doi:10.1103/PhysRevD.107.112006engAgnes, P.Ahmad, I.Albergo, S.Albuquerque, I.F.M.Alexander, T.Alton, A.K.Amaudruz, P.Atzori Corona, M.Auty, D.J.Ave, M.Avetisov, I.Ch.Avetisov, R.I.Azzolini, O.Back, H.O.Balmforth, Z.Barbarian, V.Barrado Olmedo, A.Barrillon, P.Basco, A.Batignani, G.Berzin, E.Bondar, A.Bonivento, W.M.Borisova, E.Bottino, B.Boulay, M.G.Buccino, G.Bussino, S.Busto, J.Buzulutskov, A.Cadeddu, M.Cadoni, M.Caminata, A.Canci, N.Capra, A.Caprioli, S.Caravati, M.Cárdenas-Montes, M.Cargioli, N.Carlini, M.Castello, P.Cataudella, V.Cavalcante, P.Cavuoti, S.Cebrian, S.Cela Ruiz, J.M.Chashin, S.Chepurnov, A.Chyhyrynets, E.Cicalò, C.Cifarelli, L.Cintas, D.Cocco, V.Conde Vilda, E.Consiglio, L.Copello, S.Covone, G.Cross, S.Czubak, M.D’Aniello, M.D’Auria, S.Da Rocha Rolo, M.D.Dadoun, O.Daniel, M.Davini, S.De Candia, A.De Cecco, S.De Falco, A.De Filippis, G.De Gruttola, D.De Pasquale, S.De Rosa, G.Dellacasa, G.Derbin, A.V.Devoto, A.Di Capua, F.Di Noto, L.Di Stefano, P.Dionisi, C.Dolganov, G.Dordei, F.Doria, L.Erjavec, T.Fernandez Diaz, M.Fiorillo, G.Franceschi, A.Franchini, P.Franco, D.Frolov, E.Funicello, N.Gabriele, F.Gahan, D.Galbiati, C.Gallina, G.Gallus, G.Garbini, M.Garcia Abia, P.Gendotti, A.Ghiano, C.Giampaolo, R.A.Giganti, C.Giorgi, M.A.Giovanetti, G.K.Goicoechea Casanueva, V.Gola, A.Gorman, D.Graciani Diaz, R.Grauso, G.Grilli di Cortona, G.Grobov, A.Gromov, M.Guan, M.Guerzoni, M.Gulino, M.Guo, C.Hackett, B.¿R.Hall, J.B.Hallin, A.L.Hamer, A.Helton, H.Haranczyk, M.Hessel, T.Hill, S.Horikawa, S.Hubaut, F.Hugues, T.Hungerford, E.V.Ianni, An.Ippolito, V.Jillings, C.La Commara, M.Lai, M.Le Guirriec, E.Leason, E.Longo, G.Luzzi, L.Margotti, A.Mari, S.M.Mariani, C.Marini, A.Martínez, M.Masoni, A.Mazzi, A.McDonald, A.¿B.Messina, A.Monroe, J.Morrocchi, M.Muscas, C.Musico, P.Nania, R.Napolitano, T.Nessi, M.Organtini, P.Ortiz de Solórzano, A.Pagani, L.Pallavicini, M.Pandola, L.Paoloni, E.Paternoster, G.Pegoraro, P.A.Pellegrino, C.Perotti, F.Pesudo, V.Piacentini, S.Pietropaolo, F.Pino, N.Pira, C.Pocar, A.Pralavorio, P.Price, D.Raffaelli, F.Ragusa, F.Ramachers, Y.Ramirez, A.Razeti, M.Razeto, A.Rescigno, M.Resnati, F.Retiere, F.Rignanese, L.P.Ripoli, C.Rivetti, A.Roberts, A.Roberts, C.Rode, J.Rogers, G.Romero, L.Rossi, M.Saffold, T.R.Samoylov, O.Sandford, E.Sanfilippo, S.Santone, D.Santorelli, R.Savarese, C.Scapparone, E.Scioli, G.Shchagin, A.Sheshukov, A.Simeone, M.Smith, B.Stefanizzi, R.Steri, A.Tartaglia, R.Taylor, A.Taylor, J.Tedesco, S.Testera, G.Thieme, K.Thorpe, T.¿N.Tonazzo, A.Torres-Lara, S.Viel, S.Sensitivity projections for a dual-phase argon TPC optimized for light dark matter searches through the ionization channelART-2023-134081Dark matter lighter than 10  GeV/c2 encompasses a promising range of candidates. A conceptual design for a new detector, DarkSide-LowMass, is presented, based on the DarkSide-50 detector and progress toward DarkSide-20k, optimized for a low-threshold electron-counting measurement. Sensitivity to light dark matter is explored for various potential energy thresholds and background rates. These studies show that DarkSide-LowMass can achieve sensitivity to light dark matter down to the solar neutrino fog for GeV-scale masses and significant sensitivity down to 10  MeV/c2 considering the Migdal effect or interactions with electrons. Requirements for optimizing the detector’s sensitivity are explored, as are potential sensitivity gains from modeling and mitigating spurious electron backgrounds that may dominate the signal at the lowest energies.2023http://zaguan.unizar.es/record/12660510.1103/PhysRevD.107.112006http://zaguan.unizar.es/record/126605oai:zaguan.unizar.es:126605info:eu-repo/grantAgreement/EC/H2020/952480/EU/Novel technologies for dark matter search and frontier astroparticle physics experiments/DarkWaveThis project has received funding from the European Union’s Horizon 2020 research and innovation program under grant agreement No H2020 952480-DarkWaveinfo:eu-repo/grantAgreement/ES/MICINN/PID2019-109374GB-I00Physical Review D 107, 11 (2023), 112006 [19 pp.]All rights reservedhttp://www.europeana.eu/rights/rr-f/info:eu-repo/semantics/openAccess