A study of the potential influence of frame coolant distribution on the radiation-induced damage of HCLL-TBM structural material

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Abstract

Within the European Fusion Technology Programme, the Helium-Cooled Lithium Lead (HCLL) breeding blanket concept is one of the two EU lines to be developed for a Long Term fusion reactor, in particular with the aim of manufacturing a Test Blanket Module (TBM) to be implemented in ITER. The HCLL-TBMis foreseen to be located in an ITER equatorial port, being housed inside a steel-supporting frame, actively cooled by pressurized water. That supporting frame has been designed to house two different TBMs, providing two cavities separated by a dividing Plate 20 cm thick. As the nuclear response of HCLL-TBM might vary accordingly to the supporting frame configuration and composition, at the Department of Nuclear Engineering of the University of Palermo, a parametric study has been launched to investigate such an influence. Previous works dealt with the dependence of the nuclear response of HCLL-TBM on the configuration of a homogeneous frame, the present one has been focused on the investigation of the potential influence of coolant distribution within the frame on the radiation-induced damage of the HCLL-TBM structural material. To this purpose, a detailed parametric study of the HCLL-TBM nuclear response has been performed by means of 3D-Monte Carlo neutronic analyses to asses both the rates of displacements per atom and helium and hydrogen production within the structural material. A semi-heterogeneous model of the supporting frame, assuming a realistic coolant distribution, and a 3D heterogeneous model of the HCLL-TBM, taking into account EUROFER as structural material, has been set-up. Therefore, the models of the TBM and of its frame have been inserted into the existing 3D ITER one, simulating realistically the reactor lay-out up to the cryostat and providing for a proper D-T neutron source. The analyses have been performed by means of theMCNP-4C code, and the results obtained are reported and critically discussed.
Lingua originaleEnglish
pagine (da-a)1273-1276
Numero di pagine4
RivistaFusion Engineering and Design
Volume83
Stato di pubblicazionePublished - 2008

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Helium
Lithium
Coolants
Lead
Radiation
Breeding blankets
Nuclear engineering
Cryostats
Neutron sources
Steel
Fusion reactors
Hydrogen production
Fusion reactions
Atoms
Water
Chemical analysis

All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering
  • Mechanical Engineering
  • Materials Science(all)
  • Nuclear Energy and Engineering

Cita questo

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title = "A study of the potential influence of frame coolant distribution on the radiation-induced damage of HCLL-TBM structural material",
abstract = "Within the European Fusion Technology Programme, the Helium-Cooled Lithium Lead (HCLL) breeding blanket concept is one of the two EU lines to be developed for a Long Term fusion reactor, in particular with the aim of manufacturing a Test Blanket Module (TBM) to be implemented in ITER. The HCLL-TBMis foreseen to be located in an ITER equatorial port, being housed inside a steel-supporting frame, actively cooled by pressurized water. That supporting frame has been designed to house two different TBMs, providing two cavities separated by a dividing Plate 20 cm thick. As the nuclear response of HCLL-TBM might vary accordingly to the supporting frame configuration and composition, at the Department of Nuclear Engineering of the University of Palermo, a parametric study has been launched to investigate such an influence. Previous works dealt with the dependence of the nuclear response of HCLL-TBM on the configuration of a homogeneous frame, the present one has been focused on the investigation of the potential influence of coolant distribution within the frame on the radiation-induced damage of the HCLL-TBM structural material. To this purpose, a detailed parametric study of the HCLL-TBM nuclear response has been performed by means of 3D-Monte Carlo neutronic analyses to asses both the rates of displacements per atom and helium and hydrogen production within the structural material. A semi-heterogeneous model of the supporting frame, assuming a realistic coolant distribution, and a 3D heterogeneous model of the HCLL-TBM, taking into account EUROFER as structural material, has been set-up. Therefore, the models of the TBM and of its frame have been inserted into the existing 3D ITER one, simulating realistically the reactor lay-out up to the cryostat and providing for a proper D-T neutron source. The analyses have been performed by means of theMCNP-4C code, and the results obtained are reported and critically discussed.",
author = "Elio Oliveri and Giuseppe Vella and {Di Maio}, {Pietro Alessandro} and Pierluigi Chiovaro",
year = "2008",
language = "English",
volume = "83",
pages = "1273--1276",
journal = "Fusion Engineering and Design",
issn = "0920-3796",
publisher = "Elsevier BV",

