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

Linear Collider@CERN Workshop 2026

from Wednesday, 7 January 2026 (09:00) to Friday, 9 January 2026 (19:30)

Monday, 5 January 2026
Tuesday, 6 January 2026
Wednesday, 7 January 2026

11:00 Executive session (closed)

11:00 - 13:00
Room: 503/1-001 - Council Chamber

13:00 Lunch
Lunch
13:00 - 14:00
Room: Restaurant 1
14:00 Opening Plenary: EPPSU reports, overview and strategic talks
14:00 - 18:15
Room: 503/1-001 - Council Chamber
Contributions

14:00 Welcome - Mark Thomson (CERN)

14:10 Charge to Linear Collider at CERN study and/or the Workshop - Jenny List (Deutsches Elektronen-Synchrotron (DE))

14:25 Physics case of linear colliders - what we know and what we don’t know - Junping Tian (The University of Tokyo)

14:55 ITN status and how it could contribute to LinearCollider at CERN study - Shinichiro MICHIZONO (KEK)

15:15 CLICX X-band and two-beam technology outlook - Walter Wuensch (CERN)

15:35 CLIC & ILC: main linacs, BDS and IP parameters - differences and commonalities - Daniel Schulte (CERN)

16:30 ATF2 status & plans - Toshiyuki Okugi

16:50 US Priorities for Future Collider Accelerator R&D - Spencer Gessner Spencer Gessner (SLAC)

17:10 Japan’s take on LinearCollider at CERN - Masaya Ishino (University of Tokyo (JP))

17:30 Status of CEPC and thoughts on a linear collider - Jie Gao (Institute of High Energy Physics, Chinese Academy of Sciences (CN))

17:50 A linear collider at CERN: Workplan for 2026-28 - Steinar Stapnes (CERN)
18:30 Reception

18:30 - 20:00
Room: 61/1-201 - Pas perdus - Not a meeting room -
Thursday, 8 January 2026
09:00 Plenary: accelerator baseline, upgrade options and physics&detectors status
09:00 - 13:10
Room: 503/1-001 - Council Chamber
Contributions

09:00 ESPPU update - Karl Jakobs (University of Freiburg (DE))

09:25 Start-to-end simulations for ILC & CLIC - Andrea Latina (CERN)

09:40 Accelerator design & integration considerations for a LinearCollider@CERN - Benno List (Deutsches Elektronen-Synchrotron (DE))

10:00 BDS for a Linear Collider @ CERN - Rogelio Tomas Garcia (CERN)

10:15 CFS conventional facilities & siting for a LinearCollider at CERN - Edward Fraser MacTavish (CERN)

10:30 Positron source for a linear collider: status and plans - Steffen Doebert (CERN)

11:10 Upgrades to higher energies - C3 & and SRF-based - Emilio Alessandro Nanni Emilio Nanni Emilio Nanni (Unknown) Emilio Nanni (SLAC National Accelerator Laboratory)

11:25 Upgrades to highest energies - wakefield acceleration - Marlene Turner (CERN)

11:40 Upgrades to highest luminosities (ERL-based schemes) - Peter Williams

12:00 Gamma-Gamma Collider Option - Tim Barklow (SLAC National Accelerator Laboratory (US))

12:15 e+e- detector concepts, focus on MDI & software/computing - Roman Poeschl (Université Paris-Saclay (FR))

12:35 Beam dump & fixed target experiments - Patrick Koppenburg (Nikhef National institute for subatomic physics (NL))

12:50 LCF cost estimate & introduction to parallel sessions - Jenny List (Deutsches Elektronen-Synchrotron (DE))
13:10 Lunch
Lunch
13:10 - 14:00
Room: Restaurant 1
14:00 Beam Delivery Systems, Extraction Lines & IR design
14:00 - 16:30
Room: 61/1-007 - Room B
Contributions

14:00 Gamma-gamma IR design - Tim Barklow (SLAC National Accelerator Laboratory (US))

14:20 First look at a 10 TeV CoM BDS design - Keegan Everett Downham (Univ. of California Santa Barbara (US))

14:45 FFS chromaticity correction for the Ghost collider - Bamunuvita Gamage (Jlab)

15:05 Tools for the Beam Delivery System Design - Conrad Caliari
CFS conventional facilities & siting

14:00 - 16:30
Room: 42/R-032

Detector (focus on MDI / concept simulation)

14:00 - 16:30
Room: 503/1-001 - Council Chamber
JOINT AD&I accelerator design and parameters + CFS conventional facilities & siting
14:00 - 16:30
Room: 4/3-001
Contributions

14:00 AD&I accelerator design and parameters

15:30 Joint with " Upgrade Options - wakefield accelerators"
Positron source

14:00 - 16:30
Room: 4/3-004 - TH Discussion Room
Upgrade Options (highE-RF, highE-WA, highL, gammagamma)
14:00 - 16:30
Room: 4/S-030
Contributions

