DUNE Phase II: scientific opportunities, detector concepts, technological solutions

• Published in: Journal of instrumentation 2024-12, Vol.19 (12), p.P12005
• Main Authors: Acciarri, R., Basque, V., Bersani, A., Betancur Rodríguez, A., Blazey, G.C., Bogenschuetz, J., Boissevain, J., Bomben, L., Bonini, F., Bouet, R., Branca, A., Bremer, J., Budd, H., Calvo, E., Campani, A., Charitonidis, N., Dalager, O., De Bonis, I., De Jong, P., De Romeri, V., Distefano, C., Dolek, F., Doyle, T.A., Duchesneau, D., Duyang, H., Fedoseev, D., Feng, Y., Franklin, J., Geffroy, N., Gelli, B., Gibin, D., Gollwitzer, K., Gran, R., Granados, E., Gwon, S., Hellmuth, P., Hillier, S.J., Hirsch, L.R., Kandemir, M., Kasetti, S.P., Kemularia, O., King, B., Koh, D.H., Kubota, S., Kubu, M., Lanni, F., Lopes, T.V., Luppi, E., Major, A., Marchionni, A., Marshall, C.M., Mazza, R., McConkey, N., Meddage, V.C.N., Mefodiev, A., Metallo, S., Michna, G., Mladenov, D., Montagna, E., Nachtman, J., Naples, D., Nesbit, J., Nowak, A., Pantic, E., Paramesvaran, S., Parozzi, E., Paudel, A., Penzo, A., Pickering, L., Raaf, J.L., Ray, R., Ricol, J.S., Roda, M., Rodriguez Rondon, J., Ross-Lonergan, M., Sanchez-Lucas, P., Schneider, A.W., Senadheera, D., Shchablo, K., Shi, J., Sirri, G., Sobel, H., Sotnikov, A., Stillwell, B., Sutera, C.M., Testera, G., Tosi, N., Trevor, J., Valentim, R., Varanini, F., Ventura, S., Viola, S., Warner, D., White, A., Wilson, R.J., Wu, W., Yandel, E., Zambelli, L., Zhao, M., Zhivun, E.
• Format: Article
• Language: English
• Subjects: Cryogenic detectors; Design standards; Detectors; Liquid detectors; Modules; Neutrino detectors; Neutrinos; Noble liquid detectors (scintillation, ionization, double-phase); Particle physics; Physics; Sensors; Strategy; Underground construction
• ISSN: 1748-0221
• DOI: 10.1088/1748-0221/19/12/P12005

The international collaboration designing and constructingthe Deep Underground Neutrino Experiment (DUNE) at the Long-BaselineNeutrino Facility (LBNF) has developed a two-phase strategy towardthe implementation of this leading-edge, large-scale scienceproject. The 2023 report of the US Particle Physics ProjectPrioritization Panel (P5) reaffirmed this vision and stronglyendorsed DUNE Phase I and Phase II, as did the European Strategy forParticle Physics. While the construction of the DUNE Phase I is wellunderway, this White Paper focuses on DUNE Phase II planning. DUNEPhase-II consists of a third and fourth far detector (FD) module, anupgraded near detector complex, and an enhanced 2.1 MW beam. Thefourth FD module is conceived as a “Module of Opportunity”, aimedat expanding the physics opportunities, in addition to supportingthe core DUNE science program, with more advanced technologies. Thisdocument highlights the increased science opportunities offered bythe DUNE Phase II near and far detectors, including long-baselineneutrino oscillation physics, neutrino astrophysics, and physicsbeyond the standard model. It describes the DUNE Phase II near andfar detector technologies and detector design concepts that arecurrently under consideration. A summary of key R&D goals andprototyping phases needed to realize the Phase II detector technicaldesigns is also provided. DUNE's Phase II detectors, along with theincreased beam power, will complete the full scope of DUNE, enablinga multi-decadal program of groundbreaking science with neutrinos.