Neutronics experiments on HCPB and HCLL TBM mock-ups in preparation of nuclear measurements in ITER

Numerical benchmarks TRIPOLI−MCNP with use of MCAM on FNG ITER bulk shield and FNG HCLL TBM mock-up experiments

“…MCNP [3] is a 3D MC code currently used by the EFDA partners of CEA for fusion blankets analysis [4,5] and is sometimes considered as the reference 3D MC tool for ITER design [6][7][8]. However, in order to improve the confidence on neutronic numerical design another validated 3D MC code with physical and numerical models selected and programmed independently from MCNP is highly recommended.…”

Measurement and analysis of neutron flux spectra in a neutronics mock-up of the HCLL test blanket module

“…It is therefore sensitive to the absorption cross-section in the assembly which is mostly due to the 6 Li concentration in the LiPb. A lithium concentration of 0.28 wt.% had been used in the present calculations which was deduced from the results of the measurements in the mock-up at FNG [2]. Fig.…”

“…2. The mock-up is the same as used before for the measurement of the tritium production rate at FNG of ENEA/Frascati [2], however, in this case the central channel which accommodated the tritium detectors (see Ref. [2]) was replaced by solid bricks of LiPb.…”

“…Firstly, a series of irradiations had been conducted with the aim to measure the tritium production by various techniques and detectors, and dosimetry foil activation rates at the Frascati neutron generator [2]. In the second campaign, these experiments were complemented by measurements of neutron and gamma-ray flux spectra at the 14 MeV neutron generator of the Technical University of Dresden (TUD).…”

Development of On-Line Tritium Monitor Based Upon Artificial Diamond for Fusion Applications

“…A photo of the mock-up is shown in Fig. 4 while an accurate description of mock-up characteristics will be reported elsewhere [5].…”