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Lithium Blanket Module (LBM) Dosimetry Measurements at the Lotus 14-MeV Neutron Source Facility

F. Y. Tsang, W. Leo, C. Sahraoui, S. Wuthrich, M. Shaerb

Fusion Science and Technology / Volume 10 / Number 3P2A / November 1986 / Pages 962-971

Lithium Blanket Module Program at the LOTUS Neutron Source Facility / Proceedings of the Seveth Topical Meeting on the Technology of Fusion Energy (Reno, Nevada, June 15–19, 1986) / dx.doi.org/10.13182/FST86-A24859

A series of passive dosimetry irradiation experiments were performed inside the Lithium Blanket Module (LBM) with the 14-MeV neutron source at the Ecole Polytechnique Federale de Lausanne (EPFL). Sets of passive dosimetry foils were utilized to measure fusion-reactor-blanket neutronic environments. The dosimeter reaction data were analyzed and compared with calculational models. These experimental results demonstrate the ability to simulate low power deuterium-tritium (D-T) plasma shots by measuring the neutron field in a reactor-representative fusion blanket environment. The dosimeter results can determine the entire neutron spectrum along the full length of the LBM test rod. The set of selected dosimetry materials meets the requirements of neutronic characterization in future LBM-TFTR D-T and high power deuterium-deuterium (D-D) plasma experiments.