14:00 Introduction & Goal of the Discussion

14:30 Discussion: SRF

15:00 Discussion: CLIC, C3

15:30 Discussion: Wakefield Accelerators
15:00 Main linac technologies - SRF & CLIC & HL-RF & …: State-of-the-art and potential workplan discussion
State-of-the-art and potential workplan discussion
15:00 - 16:30
Room: 53/R-044

16:30 Coffee Break
Coffee Break
16:30 - 17:00
Room: 61/1-201 - Pas perdus - Not a meeting room

17:00 Plenary: intermediate working group reports

17:00 - 18:00
Room: 503/1-001 - Council Chamber
Friday, 9 January 2026

09:00 Beyond Collider

09:00 - 12:00
Room: 4/3-004 - TH Discussion Room

JOINT AD&I accelerator design and parameters + CFS conventional facilities & siting

09:00 - 10:30
Room: 4/3-001

Main linac technologies - SRF & CLIC & HL-RF & …

09:00 - 12:00
Room: 53/R-044
Priorities for sharpening the LC Physics case
09:00 - 12:00
Room: 503/1-001 - Council Chamber
Contributions

09:00 Introductory Remarks - Graham Wilson (The University of Kansas (US))

09:10 Physics studies for 10 TeV plasma based linear colliders - Simon Knapen

09:30 New physics potential of TeV-scale colliders - Aleksander Zarnecki (University of Warsaw (PL))

09:50 Top physics perspectives - Marcel Vos (IFIC Valencia (ES))

10:10 Electroweak physics perspectives - Graham Wilson (The University of Kansas (US))

11:00 Improving the Higgs self-coupling analysis - Julie Munch Torndal (CERN)

11:08 Probing new physics using 2-fermion topologies at LC featuring beam polarization and high energy reach - Roman Poeschl (Université Paris-Saclay (FR))

11:16 Impact of quark flavor violating SUSY on h(125) decays at future lepton colliders - Keisho Hidaka

11:24 Probing Dark Matter at Linear Colliders Using Extended Higgs Sectors - Juhi Dutta

11:32 Discussion
Upgrade Options (highE-RF, highE-WA, highL, gammagamma)
09:00 - 12:00
Room: 4/S-030
Contributions

09:00 Reminder of the Scope

09:15 Discussion: Wakefield Accelerators

10:00 Discussion: ERL

10:30 Discussion: Gamma, gamma

11:00 Work Plan + Prioritizing
10:30 Coffee
Coffee
10:30 - 11:00
Room: 503/1-001 - Council Chamber

JOINT AD&I accelerator design and parameters + CFS conventional facilities & siting: Coffee break (by Council Chamber)
Coffee break (by Council Chamber)
10:30 - 11:00

11:00 JOINT AD&I accelerator design and parameters + CFS conventional facilities & siting: Preparing priorities and timelines
Preparing priorities and timelines
11:00 - 12:00

12:00 Lunch
Lunch
12:00 - 13:00
Room: Restaurant 1
13:00 Plenary
13:00 - 16:01
Room: 503/1-001 - Council Chamber
Contributions

13:00 WG report: AD&I accelerator design and parameters - Benno List (Deutsches Elektronen-Synchrotron (DE)) Erik Adli (University of Oslo (NO))

13:15 WG report: Main linac technologies - SRF & CLIC & HL-RF - Marc Wenskat Walter Wuensch (CERN)

13:30 WG report: Beam Delivery Systems, Extraction Lines & IR design - Angeles Faus-Golfe (IJClab IN2P3 CNRS-Université Paris-Saclay (FR)) Rogelio Tomas Garcia (CERN)

13:45 WG report: Upgrade options - Emilio Alessandro Nanni Emilio Nanni (Unknown) Marlene Turner (CERN)

14:00 Minute of silence for Crans-Montana

14:01 WG report: CFS conventional facilities & siting - Edward Fraser MacTavish (CERN) John Andrew Osborne (CERN)

14:11 WG report: Positron source - Gudrid Moortgat-Pick Steffen Doebert (CERN)

14:21 WG report: Detector - Aidan Robson (University of Glasgow (GB)) Frank-Dieter Gaede (Deutsches Elektronen-Synchrotron (DE)) Roman Poeschl (Université Paris-Saclay (FR))

14:31 WG report: Sharpening the physics case - Graham Wilson (The University of Kansas (US)) Juergen Reuter (DESY Hamburg, Germany) Junping Tian (The University of Tokyo)

14:46 WG report: Beyond colliders - Ivo Schulthess (ETH Zurich) Patrick Koppenburg (Nikhef National institute for subatomic physics (NL))

14:56 Community organisation, way forward
16:10 Executive session (closed)

16:10 - 18:10
Room: 503/1-001 - Council Chamber