TY - JOUR
T1 - Radiation and thermal stress test on diamond detectors for the Radial Neutron Camera of ITER
AU - Vermeeren, Ludo
AU - Pompili, Fulvio
AU - Esposito, Basilio
AU - Marocco, Daniele
AU - Podda, Salvatore
AU - Riva, Marco
AU - Leysen, Willem
N1 - Score=10
PY - 2019/8/21
Y1 - 2019/8/21
N2 - The Radial Neutron Camera (RNC) of ITER (International Thermonuclear Experimental Reactor) is a multichannel detection system designed to measure the uncollided neutron flux from the fusion plasma, providing information on the neutron emissivity profiles and source strength. Fission chambers and diamond detectors are candidate detectors for the RNC In-port subsystem. This is a high radiation environment (up to 5 MGy gamma dose and n/cm2 neutron fluence) where about 500 baking cycles up to 240 °C are foreseen over the whole ITER lifetime. In order to assess the feasibility of using diamond detectors in such harsh conditions, and to study the best technological solutions, we are currently performing a set of tests to understand the behavior of diamond detectors under radiation and thermal stresses: (1) thermal stress tests at constant temperature of 240 °C and thermal cycling between 100 °C and 240 °C; (2) gamma-hardness test up to a total dose of 4.7 MGy; (3) neutron-hardness test (limited to 2 14 n/cm2 in this work).
AB - The Radial Neutron Camera (RNC) of ITER (International Thermonuclear Experimental Reactor) is a multichannel detection system designed to measure the uncollided neutron flux from the fusion plasma, providing information on the neutron emissivity profiles and source strength. Fission chambers and diamond detectors are candidate detectors for the RNC In-port subsystem. This is a high radiation environment (up to 5 MGy gamma dose and n/cm2 neutron fluence) where about 500 baking cycles up to 240 °C are foreseen over the whole ITER lifetime. In order to assess the feasibility of using diamond detectors in such harsh conditions, and to study the best technological solutions, we are currently performing a set of tests to understand the behavior of diamond detectors under radiation and thermal stresses: (1) thermal stress tests at constant temperature of 240 °C and thermal cycling between 100 °C and 240 °C; (2) gamma-hardness test up to a total dose of 4.7 MGy; (3) neutron-hardness test (limited to 2 14 n/cm2 in this work).
KW - Diamond detector
KW - Neutron radiation hardness
KW - Gamma radiation hardness
KW - Thermal stress
KW - Radial neutron camera
KW - ITER
UR - https://ecm.sckcen.be/OTCS/llisapi.dll/overview/37530474
U2 - 10.1016/j.nima.2018.10.110
DO - 10.1016/j.nima.2018.10.110
M3 - Article
SN - 0168-9002
VL - 936
SP - 62
EP - 64
JO - Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
JF - Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
ER -