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

## Abstract

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.

- Authors:

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

- Publication Date:

- OSTI Identifier:
- 22390865

- Resource Type:
- Journal Article

- Resource Relation:
- Journal Name: AIP Conference Proceedings; Journal Volume: 1641; Journal 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)

- Country of Publication:
- United States

- Language:
- English

- Subject:
- 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

### Citation Formats

```
Reginatto, Marcel, Araque, Jorge Guerrero, Nolte, Ralf, Zbořil, Miroslav, Zimbal, Andreas, and Gagnon-Moisan, Francis.
```*A Bayesian method to estimate the neutron response matrix of a single crystal CVD diamond detector*. United States: N. p., 2015.
Web. doi:10.1063/1.4905994.

```
Reginatto, Marcel, Araque, Jorge Guerrero, Nolte, Ralf, Zbořil, Miroslav, Zimbal, Andreas, & Gagnon-Moisan, Francis.
```*A Bayesian method to estimate the neutron response matrix of a single crystal CVD diamond detector*. United States. doi:10.1063/1.4905994.

```
Reginatto, Marcel, Araque, Jorge Guerrero, Nolte, Ralf, Zbořil, Miroslav, Zimbal, Andreas, and Gagnon-Moisan, Francis. Tue .
"A Bayesian method to estimate the neutron response matrix of a single crystal CVD diamond detector". United States.
doi:10.1063/1.4905994.
```

```
@article{osti_22390865,
```

title = {A Bayesian method to estimate the neutron response matrix of a single crystal CVD diamond detector},

author = {Reginatto, Marcel and Araque, Jorge Guerrero and Nolte, Ralf and Zbořil, Miroslav and Zimbal, Andreas and Gagnon-Moisan, Francis},

abstractNote = {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.},

doi = {10.1063/1.4905994},

journal = {AIP Conference Proceedings},

number = 1,

volume = 1641,

place = {United States},

year = {Tue Jan 13 00:00:00 EST 2015},

month = {Tue Jan 13 00:00:00 EST 2015}

}