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- Accelerator-driven systems – Design and construction; Neutrons — Multiplicity; Radioactive wastes — Transmutation; Spallation (Nuclear physics) (1)
- Accelerator-driven systems; Linear accelerators; Radioactive wastes — Transmutation; Spent reactor fuels (1)
- Accelerator-driven systems; Particle accelerators; Radioactive wastes — Transmutation; Spent reactor fuels (1)
Articles 1 - 3 of 3
Full-Text Articles in Physics
Neutron Multiplicity Measurements For The Afci Program Quarterly Progress Report April-June 2005, Denis Beller
Neutron Multiplicity Measurements For The Afci Program Quarterly Progress Report April-June 2005, Denis Beller
Transmutation Sciences Physics (TRP)
This project was developed to test a Russian-built Neutron Multiplicity Detector System (NMDS) for measuring neutrons generated in a central target by a variety of accelerators. To assist in experiment design and evaluation, we use the most advanced high energy radiation transport code, MCNPX, to model experiments. Experimental results are compared to computational predictions and discrepancies are investigated. Initial plans were to conduct experiments using a 70-MeV proton cyclotron at the Crocker Nuclear Laboratory at the University of California at Davis and/or a 20 to 40 MeV electron linac (linear accelerator) at the Idaho Accelerator Center (IAC) at Idaho State …
Neutron Multiplicity Measurements For The Afci Program Quarterly Progress Report January-March 2005, Denis Beller
Neutron Multiplicity Measurements For The Afci Program Quarterly Progress Report January-March 2005, Denis Beller
Transmutation Sciences Physics (TRP)
The U.S. Advanced Fuel Cycle Initiative (AFCI) is a program to develop economic and environmental methods to reduce the impact of waste from commercial nuclear fuel cycles. One concept for near-complete destruction of waste isotopes from used nuclear fuel is accelerator driven transmutation. High-power accelerators would be used to produce high-energy charged particles, which then collide with heavy metal targets to create a cascade of neutrons. These neutrons then cause a nuclear chain reaction in subcritical systems. Fission neutrons then transmute fissile waste isotopes as well as other problematic isotopes such as technetium-99 and iodine-129. To design these systems, complex …
Neutron Multiplicity Measurements Of Target/Blanket Materials, Denis Beller
Neutron Multiplicity Measurements Of Target/Blanket Materials, Denis Beller
Transmutation Sciences Physics (TRP)
To optimize the performance of accelerator-driven sub-critical (ADS) transmutation systems, engineers will need to design the system to operate with a neutron multiplication factor just less than that of a critical, or self-sustaining, system. This design criterion requires particle transport codes that instill the highest level of confidence with minimal uncertainty, because larger uncertainties in the codes require larger safety margins in the design and result in a lower efficiency of the ADS transmuter. For current design efforts in the U.S., a Monte Carlo particle transport code MCNPX is used to model neutron production and transport for spallation neutron systems. …