Characterization of Alpha Decays and Detector Response and Search for 5.5 MeV Solar Axions in DEAP-3600

In the framework of the MICADO (Measurement and Instrumentation for Cleaning And Decommissioning Operations) European Union (EU) project, aimed at the full digitization of low- and intermediate-level radioactive waste management, a set of 32 solid state thermal neutron detectors named SiLiF has been built and characterized. MICADO encompasses a complete active and passive characterization of the radwaste drums with neutrons and gamma rays, followed by a longer-term monitoring phase. The SiLiF detectors are suitable for the monitoring of nuclear materials and can be used around radioactive waste drums possibly containing small quantities of actinides, as well as around spent fuel casks in interim storage or during transportation. Suitable polyethylene moderators can be exploited to better shape the detector response to the expected neutron spectrum, according to Monte Carlo simulations that were performed. These detectors were extensively tested with an AmBe neutron source, and the results show a quite uniform and reproducible behavior.

Download Full-text

Spectral characterization of plastic scintillation detector response as a function of magnetic field strength

Physics in Medicine and Biology ◽

10.1088/1361-6560/aab56c ◽

2018 ◽

Vol 63 (8) ◽

pp. 085001 ◽

Cited By ~ 4

Author(s):

E Simiele ◽

R-P Kapsch ◽

U Ankerhold ◽

W Culberson ◽

L DeWerd

Keyword(s):

Magnetic Field ◽

Field Strength ◽

Magnetic Field Strength ◽

Scintillation Detector ◽

Spectral Characterization ◽

Detector Response ◽

Plastic Scintillation ◽

Plastic Scintillation Detector

Download Full-text

A novel technique for the characterization of a HPGe detector response based on pulse shape comparison

2008 IEEE Nuclear Science Symposium Conference Record ◽

10.1109/nssmic.2008.4775037 ◽

2008 ◽

Author(s):

F.C.L. Crespi ◽

F. Camera ◽

B. Million ◽

M. Sassi ◽

O. Wieland ◽

...

Keyword(s):

Hpge Detector ◽

Pulse Shape ◽

Detector Response ◽

Shape Comparison ◽

Novel Technique

Download Full-text

Characterization of Smoke From Smoldering Combustion for the Evaluation of Light Scattering Type Smoke Detector Response

Journal of Fire Protection Engineering ◽

10.1177/104239159200400103 ◽

1992 ◽

Vol 4 (1) ◽

pp. 17-32 ◽

Cited By ~ 7

Author(s):

B. J. Meacham ◽

V. Motevalli

Keyword(s):

Light Scattering ◽

Detector Response ◽

Smoke Detector ◽

Smoldering Combustion

Download Full-text

Optical and Electrical Characterization of Copper-and Chlorine-Doped Cadmium Zinc Telluride

MRS Proceedings ◽

10.1557/proc-487-59 ◽

1997 ◽

Vol 487 ◽

Cited By ~ 1

Author(s):

J. E. Toney ◽

B. A. Brunett ◽

T. E. Schlesinger ◽

E. Cross ◽

F. P. Doty ◽

...

Keyword(s):

Electrical Characterization ◽

Charge Collection ◽

Detector Response ◽

Induced Current ◽

Current Voltage ◽

Current Voltage Characteristics ◽

Transient Spectroscopy ◽

Cadmium Zinc ◽

Low Temperature Photoluminescence

AbstractWe have used low-temperature photoluminescence spectroscopy and photo-induced current transient spectroscopy to study the properties of copper-doped Cd1−xZnxTe with x=0.1 and chlorine-doped Cd1−xZnxTe with x=0.2, 0.35 and 0.5. The current-voltage characteristics and detector response were also measured. We observed variations in charge collection and resistivity in the Cu-doped samples which was correlated with variations in PICTS spectra. The Cl-doped material was found to have insufficient resistivity for detector operation.

Download Full-text

The gamma and neutron monitor counters for the MICADO project

EPJ Web of Conferences ◽

10.1051/epjconf/202125308002 ◽

2021 ◽

Vol 253 ◽

pp. 08002

Author(s):

Paolo Finocchiaro ◽

Luigi Cosentino ◽

Quentin Ducasse ◽

Sergio Lo Meo ◽

Fabio Longhitano ◽

...

Keyword(s):

Radioactive Waste ◽

Gamma Ray ◽

Detector Response ◽

Spent Fuel ◽

Silicon Photomultiplier ◽

Neutron Detectors ◽

Intermediate Level Radioactive Waste ◽

Eu Project ◽

Interim Storage

In the framework of the MICADO (Measurement and Instrumentation for Cleaning And Decommissioning Operations) European Union (EU) project, aimed at the full digitization of low and intermediate-level radioactive waste (radwaste) management, a set of 32 solid state thermal neutron detectors, named SiLiF, and 36 gamma-ray counters based on a scintillating fiber readout at each end by a silicon photomultiplier, named SciFi, have been built and characterized. MICADO project encompasses a complete active and passive characterization of the radwaste drums with neutrons and gamma rays, followed by a longer-term monitoring phase. The detectors described are suitable for the monitoring of nuclear materials and can be used around radioactive waste drums possibly containing small quantities of actinides, as well as around spent fuel casks in interim storage or during transportation. Suitable polyethylene moderators, for the SiLiF detectors, can be exploited to better shape the detector response to the expected neutron spectrum, according to Monte Carlo simulations that were performed. The SciFi detectors were thoroughly tested with a 22Na and a 137Cs gamma-ray sources. Both detectors described were tested with an intense AmBe source of neutron and gamma ray. The results are satisfactory and show a quite uniform and reproducible behavior. The next step will be the test in a real environment.

Download Full-text

Calibration of atmospheric hydrogen measurements

Atmospheric Measurement Techniques Discussions ◽

10.5194/amtd-3-4931-2010 ◽

2010 ◽

Vol 3 (6) ◽

pp. 4931-4966 ◽

Cited By ~ 3

Author(s):

A. Jordan ◽

B. Steinberg

Keyword(s):

Fossil Fuels ◽

Detector Response ◽

Data Sets ◽

Atmospheric Concentration ◽

The Matrix ◽

Quantitative Understanding ◽

Potential Alternative ◽

Hydrogen Cycle ◽

Accurate Quantification

Abstract. Interest in atmospheric hydrogen (H2) has been growing in recent years with the prospect of H2 being a potential alternative to fossil fuels as an energy carrier. This has intensified research for a quantitative understanding of the atmospheric hydrogen cycle and its total budget, including the expansion of the global atmospheric measurement network. However, inconsistencies in published observational data constitute a major limitation in exploring such data sets. The discrepancies can be mainly attributed to difficulties in the calibration of the measurements. In this study various factors that may interfere with accurate quantification of atmospheric H2 were investigated including drifts of standard gases in high pressure cylinders. As an experimental basis a procedure to generate precise mixtures of H2 within the atmospheric concentration range was established. Application of this method has enabled a thorough linearity characterization of the commonly used GC-HgO reduction detector. We discovered that the detector response was sensitive to the composition of the matrix gas. Addressing these systematic errors, an accurate calibration scale has been generated defined by thirteen standards with dry air mole fractions ranging from 139–1226 nmol mol−1. The new scale has been accepted as the official World Meteorological Organisation's (WMO) Global Atmospheric Watch (GAW) H2 mole fraction scale.

Download Full-text