A Bayesian method to estimate the neutron response matrix of a single crystal CVD diamond detector

Journal Article · Tue Jan 13 00:00:00 EST 2015 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.4905994· OSTI ID:22390865

Reginatto, Marcel; Araque, Jorge Guerrero; Nolte, Ralf; Zbořil, Miroslav; Zimbal, Andreas ^[1]; Gagnon-Moisan, Francis ^[2]

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1. Physikalisch-Technische Bundesanstalt, D-38116 Braunschweig (Germany)
2. Paul Scherrer Institut, CH-5232 Villigen (Switzerland)

Detectors made from artificial chemical vapor deposition (CVD) single crystal diamond are very promising candidates for applications where high resolution neutron spectrometry in very high neutron fluxes is required, for example in fusion research. We propose a Bayesian method to estimate the neutron response function of the detector for a continuous range of neutron energies (in our case, 10 MeV ≤ E{sub n} ≤ 16 MeV) based on a few measurements with quasi-monoenergetic neutrons. This method is needed because a complete set of measurements is not available and the alternative approach of using responses based on Monte Carlo calculations is not feasible. Our approach uses Bayesian signal-background separation techniques and radial basis function interpolation methods. We present the analysis of data measured at the PTB accelerator facility PIAF. The method is quite general and it can be applied to other particle detectors with similar characteristics.

• OSTI ID: 22390865
• Journal Information: AIP Conference Proceedings, Vol. 1641, Issue 1; Conference: MAXENT 2014: Conference on Bayesian Inference and Maximum Entropy Methods in Science and Engineering, Clos Luce, Amboise (France), 21-26 Sep 2014; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
ACCELERATOR FACILITIES
CHEMICAL VAPOR DEPOSITION
DATA ANALYSIS
DIAMONDS
DIELECTRIC TRACK DETECTORS
INTERPOLATION
MEV RANGE
MONOCRYSTALS
MONTE CARLO METHOD
NEUTRON DETECTION
NEUTRON DETECTORS
NEUTRON FLUX
NEUTRON SPECTROSCOPY
RESOLUTION
RESPONSE FUNCTIONS