Chamber
  
  503/1-001 - Council Chamber
  
  CERN
  
  162
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  Conveners: Aidan Robson (University of Glasgow (GB)), Frank-Dieter Gaede (Deutsches Elektronen-Synchrotron (DE)), Roman Poeschl (Université Paris-Saclay (FR))
  
  survey-lcevent-jan26_compiled.pptx
- JOINT AD&I accelerator design and parameters + CFS conventional facilities & siting 4/3-001
  
  4/3-001
  
  CERN
  
  18
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  Conveners: Dr Benno List (Deutsches Elektronen-Synchrotron (DE)), Erik Adli (University of Oslo (NO))
  - 29
    
    AD&I accelerator design and parameters 4/3-001
    
    4/3-001
    
    CERN
    
    18
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  - 30
    
    Joint with " Upgrade Options - wakefield accelerators" 4/S-030
    
    4/S-030
    
    CERN
    
    30
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- Positron source 4/3-004 - TH Discussion Room
  
  4/3-004 - TH Discussion Room
  
  CERN
  
  10
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  Conveners: Gudrid Moortgat-Pick, Steffen Doebert (CERN)
  
  LCPositronSources.key
  
  LCPositronSources.pdf
- Upgrade Options (highE-RF, highE-WA, highL, gammagamma) 4/S-030
  
  4/S-030
  
  CERN
  
  30
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  Conveners: Emilio Nanni (SLAC National Accelerator Laboratory), Marlene Turner (CERN), Tim Barklow (SLAC National Accelerator Laboratory (US))
  
  LCFsummaryday2.odp
  
  LCFsummaryday2.pdf
  - 31
    
    Introduction & Goal of the Discussion
  - 32
    
    Discussion: SRF
  - 33
    
    Discussion: CLIC, C3
  - 34
    
    Discussion: Wakefield Accelerators
    
    2026-01-08 _ CERN _ 10 TeV Collider.pdf
    
    2026 LC CERN ALiVE.pdf
    
    CLIC_Upgrade_slide (003).pdf
    
    ILC_Upgrade_slide.pdf
    
    LCF_Discussion_ ALEGRO.pdf
- Main linac technologies - SRF & CLIC & HL-RF & …: State-of-the-art and potential workplan discussion 53/R-044
  
  53/R-044
  
  CERN
  
  12
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  Conveners: Marc Wenskat, Walter Wuensch (CERN)
- 16:30
  
  Coffee Break 61/1-201 - Pas perdus - Not a meeting room
  
  61/1-201 - Pas perdus - Not a meeting room
  
  CERN
- Plenary: intermediate working group reports 503/1-001 - Council Chamber
  
  503/1-001 - Council Chamber
  
  CERN
  
  162
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  LCatCERN_statement_v3.pdf
  
  WG_ADI_summary_midterm.pdf
  
  WG_ADI_summary_midterm.pptx
Friday 9 January
- Beyond Collider 4/3-004 - TH Discussion Room
  
  4/3-004 - TH Discussion Room
  
  CERN
  
  10
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  Conveners: Ivo Schulthess (ETH Zurich), Patrick Koppenburg (Nikhef National institute for subatomic physics (NL))
  
  LCVision_BeyondColliderProgram.pdf
- JOINT AD&I accelerator design and parameters + CFS conventional facilities & siting 4/3-001
  
  4/3-001
  
  CERN
  
  18
  Show room on map
  
  Conveners: Dr Benno List (Deutsches Elektronen-Synchrotron (DE)), Erik Adli (University of Oslo (NO))
- Main linac technologies - SRF & CLIC & HL-RF & … 53/R-044
  
  53/R-044
  
  CERN
  
  12
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  Conveners: Marc Wenskat, Marc Wenskat, Walter Wuensch (CERN)
- Priorities for sharpening the LC Physics case 503/1-001 - Council Chamber
  
  503/1-001 - Council Chamber
  
  CERN
  
  162
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  Conveners: Graham Wilson (The University of Kansas (US)), Juergen Reuter (DESY Hamburg, Germany), Dr Junping Tian (The University of Tokyo), Marcel Vos (IFIC Valencia (ES))
  - 35
    