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TY - JOUR

T1 - A study of the potential influence of frame coolant distribution on the radiation-induced damage of HCLL-TBM structural material

AU - Oliveri, Elio

AU - Vella, Giuseppe

AU - Di Maio, Pietro Alessandro

AU - Chiovaro, Pierluigi

PY - 2008

Y1 - 2008

N2 - Within the European Fusion Technology Programme, the Helium-Cooled Lithium Lead (HCLL) breeding blanket concept is one of the two EU lines to be developed for a Long Term fusion reactor, in particular with the aim of manufacturing a Test Blanket Module (TBM) to be implemented in ITER. The HCLL-TBMis foreseen to be located in an ITER equatorial port, being housed inside a steel-supporting frame, actively cooled by pressurized water. That supporting frame has been designed to house two different TBMs, providing two cavities separated by a dividing Plate 20 cm thick. As the nuclear response of HCLL-TBM might vary accordingly to the supporting frame configuration and composition, at the Department of Nuclear Engineering of the University of Palermo, a parametric study has been launched to investigate such an influence. Previous works dealt with the dependence of the nuclear response of HCLL-TBM on the configuration of a homogeneous frame, the present one has been focused on the investigation of the potential influence of coolant distribution within the frame on the radiation-induced damage of the HCLL-TBM structural material. To this purpose, a detailed parametric study of the HCLL-TBM nuclear response has been performed by means of 3D-Monte Carlo neutronic analyses to asses both the rates of displacements per atom and helium and hydrogen production within the structural material. A semi-heterogeneous model of the supporting frame, assuming a realistic coolant distribution, and a 3D heterogeneous model of the HCLL-TBM, taking into account EUROFER as structural material, has been set-up. Therefore, the models of the TBM and of its frame have been inserted into the existing 3D ITER one, simulating realistically the reactor lay-out up to the cryostat and providing for a proper D-T neutron source. The analyses have been performed by means of theMCNP-4C code, and the results obtained are reported and critically discussed.

AB - Within the European Fusion Technology Programme, the Helium-Cooled Lithium Lead (HCLL) breeding blanket concept is one of the two EU lines to be developed for a Long Term fusion reactor, in particular with the aim of manufacturing a Test Blanket Module (TBM) to be implemented in ITER. The HCLL-TBMis foreseen to be located in an ITER equatorial port, being housed inside a steel-supporting frame, actively cooled by pressurized water. That supporting frame has been designed to house two different TBMs, providing two cavities separated by a dividing Plate 20 cm thick. As the nuclear response of HCLL-TBM might vary accordingly to the supporting frame configuration and composition, at the Department of Nuclear Engineering of the University of Palermo, a parametric study has been launched to investigate such an influence. Previous works dealt with the dependence of the nuclear response of HCLL-TBM on the configuration of a homogeneous frame, the present one has been focused on the investigation of the potential influence of coolant distribution within the frame on the radiation-induced damage of the HCLL-TBM structural material. To this purpose, a detailed parametric study of the HCLL-TBM nuclear response has been performed by means of 3D-Monte Carlo neutronic analyses to asses both the rates of displacements per atom and helium and hydrogen production within the structural material. A semi-heterogeneous model of the supporting frame, assuming a realistic coolant distribution, and a 3D heterogeneous model of the HCLL-TBM, taking into account EUROFER as structural material, has been set-up. Therefore, the models of the TBM and of its frame have been inserted into the existing 3D ITER one, simulating realistically the reactor lay-out up to the cryostat and providing for a proper D-T neutron source. The analyses have been performed by means of theMCNP-4C code, and the results obtained are reported and critically discussed.

UR - http://hdl.handle.net/10447/48560

M3 - Article

VL - 83

SP - 1273

EP - 1276

JO - Fusion Engineering and Design

JF - Fusion Engineering and Design

SN - 0920-3796

ER -