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Bryan, C.

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The Intermediate Neutrino Program

The US neutrino community gathered at the Workshop on the Intermediate Neutrino Program (WINP) at Brookhaven National Laboratory February 4-6, 2015 to explore opportunities in neutrino physics over the next five to ten years. Scientists from particle, astroparticle and nuclear physics participated in the workshop. The workshop examined promising opportunities for neutrino physics in the intermediate term, including possible new small to mid-scale experiments, US contributions to large experiments, upgrades to existing experiments, R&D plans and theory. The workshop was organized into two sets of parallel working group sessions, divided by physics topics and technology. Physics working groups covered topics on Sterile Neutrinos, Neutrino Mixing, Neutrino Interactions, Neutrino Properties and Astrophysical Neutrinos. Technology sessions were organized into Theory, Short-Baseline Accelerator Neutrinos, Reactor Neutrinos, Detector R&D and Source, Cyclotron and Meson Decay at Rest sessions.This report summarizes discussion and conclusions from the workshop.

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS↗

An advanced materials irradiation facility for materials and fuels irradiations at the high flux isotope reactor

The High Flux Isotope Reactor (HFIR) at Oak Ridge National Laboratory (ORNL) is a pressurized, light-water-cooled and -moderated, beryllium-reflected, 85 MW research reactor fueled by Highly enriched {sup 235}U. The Materials Irradiation Facility (MIF) at HFIR) is one of the two experimental platforms in the US that can host fully instrumented and monitored experiments in a high-neutron-flux environment. The unique advantage of instrumented capsules is that the researcher can monitor and acquire in situ data and change capsule operating conditions in real time during the irradiation. Recently ORNL funded a Laboratory-Directed Research and Development (LDRD) project to strategically enhance the capabilities of MIF and provide researchers with a more flexible experimental platform. MIF comprises 4 systems: a gas supply system, a supervisory control system, an effluent system, and a standard gas routing system. The first 3 systems have common functionality for all types of experiments. The gas routing system provides the correct gases and gas mixtures for individual experiments and is unique to each experiment. MIF improvements include an updated and more sophisticated experiment monitoring system, a modular design allowing easier addition of simultaneous experiments, and features that allow rapid incorporation of additional instrumentation. The new design is both modular and re-configurable. It calls for a standard gas routing system module that can be configured with software to allow for easy expansion to multiple experiments. The ability to monitor the effluent activity during fissile material irradiation is a much needed enhancement for detecting fuel failures or determining fission product release. A gamma-ray spectrometry will be installed in a bypass gas line off the effluent main stream. The gas will flow through the detector for continuous detection of the particles of interest.

21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS↗

Autoignition test cell with flexible atmosphere control

Spontaneous combustion temperatures are usually found by simply beating material until it bursts into flames. Test cell allows control of test atmosphere and composition. Reusable device permits periodic sampling of decomposition products in test atmosphere. With modifications, cell could be used to determine melting points and reactivites of wide variety of substances.

Evans, D.↗