    Introductory Remarks
    
    Speaker: Graham Wilson (The University of Kansas (US))
    
    LCatCERN1-GWW_V1.pdf
  - 36
    
    Physics studies for 10 TeV plasma based linear colliders
    
    Speaker: Simon Knapen
    
    wakefield_talk_01_08.pdf
  - 37
    
    New physics potential of TeV-scale colliders
    
    Speaker: Aleksander Zarnecki (University of Warsaw (PL))
    
    lcvision_jan2026_v4.pdf
  - 38
    
    Top physics perspectives
    
    Speaker: Marcel Vos (IFIC Valencia (ES))
    
    TopFutureCollider.pdf
  - 39
    
    Electroweak physics perspectives
    
    Speaker: Graham Wilson (The University of Kansas (US))
    
    LCatCERN-EW-GWW_V1.pdf
  - 10:30
    
    Coffee Break
  - 40
    
    Improving the Higgs self-coupling analysis
    
    Speaker: Julie Munch Torndal (CERN)
    
    LC@CERN_Torndal.pdf
  - 41
    
    Probing new physics using 2-fermion topologies at LC featuring beam polarization and high energy reach
    
    Speaker: Roman Poeschl (Université Paris-Saclay (FR))
    
    talk090126.pdf
  - 42
    
    Impact of quark flavor violating SUSY on h(125) decays at future lepton colliders
    
    Speaker: Keisho Hidaka
    
    Hidaka_h125@LCF@CERN_WS2026_Final_1.pdf
    
    Hidaka_h125@LCF@CERN_WS2026_Final_1.pptx
  - 43
    
    Probing Dark Matter at Linear Colliders Using Extended Higgs Sectors
    
    Speaker: Juhi Dutta
    
    LC@CERN_Juhi.pdf
  - 44
    
    Discussion
- Upgrade Options (highE-RF, highE-WA, highL, gammagamma) 4/S-030
  
  4/S-030
  
  CERN
  
  30
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  Conveners: Emilio Nanni (SLAC National Accelerator Laboratory), Marlene Turner (CERN), Tim Barklow (SLAC National Accelerator Laboratory (US))
  
  LCFsummaryday2.odp
  
  LCFsummaryday2.pdf
  - 45
    
    Reminder of the Scope
  - 46
    
    Discussion: Wakefield Accelerators
  - 47
    
    Discussion: ERL
    
    ERcollider-Issues-LCFWS-yokoya-v1.pdf
    
    ERcollider-Issues-LCFWS-yokoya-v1.pptx
    
    LC@CERN ERL R&D.pdf
    
    LC@CERN ERL R&D.pptx
  - 48
    
    Discussion: Gamma, gamma
    
    upgrade_option_gg_Barklow_09Jan2026.pdf
  - 49
    
    Work Plan + Prioritizing
- 10:30
  
  Coffee 503/1-001 - Council Chamber
  
  503/1-001 - Council Chamber
  
  CERN
  
  162
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  In pas perdus
- JOINT AD&I accelerator design and parameters + CFS conventional facilities & siting: Coffee break (by Council Chamber)
- JOINT AD&I accelerator design and parameters + CFS conventional facilities & siting: Preparing priorities and timelines
- 12:00
  
  Lunch Restaurant 1
  
  Restaurant 1
  
  CERN
- Plenary 503/1-001 - Council Chamber
  
  503/1-001 - Council Chamber
  
  CERN
  
  162
  Show room on map
  - 50
    
    WG report: AD&I accelerator design and parameters
    
    Speakers: Dr Benno List (Deutsches Elektronen-Synchrotron (DE)), Erik Adli (University of Oslo (NO))
    
    ADI_Workplan_260109.pdf
    
    ADI_Workplan_260109.pptx
  - 51
    
    WG report: Main linac technologies - SRF & CLIC & HL-RF
    
    Speakers: Marc Wenskat, Walter Wuensch (CERN)
    
