The Fermilab Short-Baseline Neutrino Program emerged from a joint proposal by three collaborations to use their detectors to perform sensitive searches for νe appearance and νμ disappearance in the Booster Neutrino Beam. All of the detectors utilize liquid argon time projection chambers, and each contributes to the development of this technology for the long-baseline DUNE experiment. The joint scientific goals are outlined in the proposal, available on the HEP arxiv. The Short-Baseline Neutrino Program was granted Stage 1 approval in early 2015. The web sites of the three Short-Baseline Neutrino Program collaborations are linked below. The Short-Baseline Neutrino Program Office, linked at left, manages the Department of Energy contributions to the Short-Baseline Neutrino Program and coordinates the construction and installation activities for the Near and Far detectors.
The ICARUS T600 detector, which comprises two cryostats holding liquid argon time projection chamber modules and photodetectors, will serve as the Short-Baseline Program Far Detector. It is the farthest from the BNB target, at a distance of 600 meters, and it is the largest of the detectors with 500 tons of liquid argon in the active volumes. The T600 is currently being refurbished at CERN following successful operation at the Gran Sasso laboratory from 2010-2014. The detector will be moved to Fermilab in 2017.
MicroBooNE is located 470 meters from the Booster Neutrino Beam target, and consists of a 8250-wire TPC and 32 photomultiplier tubes which instrument 80 tons of liquid argon in the active volume. The cryostat was filled in 2015 and the detector is currently operating; this data will produce neutrino cross section measurements and explore the unexplained excess of low-energy electromagnetic events observed by MiniBooNE. After the Short-Baseline Neutrino Near and Far detectors are operating, MicroBooNE will contribute to the Short-Baseline Neutrino scientific program.
Short-Baseline Near Detector, or SBND, is located just 110 meters from the Booster Neutrino Beam target, and has 112 tons of liquid argon within the active volume of its time projection chamber and light detection systems. The SBND cryostat is a membrane type, the same as planned for the future DUNE far detectors. While the SBND design and readout electronics are not identical to those being developed for DUNE, they share many features and closely resemble one another.
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