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Stepan Bulanov (Lawrence Berkeley National Laboratory)12/11/2026, 11:00Upgrades with Advanced Accelerator TechnologiesOral presentation (remote)
A gamma-gamma collider capable of reaching the multi-TeV frontier of particle physics may enable the study of phenomena beyond the Standard Model. Based on compact linear wakefield accelerator technology, such a collider could be realized by Compton scattering multi-TeV lepton beams off moderate-intensity laser pulses close to the collider interaction point, producing the required...
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Vladimir Litvinenko (Stony Brook Univeristy)12/11/2026, 11:20Upgrades with Advanced Accelerator TechnologiesOral presentation (remote)
I will present our studies of linear collider e+e- collider recycling both the used particles and the beam energy. After each collision particles are decelerated and cooled in damping rings. Recycling collided particles and their energy opens path to very high luminosity O(1036) cm-2 sec-1. ReLiC will be able to collide highly polarized electrons and positrons. The main challenges of such...
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Tim Barklow (SLAC National Accelerator Laboratory (US))12/11/2026, 11:40Upgrades with Advanced Accelerator TechnologiesOral presentation (onsite)
Photon-photon (γγ) Compton colliders offer compelling, high-efficiency pathways to explore the fundamental building blocks of matter without the technological bottlenecks associated with high-intensity positron sources and plasma-based positron acceleration. Furthermore, γγ Compton colliders operating in a narrow-band energy configuration can offer, in many circumstances, additional...
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Miho Shimada (KEK)12/11/2026, 12:00Upgrades with Advanced Accelerator TechnologiesOral presentation (onsite)
Energy recovery linac, ERL is promising scheme for high-luminosity colliders with reasonable construction costs and power supply. A racetrack-type ERL accelerator is proposed as a compact electron -positron collider at the Z-pole. The circumference is approximately 6 km. It is assumed to be located at the Tsukuba campus of KEK.
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Carl Andreas Lindstrom12/11/2026, 14:00Upgrades with Advanced Accelerator TechnologiesOral presentation (remote)
The hybrid, asymmetric, linear Higgs factory (HALHF) is a plasma-based collider concept that combines plasma-wakefield acceleration (PWFA) of electrons and radio-frequency (RF) acceleration of positrons for asymmetric-energy collisions at 250 to 550 GeV. This has the potential to overcome the positron problem in PWFA, and provide a cost-effective collider with a reduced footprint. We report on...
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Lucy Bishop (DESY)12/11/2026, 14:20Upgrades with Advanced Accelerator TechnologiesOral presentation (remote)
HALHF is a proposed hybrid linear collider with highly asymmetric beam energies. WarpX, a Particle-In-Cell (PIC) code capable of self-consistently simulating beam-beam effects, including beamstrahlung, has been used to characterise the luminosity spectrum expected at HALHF for three different baseline designs with centre of mass energies of 250 GeV, 380 GeV and 550 GeV. The resulting...
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Marcel Hohmann (DESY)12/11/2026, 14:40Upgrades with Advanced Accelerator TechnologiesOral presentation (onsite)
Plasma-based accelerators can produce accelerating fields several orders of magnitude stronger than those of conventional accelerators. They operate by driving density waves in a plasma using compact particle beams or laser pulses. The resulting strong wakefields are then used to accelerate a trailing electron bunch. The FLASHForward experiment at DESY performs fundamental research on this...
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Peter Williams12/11/2026, 16:00Upgrades with Advanced Accelerator TechnologiesOral presentation (remote)
A 550 GeV centre-of-mass Higgs factory is presented, the Linear Ghost Collider (LGC). Acceleration and deceleration is performed within an SRF linac where the bunches transported are net neutral, termed ghost bunches. Within these, one charge partner accelerates, and the other decelerates. In this way energy is recovered after collision, and all particles recycled. An accompanying plenary...
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Abe Tetsuo (KEK)12/11/2026, 16:20Upgrades with Advanced Accelerator TechnologiesOral presentation (onsite)
A gravity-aligned vertical electron-positron linear collider is proposed as a concept to break the cost-and-scale impasse that confronts conventional horizontal Higgs factories [KEK Preprint 2026-16, arXiv:2607.24179]. The accelerating axis is oriented along the local gravitational field inside a single deep vertical shaft with a depth of ~3 km. Positrons are injected downward from the surface...
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Erik Adli (University of Oslo (NO))12/11/2026, 16:40Upgrades with Advanced Accelerator TechnologiesOral presentation (onsite)
Plasma wakefield acceleration offers a pathway to compact linacs, but stringent angular tolerances and transverse instabilities pose significant challenges. This paper presents a combined approach of active drive beam guiding and stage betatron length matching to mitigate these effects. Using analytical modelling and PIC simulations based on the HALHF baseline parameters, a reduction of the...
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Masaki Kando (Kansai Instiute for Photon Science, Naitonal Institutes for Quantum Science and Technology)12/11/2026, 17:00Upgrades with Advanced Accelerator TechnologiesOral presentation (onsite or remote - not decided)
The advent of high-peak-power laser technology [1] has enabled compact charged-particle acceleration with a higher acceleration gradient than conventional RF accelerators. One of the most promising schemes is laser wakefield acceleration of electrons [2], and significant progress has been made in achieving 10 GeV energy [3], a few-fs pulse duration [4], a transverse emittance of <1 mm-mrad...
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