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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]
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]
The title of her talk at noon to Friends of ORNL at the UT Resource Center, 1201 Oak Ridge Turnpike, is “Actinide Separations Tailored for Californium-252, Plutonium-238 and Promethium-147 ...
They need far less fuel, and far less fission products build up as the fuel is used. On the other hand, their fuel requires more highly enriched uranium , typically up to 20% U-235 , [ 1 ] although some use 93% U-235; while 20% enrichment is not generally considered usable in nuclear weapons, 93% is commonly referred to as " weapons-grade ".
HFIR – High Flux Isotope Reactor, Oak Ridge National Laboratory; SNS – Spallation Neutron Source, Oak Ridge National Laboratory; MURR – University of Missouri Research Reactor, Columbia, MO. MNRC – MacClellan Nuclear Research Center, Sacramento, CA. RPI LINAC - Rensselaer Gaerttner LINAC Center, Troy, NY.
Fusion forces together atoms of very light, stable elements like isotopes of hydrogen, creating slightly heavier elements like helium and producing as much as four times as much energy, per unit ...
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