Deep Underground Neutrino Experiment

Deep Underground Neutrino Experiment
Longitudinal section of the beamline for the experiment from the Main Injector
Alternative names DUNE Edit this at Wikidata
Location(s) United States
Telescope style Neutrino detector Edit this on Wikidata
Website http://www.dunescience.org/

The Deep Underground Neutrino Experiment (DUNE), formerly the Long Baseline Neutrino Experiment (LBNE), is a neutrino experiment under construction, with a near detector at Fermilab and a far detector at the Sanford Underground Research Facility that will observe neutrinos produced at Fermilab. It will fire an intense beam of trillions of neutrinos from a production facility at Fermilab (in Illinois) over a distance of 1,300 kilometers (810 mi) to an instrumented 40-kiloton volume of liquid argon located deep underground at the Sanford Lab in South Dakota. The neutrinos will travel in a straight line through the Earth, reaching about 30 kilometers (19 mi) underground near the mid-point; the far detector itself will be 1.5 kilometers (4,900 ft) under the surface).[1] About 750,000 tons of rock will be excavated to create the caverns for the far detectors.

The primary science objectives of DUNE are[2]

Funding and construction

The far detector current design is for four modules of instrumented liquid argon with a fiducial volume of 10 kilotons each. The first two modules are expected to be complete in 2024, with the beam operational in 2026. The final module is planned to be operational in 2027.[2]

Excavation of the far detector cavities began on July 21, 2017,[4] and prototype detectors are being constructed and tested at CERN.[5]

History

The project was originally started as a US-only project called LBNE; in around 2012-2014 a descope was considered with a near-surface detector to reduce cost. However, the Particle Physics Project Prioritization Panel (P5) concluded in its 2014 report that the research activity being pursued by LBNE "should be reformulated under the auspices of a new international collaboration, as an internationally coordinated and internationally funded program, with Fermilab as host".[6], reverting to a deep-underground detector. The LBNE collaboration was officially dissolved on January 30, 2015,[7] shortly after the new collaboration recommended by P5 was formed on January 22, 2015.[8] The new collaboration selected the name Deep Underground Neutrino Experiment (DUNE).[9]

References

  1. ↑ Ghosh, Pallab (15 February 2014). "UK backs huge US neutrino plan". BBC News. Retrieved 15 February 2014.
  2. 1 2 Acciarri, R.; et al. (January 22, 2016). Long-Baseline Neutrino Facility (LBNF) and Deep Underground Neutrino Experiment (DUNE) Conceptual Design Report Volume 1: The LBNF and DUNE Projects. Deep Underground Neutrino Experiment. arXiv:1601.05471. Bibcode:2016arXiv160105471A.
  3. 1 2 "DUNE: Deep Underground Neutrino Experiment". DUNE: Deep Underground Neutrino Experiment. Fermilab. Retrieved 24 March 2018.
  4. ↑ Cho, Adrian (July 21, 2017). "Excavation starts for U.S. particle physicists' next giant experiment". Science.
  5. ↑ Hesla, Leah (January 18, 2018). biggest-little-detectors "The biggest little detectors" Check |url= value (help). Symmetry Magazine.
  6. ↑ Particle Physics Project Prioritization Panel (May 2014). Ritz, Steve, ed. Building for Discovery: Strategic Plan for U.S. Particle Physics in the Global Context (Report of the Particle Physics Project Prioritization Panel (P5)). U. S. Department of Energy Office of Science and the National Science Foundation. Retrieved 26 March 2015.
  7. ↑ Strait, Jim (9 February 2015). "ELBNF and LBNF" (Presentation at All-Experimenters Meeting). Fermi National Accelerator Lab. p. 5. Retrieved 31 January 2018.
  8. ↑ Lykken, Joe (27 January 2015). "ELBNF is born". Fermilab Today. Retrieved 26 March 2015.
  9. ↑ Huber, Jennifer; Jepsen, Kathryn. "The dawn of DUNE". Symmetry Magazine. Fermilab/SLAC. Retrieved 26 March 2015.


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