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The High Flux Isotope Reactor (HFIR) is a nuclear research reactor at Oak Ridge National Laboratory (ORNL) in Oak Ridge, Tennessee, United States.Operating at 85 MW, HFIR is one of the highest flux reactor-based sources of neutrons for condensed matter physics research in the United States, and it has one of the highest steady-state neutron fluxes of any research reactor in the world.
The protons pass into a ring-shaped structure, a proton accumulator ring, where they spin around at very high speeds and accumulate in "bunches." Each bunch of protons is released from the ring as a pulse, at a rate of 60 times per second (60 hertz). The high-energy proton pulses strike a target of liquid mercury, where spallation occurs.
It operated from 1966 until 1969 (with six months down time to move from U-235 to U-233 fuel) and proved the viability of molten salt reactors, while also producing fuel for other reactors as a byproduct of its own reaction. [22] The High Flux Isotope Reactor built in 1965 had the highest neutron flux of any reactor at the time. [22]
Neutron science, using the Spallation Neutron Source, and the recently upgraded High Flux Isotope Reactor. Synthesis science, also called “science-driven synthesis,” facilitated by extensive and novel synthesis capabilities in the CNMS' first five scientific themes (described below) and by a new nanofabrication research laboratory.
The High Flux Isotope Reactor (HFIR) @ ORNL [41] 100/202 The Spallation Neutron Source (SNS) @ ORNL [42] 450/483 Fusion Energy Sciences (FES) [43] Fusion Facilities The DIII-D (tokamak) National Fusion Facility @ General Atomics [44] NA/429 National Spherical Torus Experiment (NSTX) @ PPPL [45] 300/358 High Energy Physics (HEP) [46]
A High Flux Reactor is a type of nuclear research reactor. High Flux Isotope Reactor (HFIR), in Oak Ridge, Tennessee, United States of America, High Flux Australian Reactor (HIFAR), Australia's first nuclear reactor, High-Flux Advanced Neutron Application Reactor (HANARO), in South Korea. The High Flux Reactor at Institut Laue–Langevin in France.
The pumps needed to operate at high rates and handle a gas 12 times as dense as air. To meet these requirements, the SAM Laboratories chose to use centrifugal pumps . The desired compression ratio of 2.3:1 to 3.2:1 was unusually high for this type of pump.
The Molten-Salt Reactor Experiment (MSRE) was an experimental molten-salt reactor research reactor at the Oak Ridge National Laboratory (ORNL) in Oak Ridge, Tennessee. This technology was researched through the 1960s, the reactor was constructed by 1964, it went critical in 1965, and was operated until 1969. [ 1 ]