test_moissonnage_selune
type: Agent

Study of nuclear energy systems and double strata scenarios for minor actinides transmutation in ADS
type: Distribution
access URL: https://theses.hal.science/tel-00789327
format: HTML
issued: 2026-05-14T10:42:59.559544
modified: 2026-05-14T10:42:59.517669

Study of nuclear energy systems and double strata scenarios for minor actinides transmutation in ADS
type: Dataset
contact point: Organization
  fn: CCSD
keyword: double-strata
keyword: transmutation
keyword: acdc
keyword: physnuclphysics-physicsnuclear-theory-nucl-th
keyword: mure
keyword: actinide-mineur
keyword: must
keyword: scenario
keyword: minor-actinide
keyword: theses
keyword: infoeu-reposemanticsdoctoralthesis
keyword: double-strate
keyword: class
keyword: ads
landing page: https://theses.hal.science/tel-00789327
description: The French law of 28th June 2006 regarding advanced nuclear waste management requires a scientific assessment to define future industrial strategies. The present PhD thesis was carried in this framework and concerns specifically the research axis of minoractinides transmutation. A high power Accelerator Driven System (ADS) concept is developed at SUBATECH for this purpose. A 1 GeV proton beam feeds three liquid lead-bismuth spallation targets. The MUltiple Spallation Target (MUST) ADS reaches the thermal powers up to 1 GW with a high specific power. A nuclear reactor dimensioning method has been developed and applied to different double strata scenarios. In these scenarios, SFR (Sodium FastReactors) or PWR (Pressurized Water Reactors) power reactors produce minor actinides that will be transmuted into ADS. In each core (SFR and ADS), the plutonium multi-reprocessing strategy is performed while ADS subcritical core also multi-reprocesses minor actinides. To limit the core reactivity and improve the fuel thermal conductivity, the minor actinides fuel is mixed with MgO inert matrix. Nuclear branches with lead and sodium coolants for the ADS, have been studied for different irradiation times and two transmutation strategies have been assessed : whether whole minor actinides, whether americium only is tranmuted. The thesis presents precisely the MUST ADS design methodology and the calculations to get a fuel composition at equilibrium. Then a one cycle evolution is performed and analysed for the fuel and the multiplication factor. Radiotoxicity and thermal power of the waste produced are then compared. Finally, the study of double strata scenarios is performed to analyse the plutonium and minor actinides inventories in cycle and also the waste produced according to the transmutation strategies applied and the first stratum evolution.
identifier: NNT: 2012EMNA0050
issued: 2026-05-14T10:42:59.551519
language: fr
modified: 2026-05-14T10:42:59.551525