    MTL_WG.pdf
    
    MTL_WG.pptx
  - 52
    
    WG report: Beam Delivery Systems, Extraction Lines & IR design
    
    Speakers: Dr Angeles Faus-Golfe (IJClab IN2P3 CNRS-Université Paris-Saclay (FR)), Rogelio Tomas Garcia (CERN)
    
    LC-BDS-summary.pptx
  - 53
    
    WG report: Upgrade options
    
    Speakers: Emilio Alessandro Nanni, Emilio Nanni (Unknown), Marlene Turner (CERN)
    
    WP4 Upgrade Summary.pdf
    
    WP4 Upgrade Summary.pptx
  - 54
    
    Minute of silence for Crans-Montana
  - 55
    
    WG report: CFS conventional facilities & siting
    
    Speakers: Edward Fraser MacTavish (CERN), John Andrew Osborne (CERN)
    
    WG report CFS Conventional Facilities & Siting 09-01-26.pdf
    
    WG report CFS Conventional Facilities & Siting 09-01-26.pptx
  - 56
    
    WG report: Positron source
    
    Speakers: Gudrid Moortgat-Pick, Steffen Doebert (CERN)
    
    LCPositronSources-sum.pdf
    
    LCPositronSources-sum.pptx
  - 57
    
    WG report: Detector
    
    Speakers: Aidan Robson (University of Glasgow (GB)), Frank-Dieter Gaede (Deutsches Elektronen-Synchrotron (DE)), Roman Poeschl (Université Paris-Saclay (FR))
    
    detectorWGreport260109_v1.pptx
  - 58
    
    WG report: Sharpening the physics case
    
    Speakers: Graham Wilson (The University of Kansas (US)), Juergen Reuter (DESY Hamburg, Germany), Dr Junping Tian (The University of Tokyo)
    
    LCatCERN2_GWW-Summary_V1.pdf
  - 59
    
    WG report: Beyond colliders
    
    Speakers: Ivo Schulthess (ETH Zurich), Patrick Koppenburg (Nikhef National institute for subatomic physics (NL))
    
    LCVision_BeyondColliderReport.pdf
  - 60
    
    Community organisation, way forward
- Executive session (closed) 503/1-001 - Council Chamber
  
  503/1-001 - Council Chamber
  
  CERN
  
  162
  Show room on map
  
  LCVision Editorial Board, IDT Executive Board, CLIC Accelerator Steering Committee, parallel session conveners
  
  jlist_exsec_260107.pdf

Linear Collider@CERN Workshop 2026

503/1-001 - Council Chamber

CERN

503/1-001 - Council Chamber

CERN

Restaurant 1

CERN

503/1-001 - Council Chamber

CERN

503/1-001 - Council Chamber

CERN

503/1-001 - Council Chamber

CERN

503/1-001 - Council Chamber

CERN

503/1-001 - Council Chamber

CERN

503/1-001 - Council Chamber

CERN

503/1-001 - Council Chamber

CERN

61/1-201 - Pas perdus - Not a meeting room -

CERN

503/1-001 - Council Chamber

CERN

503/1-001 - Council Chamber

CERN

503/1-001 - Council Chamber

CERN

503/1-001 - Council Chamber

CERN

503/1-001 - Council Chamber

CERN

61/1-201 - Pas perdus - Not a meeting room -

CERN

503/1-001 - Council Chamber

CERN

503/1-001 - Council Chamber

CERN

503/1-001 - Council Chamber

CERN

503/1-001 - Council Chamber

CERN

503/1-001 - Council Chamber

CERN

503/1-001 - Council Chamber

CERN

503/1-001 - Council Chamber

CERN

61/1-201 - Pas perdus - Not a meeting room -

CERN

503/1-001 - Council Chamber

CERN

503/1-001 - Council Chamber

CERN

503/1-001 - Council Chamber

CERN

503/1-001 - Council Chamber

CERN

503/1-001 - Council Chamber

CERN

503/1-001 - Council Chamber

CERN

503/1-001 - Council Chamber

CERN

Restaurant 1

CERN

61/1-007 - Room B

CERN

42/R-032

CERN

503/1-001 - Council Chamber

CERN

4/3-001

CERN

4/3-001

CERN

4/S-030

CERN

4/3-004 - TH Discussion Room