Studies of the Characteristics of a Silicon Neutron Sensor

Abstract

Abstract-Electrical

Radiation Response of Forward Biased Float Zone and Magnetic Czochralski Silicon Detectors of Different Geometry for 1-MeV Neutron Equivalent Fluence Monitoring

“…In addition, the geometry dependence has also been investigated and shows that the main parameter which influences the silicon detector's radiation response in terms of sensitivity and fluence measurement range is the thickness as it has been previously shown in [7]- [9] and [29].…”

“…This is due to two factors: i) increasing of injection current density that is derived in details in [9] and ii) pure geometrical factor W/A (width over area of the detector) which is determined by increasing of resistance of the diode base due to increasing of resistivity of n-Si with irradiation.…”

“…Studies performed on custom made silicon p-i-n diodes have been carried out in previous works [7]- [9] and shown that the sensitivity of the devices is linked to their geometry, type and resistivity of used initial silicon material.…”

Prediction of the Response of the Commercial BPW34FS Silicon p-i-n Diode Used as Radiation Monitoring Sensors up to Very High Fluences

“…It should be clearly pointed out that this approach was used because the mathematical formulation could conveniently and successfully be used to fit and parameterize the obtained experimental data. Other theoretical approaches towards the description of I-V curves, like for example used in [17]- [19] for diodes irradiated with neutrons up to 1 cm , follow the classical semiconductor theory and might thus be regarded as more fundamental and sound. However, aim of this work is not to compare these theoretical approaches, but to parameterize the obtained data.…”

“…It shall be clearly stated that the results in this work are entirely based on the commercial BPW34FS diodes. Custom made diodes would obviously allow for further device modifications in terms of e.g., the diode base length and diode shape (see e.g., [17] and [19]), but remain to be developed, tested and optimized for the high fluences expected for the Super-LHC application.…”