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HALHF: a hybrid, asymmetric, linear Higgs factory using plasma- and RF-based acceleration

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arxiv 2503.19880 v2 pith:XLCQDOKG submitted 2025-03-25 physics.acc-ph

classification physics.acc-ph
keywords halhfaccelerateaccelerationbaselinecostelectronsfactoryhiggs
verification ladder T0 review T1 audit T2 compute T3 formal
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abstract

HALHF is a hybrid linear collider that uses electron-driven plasma-wakefield acceleration to accelerate electrons to high energy while using radio-frequency cavity technology to accelerate positrons. The most cost-effective solution collides low-energy positrons with high-energy electrons, producing a boost to the final state in the electron direction with $\gamma= 1.67$. The current HALHF baseline design produces a luminosity comparable to that of the baseline ILC but with a greatly reduced construction and carbon footprint and hence much lower cost than the mature linear-collider designs ILC and CLIC. Costs for HALHF are evaluated, together with that for the approximate 15-year R\&D programme necessary to realise HALHF. Time scales and cost for the R\&D are estimated. Upgrade paths for HALHF technology from a 250~GeV Higgs factory, through 380 and 550~GeV, up to 10~TeV are sketched.

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Cited by 3 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Updated baseline design for HALHF: the hybrid, asymmetric, linear Higgs factory

    physics.acc-ph 2025-05 conditional novelty 4.0 of 10

    HALHF 2.0 presents a cost-optimized baseline for a hybrid, asymmetric plasma/RF Higgs factory with 48 plasma stages and a 5 km footprint.

  2. The ILD Detector: A Versatile Detector for an Electron-Positron Collider at Energies up to 1 TeV

    hep-ex 2025-06 conditional novelty 3.0 of 10

    The ILD concept paper presents a particle-flow-optimized detector design, its performance requirements, technology options, and readiness for both linear and circular electron-positron colliders up to 1 TeV.

  3. PWFA linear collider improvements -- from previous concepts to HALHF

    physics.acc-ph 2025-09 conditional novelty 1.0 of 10

    A summary of design changes from the 2013 PWFA-LC concept to the HALHF 2.0 baseline, containing no new results.

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