Status of the McDeLicious Approach for the D-Li Neutron Source Term Modeling in IFMIF Neutronics Calculations

Simakov, S.P.; Fischer, U.; Kondo, Keitaro; Pereslavtsev, P.

doi:10.13182/fst11-444

Cited by 64 publications

(14 citation statements)

References 7 publications

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“…The double differential neutron spectrum inside the test cell used as input for Geant4 simulations was calculated by means of the MCNP-6 code using the DONES model "mdl9.2.1", which includes the updated HFTM and test cell configuration. In that simulation, the package McDeLicious-17 [14] was capitalised on to simulate the D-Li reactions. The neutron FENDL-3.1d library [15] was employed.…”

Section: Methodology and Software Toolsmentioning

confidence: 99%

Neutron availability in the Complementary Experiments Hall of the IFMIF-DONES facility

Hirtz¹,

Letourneau²,

Thulliez³

et al. 2022

Preprint

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The IFMIF-DONES facility will be dedicated to the irradiation of structural materials planned for the use in future fusion reactors such as DEMO (Demonstration Fusion Power Plant). The potentialities of the IFMIF-DONES facility to complement its principal purpose by other experiments that would open the facility to other communities is addressed in this work. It concerns a study based on simulations to evaluate the neutronic performances of IFMIF-DONES in an hall dedicated to complementary experiments where neutrons can be transported. With the simple beam tube geometry of 4.5 cm entrance diameter studied in this work we have shown that a collimated fast-neutron beam of about 2 10 10 n/cm 2 /s is available in the hall. Adding a moderator in the hall with neutron extraction lines would allow to get thermal neutron beams of about 10 6 -10 7 n/cm 2 /s for dedicated experiments. The results show that IFMIF-DONES has the potentialities to be a medium-flux neutron facility for most of the neutron applications.

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Section: Methodology and Software Toolsmentioning

confidence: 99%

Neutron availability in the Complementary Experiments Hall of the IFMIF-DONES facility

Hirtz¹,

Letourneau²,

Thulliez³

et al. 2022

Preprint

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“…The unsteady process is modelled on the basis of compressible Euler equations with an additional source term q(t, x, y, z) in the energy equation, responsible for the beam action. For this purpose the heating power distribution for IFMIF-EVEDA operation conditions [5] (two deuteron beams) is applied with the scale factor of 0.5.…”

Section: A Numerical Methods and Model Descriptionmentioning

confidence: 99%

Analytical and Numerical Assessment of Thermally Induced Pressure Waves in the IFMIF-DONES Liquid-Lithium Target

Gordeev

Arena

Bernardi

et al. 2020

IEEE Trans. Plasma Sci.

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The intended steady-state operation conditions of the IFMIF-DONES target system are based on the D+ beam stationary running at full nominal power (5 MW). Nevertheless, critical situations can occur in case of unavoidable sudden events like beam trips. The instantaneous variation in the heating power deposited in the lithium when the beam is rapidly switched between-on and -off states leads to the thermal expansion, which is compensated by the compression of the target material, resulting in locally high pressures and a pressure wave propagating through the target towards the back wall. Besides tensile stress of the back wall structure caused by shock pressure waves, undesirable cavitation may occur, when pressure waves are reflected leading to negative pressures.For this purpose, analytical and numerical thermo-hydraulic analyses of the effects generated in the lithium during the beamon/beam-off switches are performed. The pressure wave development inside the Li-target has been analysed numerically with the CFD code Star-CCM+. The simulation of the thermal induced pressure in the Li-target shows that for normal operation conditions peak pressures of about 0,3 MPa can be reached. In both "beam-on" and "beam-off" cases a zone with a negative static pressure flow is forming in the Li-target. The results obtained from analytical and numerical analyses of the thermally induced pressure waves are discussed concerning potential cavitation and stability of the lithium free-surface flow. Simulation results served as input for the analysis of fatigue effects occurring in the target structure during sudden beamon/beam-off events.

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“…In particular, it is used to produce the neutron and gamma sources which results from deuteron interactions with accelerator materials in DONES. The McDeLicious Monte Carlo code [6,7] has been developed by KIT, Karlsruhe, specifically for application to IFMIF (and later DONES). McDeLicious is an extension to the LANL Monte Carlo code MCNP [8,9] with the capability to simulate the generation of (d, Li) source neutrons (and photons) based on the use of evaluated d + 6,7 Li cross-sections [10,11].…”

Section: Radiological Materials At Risk and Radiation Sourcesmentioning

confidence: 99%

“…McDeLicious is an extension to the LANL Monte Carlo code MCNP [8,9] with the capability to simulate the generation of (d, Li) source neutrons (and photons) based on the use of evaluated d + 6,7 Li cross-sections [10,11]. McDeLicious has been thoroughly benchmarked and validated against thin and thick Li target neutron yield measurements [7,11] for the Li (d, xn) cross-section at 40 MeV incident deuteron energy and thick Li target neutron yield data as a function of the deuteron energy.…”

Section: Radiological Materials At Risk and Radiation Sourcesmentioning

confidence: 99%

Integration of Safety in IFMIF-DONES Design

Martín-Fuertes

García

Fernández

et al. 2019

Safety

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The IFMIF-DONES (International Fusion Material Irradiation Facility-DEMO Oriented NEutron Source) facility is being designed with the general objective of providing irradiation of representative samples of power fusion machine materials under prototypical conditions. A linear accelerator will deliver deuterons at high intensity to circulating lithium in a loop, which will produce neutrons capable of obtaining the required damage conditions. As a result of this process, radionuclides will be produced as a by-product, which is characterized by several degrees of mobility. Shielding and radiation protection measures will be required in the facility. IFMIF-DONES will be classified as a first class radioactive facility according to national regulations, with Spain being the European candidate to site the facility. Several aspects of the main safety instructions affecting the facility's design are explained and discussed in this paper.

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Status of the McDeLicious Approach for the D-Li Neutron Source Term Modeling in IFMIF Neutronics Calculations

Cited by 64 publications

References 7 publications

Neutron availability in the Complementary Experiments Hall of the IFMIF-DONES facility

Neutron availability in the Complementary Experiments Hall of the IFMIF-DONES facility

Analytical and Numerical Assessment of Thermally Induced Pressure Waves in the IFMIF-DONES Liquid-Lithium Target

Integration of Safety in IFMIF-DONES Design

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