Thermal neutron flux monitors were fabricated using chemical vapor deposited single crystal diamond in a p-type/intrinsic/metal/6LiF layered structure. They were placed 80 cm above the core midplane of a 1 MW research fission reactor, where the maximum neutron flux is 2.2×109 neutrons/cm2 s. Good stability and reproducibility of the device response were observed over the whole reactor power range. A 150 000 counts/s count rate was measured at the maximum reactor power with no degradation of the detector signal. As the multiple pile-up process due to the slow readout electronics is accounted for, an excellent linearity of the diamond response is observed
Marinelli, M., Milani, E., Prestopino, G., Tucciarone, A., Verona, C., VERONA RINATI, G., et al. (2007). Synthetic single crystal diamond as a fission reactor neutron flux monitor. APPLIED PHYSICS LETTERS, 90(18), 183509 [10.1063/1.2734921].
Synthetic single crystal diamond as a fission reactor neutron flux monitor
MARINELLI, MARCO;MILANI, ENRICO;TUCCIARONE, ALDO;Verona, C;VERONA RINATI, GIANLUCA;
2007-01-01
Abstract
Thermal neutron flux monitors were fabricated using chemical vapor deposited single crystal diamond in a p-type/intrinsic/metal/6LiF layered structure. They were placed 80 cm above the core midplane of a 1 MW research fission reactor, where the maximum neutron flux is 2.2×109 neutrons/cm2 s. Good stability and reproducibility of the device response were observed over the whole reactor power range. A 150 000 counts/s count rate was measured at the maximum reactor power with no degradation of the detector signal. As the multiple pile-up process due to the slow readout electronics is accounted for, an excellent linearity of the diamond response is observedI documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
