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High Flux Neutron Source Facility


High Flux Neutron Source Facility
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High Flux Neutron Source Facility


High Flux Neutron Source Facility
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Author :
language : en
Publisher:
Release Date : 1978

High Flux Neutron Source Facility written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1978 with categories.




Draft Environmental Impact Statement


Draft Environmental Impact Statement
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Author :
language : en
Publisher:
Release Date : 1977

Draft Environmental Impact Statement written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1977 with Environmental impact analysis categories.




A U S High Flux Neutron Facility For Fusion Materials Development


A U S High Flux Neutron Facility For Fusion Materials Development
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Author :
language : en
Publisher:
Release Date : 2010

A U S High Flux Neutron Facility For Fusion Materials Development written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010 with categories.


Materials for a fusion reactor first wall and blanket structure must be able to reliably function in an extreme environment that includes 10-15 MW-year/m2 neutron and heat fluences. The various materials and structural challenges are as difficult and important as achieving a burning plasma. Overcoming radiation damage degradation is the rate-controlling step in fusion materials development. Recent advances with oxide dispersion strengthened ferritic steels show promise in meeting reactor requirements, while multi-timescale atomistic simulations of defect-grain boundary interactions in model copper systems reveal surprising self-annealing phenomenon. While these results are promising, simultaneous evaluation of radiation effects displacement damage (≤ 200 dpa) and in-situ He generation (≤ 2000 appm) at prototypical reactor temperatures and chemical environments is still required. There is currently no experimental facility in the U.S. that can meet these requirements for macroscopic samples. The E.U. and U.S. fusion communities have recently concluded that a fusion-relevant, high-flux neutron source for accelerated characterization of the effects of radiation damage to materials is a top priority for the next decade. Data from this source will be needed to validate designs for the multi-$B next-generation fusion facilities such as the CTF, ETF, and DEMO, that are envisioned to follow ITER and NIF.



Optimization Of The Testing Volumes With Respect To Neutron Flux Levels In The Two Target High Flux D Li Neutron Source For The International Fusion Materials Irradiation Facility


Optimization Of The Testing Volumes With Respect To Neutron Flux Levels In The Two Target High Flux D Li Neutron Source For The International Fusion Materials Irradiation Facility
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Author :
language : en
Publisher:
Release Date : 1989

Optimization Of The Testing Volumes With Respect To Neutron Flux Levels In The Two Target High Flux D Li Neutron Source For The International Fusion Materials Irradiation Facility written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1989 with categories.


An economic and fusion-relevant source of high-energy neutrons is an essential element in the fusion nuclear technology and development program. This source can be generated by directing a high energy deuteron beam onto a flowing liquid lithium target, producing neutrons via the D-Lithium stripping reaction. Previous work on this type of source concentrated on a design employing one deuteron beam of modest amperage. This design was shown to have a relatively small testing volume with high flux gradients and was therefor considered somewhat unattractive from a materials testing standpoint. A design using two lithium targets and two high-amperage beams has recently been proposed. This two beam design has been examined in an effort to maximize the test volume while minimizing the flux gradients and minimizing the effect of radiation damage on one target due to the other. A spatial, energy and angle dependent neutron source modeling the D-Lithium source was developed. Using this source, a 3-dimensional map of uncollided flux within the test volume was calculated. The results showed that the target separation has little effect on the available experimental volume and that a testing volume of (approximately)35 liters is available with a volume averaged flux above 1014 n/cm2/s. The collided flux within the test volume was then determined by coupling the source model with a Monte Carlo code. The spectral effects of the high-energy tail in the flux were examined and evaluated as to possible effects on materials response. Calculations comparing the radiation damage to materials from the D-Lithium source to that cause by a standard DT fusion first-wall neutron flux spectrum showed that the number of appm and dpa, as well as the ratio appm/dpa and dpa/MW/m2 are within 30% for the two sources. 8 refs., 8 figs.



