Open AccessPreanalysis of Neutron Activation Measurements in Shielding Penetrations at JET
Author(s) -
I. E. Stamatelatos,
T. Vasilopoulou,
P. Batistoni,
S. Conroy,
B. Obryk,
S. Popovichev
Publication year - 2019
Publication title -
hnps advances in nuclear physics
Language(s) - English
Resource type - Journals
eISSN - 2654-0088
pISSN - 2654-007X
DOI - 10.12681/hnps.1907
Subject(s) - nuclear physics , deuterium , electromagnetic shielding , jet (fluid) , neutron , nuclear engineering , tokamak , neutron activation , neutron emission , physics , neutron generator , neutron activation analysis , plasma , computational physics , neutron source , neutron temperature , mechanics , quantum mechanics , engineering
In the present work, the preanalysis of activation foil experiments to determine neutron fluence rates along JET hall ducts and labyrinths is discussed. Simulations were performed using computational codes MCNPX and FISPACT-II and a detailed model of the JET hall, including the tokamak, biological shield and penetrations. The induced activity and detector count rate were predicted for activation foils placed at selected positions within the JET hall for Deuterium-Deuterium and Deuterium-Tritium JET plasma sources. The results of the calculations showed that satisfactory counting statistics can be obtained with the use of activation detectors and therefore activation analysis offers an unbiased and robust cross-benchmarking tool for comparison against other experimental and computation techniques applied in neutron streaming studies at JET.