%0 Electronic Article
%A Adli, Erik
%A Appleby, Joshua
%A Barklow, Timothy L.
%A Biagini, Marica
%A Svensson, Jonas Björklund
%A Berggren, Mikael
%A Bettoni, Simone
%A Boogert, Stewart
%A Burrows, Philip
%A Caldwell, Allen
%A Bin Ben Chen, Jian
%A Cilento, Vera
%A Corner, Laura
%A D'Arcy, Richard
%A Doebert, Steffen
%A Dou, Wang
%A Drobniak, Pierre
%A Dyson, Calvin
%A Farrington, Sinead
%A Farmer, John
%A Faus-Golfe, Angeles
%A Formela, Manuel
%A Formenti, Arianne
%A Forrester, Louis
%A Foster, Brian
%A Gao, Jie
%A Gessner, Spencer
%A Hamann, Niclas
%A Harrison, Alexander
%A Hogan, Mark J.
%A Hørlyk, Eir Eline
%A Kalvik, Daniel
%A Laudrain, Antoine
%A Lehe, Reme
%A Leemans, Wim
%A Lindstrøm, Carl A.
%A List, Benno
%A List, Jenny
%A Lu, Xueying
%A Mactavish, Edward
%A Maslov, Vasyl
%A Nanni, Emilio
%A Osborne, John
%A Osterhoff, Jens
%A Peña, Felipe
%A Pick, Gudrid Moortgat
%A Põder, Kristjan
%A Reuter, Jürgen
%A Samoilenko, Dmitrii
%A Sedlackova, Nela
%A Seryi, Andrei
%A Sjobak, Kyrre
%A Sloan, Terry
%A Stapnes, Steinar
%A Tomas Garcia, Rogelio
%A Titov, Maxim
%A Trautwein, Malte
%A Thévenet, Maxence
%A Walker, Nicholas J.
%A Wenskat, Marc
%A Wing, Matthew
%A Wood, Jonathan
%T HALHF: a hybrid, asymmetric, linear Higgs factory using plasma- and RF-based acceleration
%N arXiv:2503.19880
%M PUBDB-2025-05373
%M arXiv:2503.19880
%D 2025
%Z Submitted to the European Strategy for Particle Physics, 2026 Update
%X 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 γ =  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</td><td width="150">
%X D programme necessary to realise HALHF. Time scales and cost for the R</td><td width="150">
%X 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.
%F PUB:(DE-HGF)25
%9 Preprint
%R 10.3204/PUBDB-2025-05373
%U https://bib-pubdb1.desy.de/record/642160