Fusion Materials Irradiation Testing Facility Hanford Reservation Richland Washington


Fusion Materials Irradiation Testing Facility Hanford Reservation Richland Washington
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Author : United States. Department of Energy
language : en
Publisher:
Release Date : 1978

Fusion Materials Irradiation Testing Facility Hanford Reservation Richland Washington written by United States. Department of Energy and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1978 with Controlled fusion categories.




High Flux Isotope Reactor Cold Neutron Source Reference Design Concept


High Flux Isotope Reactor Cold Neutron Source Reference Design Concept
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Author :
language : en
Publisher:
Release Date : 1998

High Flux Isotope Reactor Cold Neutron Source Reference Design Concept written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1998 with categories.


In February 1995, Oak Ridge National Laboratory's (ORNL's) deputy director formed a group to examine the need for upgrades to the High Flux Isotope Reactor (HFIR) system in light of the cancellation of the Advanced neutron Source Project. One of the major findings of this study was that there was an immediate need for the installation of a cold neutron source facility in the HFIR complex. In May 1995, a team was formed to examine the feasibility of retrofitting a liquid hydrogen (LH2) cold source facility into an existing HFIR beam tube. The results of this feasibility study indicated that the most practical location for such a cold source was the HB-4 beam tube. This location provides a potential flux environment higher than the Institut Laue-Langevin (ILL) vertical cold source and maximizes the space available for a future cold neutron guide hall expansion. It was determined that this cold neutron beam would be comparable, in cold neutron brightness, to the best facilities in the world, and a decision was made to complete a preconceptual design study with the intention of proceeding with an activity to install a working LH2 cold source in the HFIR HB-4 beam tube. During the development of the reference design the liquid hydrogen concept was changed to a supercritical hydrogen system for a number of reasons. This report documents the reference supercritical hydrogen design and its performance. The cold source project has been divided into four phases: (1) preconceptual, (2) conceptual design and testing, (3) detailed design and procurement, and (4) installation and operation. This report marks the conclusion of the conceptual design phase and establishes the baseline reference concept.



Intense Neutron Sources


Intense Neutron Sources
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Author : U.S. Atomic Energy Commission
language : en
Publisher:
Release Date : 1966

Intense Neutron Sources written by U.S. Atomic Energy Commission and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1966 with Neutron sources categories.




Non Reactor Neutron Irradiation Facility


Non Reactor Neutron Irradiation Facility
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Author :
language : en
Publisher:
Release Date : 1983

Non Reactor Neutron Irradiation Facility written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1983 with categories.


A new generation of neutron sources is just coming into existence with great promise for the future. These sources are based on neutron production by spallation from the interaction of high energy protons with a heavy metal target. Currently the highest flux facility of this type is the Intense Pulsed Neutron Source at Argonne National Laboratory. This machine is also unique in its dedication to both slow-neutron scattering and fast-neutron damage studies.



Scientific Opportunities With Advanced Facilities For Neutron Scattering


Scientific Opportunities With Advanced Facilities For Neutron Scattering
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Author : Argonne National Laboratory
language : en
Publisher:
Release Date :

Scientific Opportunities With Advanced Facilities For Neutron Scattering written by Argonne National Laboratory and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on with categories.




An Overview Of The Planned Advanced Neutron Source Facility


An Overview Of The Planned Advanced Neutron Source Facility
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Author :
language : en
Publisher:
Release Date : 1990

An Overview Of The Planned Advanced Neutron Source Facility written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1990 with categories.


The Advanced Neutron Source (ANS), now in the conceptual design stage, will be a new user facility for neutron research, including neutron beam experiments, materials irradiation testing and materials analysis capabilities, and production facilities for transuranic and lighter isotopes. The neutron source is to be the world's highest flux beam reactor and is based on existing reactor technology to minimize safety issues. The preferred fuel, U3Si2, has been tested in operating reactors in the United States, Japan, and Europe. The core is cooled, moderated, and reflected by heavy water, common practice for research reactors. 3 refs., 9 figs., 3 tabs.