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Title: Target accuracy assessment for an ADS design.

Abstract

Nuclear data uncertainties and their impact on a very wide range of reactor systems, including their associated fuel cycles, have to be assessed in order to consolidate preliminary design studies for new innovative systems. One specific class of systems is the so-called 'dedicated waste transmuters', that are fast neutron systems (critical or sub-critical, i.e. ADS), loaded with a Minor Actinide (MA) dominated fuel and potentially Uranium-free. The availability of very general tools for sensitivity and uncertainty analysis together with new variance-covariance matrix data, produced in a joint effort under the auspices fo the OECD-NEA by the world leading nuclear data evaluation groups, makes that endeavor particularly significant. In this report major results of interest for dedicated ADS are discussed and the most important fields and data types are pointed out, where priority improvements are required.

Authors:
; ; ; ; ;
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
982983
Report Number(s):
ANL/NE/CP-60289
TRN: US1004338
DOE Contract Number:
DE-AC02-06CH11357
Resource Type:
Conference
Resource Relation:
Conference: NEMEA-4 Workshop; Oct. 16, 2007 - Oct. 18, 2007; Prague, Czech Republic
Country of Publication:
United States
Language:
ENGLISH
Subject:
21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS; ACCURACY; ACTINIDES; AVAILABILITY; DESIGN; EVALUATION; FAST NEUTRONS; FUEL CYCLE; SENSITIVITY; TARGETS; WASTES

Citation Formats

Aliberti, G., Palmiotti, G., Salvatores, M., Nuclear Engineering Division, INL, and CEA Cadarache. Target accuracy assessment for an ADS design.. United States: N. p., 2007. Web.
Aliberti, G., Palmiotti, G., Salvatores, M., Nuclear Engineering Division, INL, & CEA Cadarache. Target accuracy assessment for an ADS design.. United States.
Aliberti, G., Palmiotti, G., Salvatores, M., Nuclear Engineering Division, INL, and CEA Cadarache. Mon . "Target accuracy assessment for an ADS design.". United States. doi:.
@article{osti_982983,
title = {Target accuracy assessment for an ADS design.},
author = {Aliberti, G. and Palmiotti, G. and Salvatores, M. and Nuclear Engineering Division and INL and CEA Cadarache},
abstractNote = {Nuclear data uncertainties and their impact on a very wide range of reactor systems, including their associated fuel cycles, have to be assessed in order to consolidate preliminary design studies for new innovative systems. One specific class of systems is the so-called 'dedicated waste transmuters', that are fast neutron systems (critical or sub-critical, i.e. ADS), loaded with a Minor Actinide (MA) dominated fuel and potentially Uranium-free. The availability of very general tools for sensitivity and uncertainty analysis together with new variance-covariance matrix data, produced in a joint effort under the auspices fo the OECD-NEA by the world leading nuclear data evaluation groups, makes that endeavor particularly significant. In this report major results of interest for dedicated ADS are discussed and the most important fields and data types are pointed out, where priority improvements are required.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Mon Jan 01 00:00:00 EST 2007},
month = {Mon Jan 01 00:00:00 EST 2007}
}

Conference:
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  • Nuclear data uncertainties and their impact on a very wide range of reactor systems, including their associated fuel cycles, have to be assessed in order to consolidate preliminary design studies for new innovative systems. One specific class of systems is the so-called “dedicated waste transmuters”, that are fast neutron systems (critical or sub-critical, i.e. ADS), loaded with a Minor Actinide (MA) dominated fuel and potentially uranium-free. The availability of very general tools for sensitivity and uncertainty analysis together with new variance-covariance matrix data, produced in a joint effort under the auspices of the OECD-NEA by the world leading nuclear datamore » evaluation groups, makes that endeavor particularly significant. In this report major results of interest for dedicated ADS are discussed and the most important fields and data types are pointed out, where priority improvements are required.« less
  • No abstract prepared.
  • Sensitivity coefficients can be used for different objectives like uncertainty estimates, design optimization, determination of target accuracy requirements, adjustment of input parameters, and evaluations of the representativity of an experiment with respect to a reference design configuration. In this paper the theory, based on the adjoint approach, that is implemented in the ERANOS fast reactor code system is presented along with some unique tools and features related to specific types of problems as is the case for nuclide transmutation, reactivity loss during the cycle, decay heat, neutron source associated to fuel fabrication, and experiment representativity.
  • A key experiment in the Accelerated Driven Systems road-map, the Megawatt Pilot Experiment (MEGAPIE) (1 MW) was initiated in 1999 in order to design and build a liquid lead-bismuth spallation target, then to operate it into the Swiss spallation neutron facility SINQ at Paul Scherrer Institute (PSI). This target has been designed, manufactured then setup, fitted with all the ancillary systems, on a Integral test stand in Paul Scherrer Institute for off-beam tests dedicated to thermo-hydraulic and operability tests, carried out during the last months of 2005 then moved to the final implementation in the SINQ facility, with the ancillarymore » systems, for irradiation, carried out from 2006 August 14 to December 21. The results obtained during the integral tests have shown that the target was well designed for a safe operation and allowed to validate the main procedures related to fill and drain, steady-state operation, and transients due to beam trips. The start-up procedure has been developed, and the operating and control parameters have been defined. Very important results were obtained during irradiation particularly showing the very good operational behavior of the target, the heat exchanger and the Electro-magnetic pumps. Moreover a lot of results in the thermal hydraulic and neutronics fields, gas analysis have been gathered and will allow to validate the design studies and the models used for that. The successful behavior of the target and the results to come about irradiated materials will provide to ADS Community a unique relevant design and operational feedback, paving the way to the development of high power spallation targets for future ADS, option for the transmutation of nuclear wastes. (authors)« less
  • We studied areas of major uncertainty in target design using the cost of electricity as our figure of merit. Net electric power from the plant was fixed at 1000 MW to eliminate large effects due to economies of scale. The system is relatively insensitive to target gain. Factors of three changes in gain cause only 8 to 12% changes in electricity cost. An increase in the peak power needed to drive targets poses only a small cost risk, but requires many more beamlets be transported to the target. A shortening of the required ion range causes both cost and beamletmore » difficulties. A factor of 4 decrease in the required range at a fixed driver energy increases electricity cost by 44% and raises the number of beamlets to 240. Finally, the heavy ion fusion system can accommodate large increases in target costs. To address the major uncertainties, target design should concentrate on the understanding requirements for ion range and peak driver power.« less