As of July 2014, more than 525 scientists and engineers from more than 90 institutions participate in the LBNE Science Collaboration, led by cospokespersons Bob Wilson (CSU) and Milind Diwan (BNL). The collaborators come from universities and national laboratories, including collaborators from the United States, India, Italy, Japan, Brazil and the UK.
A 35-ton prototype cryostat has demonstrated that a non-evacuable "membrane" cryostat, the type chosen for the LBNE far detector, can satisfy the liquid argon purity requirement. A second phase of testing, currently in preparation, will focus on the performance of the active detector elements. In the image, the pvc frame represents the interior of the cryostat; it will be used to mock up the installation of the detector components prior to bringing them to Fermilab.
Fermilab's Main Injector produces the world's highest-intensity neutrino beam. Scientists plan to send the beam to the proposed Sanford laboratory. A planned accelerator upgrade, called PIP-II, would dramatically increase the intensity of the neutrino beam and provide proton beams for other experiments, too.
Over 525 people from 90 institutions, including 139 from 35 institutions in eight non-U.S. countries, participate in the Long-Baseline Neutrino Experiment (LBNE), working together to plan and develop both the experimental facilities and the physics program.
The physics program The experiment will provide a unique, world-leading program for the exploration of key questions at the forefront of particle physics and astrophysics. Chief among its potential discoveries is that of matter-antimatter symmetry violation in neutrino flavor mixing — a step toward unraveling the mystery of matter generation in the early universe. Independently, the experiment's determination of the neutrino mass ordering and precise measurement of neutrino mixing parameters may reveal new fundamental symmetries of Nature.
How will the experiment work? The experiment will send the world's highest-intensity neutrino beam 800 miles through the Earth's mantle to a large detector, a multi-kiloton volume of liquid argon instrumented such that it can record interactions between neutrinos and this target material. Neutrinos are harmless and can pass right through matter, only very rarely colliding with other matter particles. Therefore, no tunnel is needed; the vast majority of the neutrinos will pass through the mantle's material, and in turn, right through the detector. Because neutrinos interact so rarely, the experiment will need to collect data for a decade or two in order to observe enough interactions to achieve its scientific objectives.
Fermilab, in Batavia, IL, is the host laboratory and the site of LBNE's future beamline, and the Sanford Underground Research Facility, in Lead, SD, is the site currently selected to house the massive far detector. The term "baseline" refers to the distance between the neutrino source and the detector.
Why neutrinos?Neutrinos, astonishingly abundant yet not well understood, may provide the key to answering some of the most fundamental questions about the nature of our universe. The discovery that neutrinos are not massless, as previously thought, has opened a first crack in the highly successful Standard Model of Particle Physics. Neutrinos may play a key role in solving the mystery of how the universe came to consist only of matter rather than antimatter.
LBNE Events and Milestones
Open LOI Meetings 5 and 12 Dec 2014
at CERN and Fermilab
LBNF Proto-Collaboration Meeting — information to come22-25 Jan 2014 at Fermilab
Gaining support for new long-baseline neutrino experiment at Fermilab
Fermilab Today, Dec 17, 2014
On Dec. 5 and 12, many of the world's neutrino scientists gathered ... to learn about the newly proposed next-generation long-baseline neutrino oscillation experiment...
Two meetings on forming international Long-Baseline Neutrino Facility collaboration
Fermilab Today, Dec 2, 2014
The Fermilab directorate invites all interested scientists, from graduate students to principal investigators, to participate in one of two open meetings on the proposed Long-Baseline Neutrino Facility (LBNF), to be hosted by Fermilab...
Sterile Neutrinos Still Theoretical
Scientific American, Dec 16, 2014
... "(S)terile" neutrinos may resolve some of physics' biggest mysteries...
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U.S. Particle Physics Program Aims for the Future
scientificamerican.com, Nov 15, 2014
...the long term plan for the Fermilab laboratory is to increase the intensity of its neutrino beams by at least 50 percent and shoot these beams off to a detector to be located in South Dakota...
PU set to break new frontiers
indiatimes.org, Oct 14, 2014
Panjab University will develop a research centre that will not just be a hub for neutrino physics researchers but also, at a later stage, develop high-end detectors... "The centre will be set up to collaborate closely with the Fermilab Neutrino Experiments (Long Baseline Neutrino Experiment)," said (PU vice-chancellor) Grover.
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