| Zugriffsnummer | 25977 |
| Dokumenttyp | Konferenzartikel |
| Sprache | Englisch |
| Titel | Superresolution of a compact neutron spectrometer at energies relevant for fusion diagnostics |
| Autor(in); Institution |
Reginatto, Marcel; 6.5, Neutronenstrahlung, PTB-Braunschweig
Zimbal, Andreas; 6.5, Neutronenstrahlung, PTB-Braunschweig
|
| Quelle/Jahr | Bayesian inference and maximum entropy methods in science and engineering : proceedings of the 30th International Workshop on Bayesian Inference and Maximum Entropy Methods in Science and Engineering:(2011), 227 - 234 |
| Schriftenreihe | AIP conference proceedings: 1305 |
| Herausgeber(in) |
Mohammad-Djafari, Ali
|
| ISBN | 978-0-7354-0860-9 |
| DOI | |
| URL | |
| Verlag | Melville, NY: American Institute of Physics |
| Konferenzangaben | International Workshop on Bayesian Inference and Maximum Entropy Methods in Science and Engineering: International Workshop on Bayesian Inference and Maximum Entropy Methods in Science and Engineering, Chamonix, 04-09, July, 2010, France |
| Klassifikationscode | PACS: 29.30.Hs ; PACS: 05.70.Ce ; PACS: 29.40.Mc ; PACS: 02.30.Rz ; PACS: 02.10.Yn |
| Freie Schlagworte | Superresolution ; Maximum entropy ; Neutron spectrometry ; Fusion diagnostics |
| Zusammenfassung | The ability to achieve resolution that is better than the instrument resolution (i.e., superresolution) is well known in optics, where it has been extensively studied. Unfortunately, there are only a handful of theoretical studies concerning superresolution of particle spectrometers, even though experimentalists are familiar with the enhancement of resolution that is achievable when appropriate methods of data analysis are used, such as maximum entropy and Bayesian methods. Knowledge of the superresolution factor is in many cases important. For example, in applications of neutron spectrometry to fusion diagnostics, the temperature of a burning plasma is an important physical parameter which may be inferred from the width of the peak of the neutron energy spectrum, and the ability to determine this width depends on the superresolution factor. Kosarev has derived an absolute limit for resolution enhancement using arguments based on a well known theorem of Shannon. Most calculations of superresolution factors in the literature, however, are based on the assumption of Gaussian, translationally invariant response functions and therefore not directly applicable to neutron spectrometers which typically have response functions not satisfying these requirements. In this work, we develop a procedure that allows us to overcome these difficulties and we derive estimates of superresolution for liquid scintillator spectrometers of a type commonly used for neutron measurements. Theoretical superresolution factors are compared to experimental results. |
Zitierung
Reginatto, M. & Zimbal, A. (2011). Superresolution of a compact neutron spectrometer at energies relevant for fusion diagnostics. International Workshop on Bayesian Inference and Maximum Entropy Methods in Science and Engineering: International Workshop on Bayesian Inference and Maximum Entropy Methods in Science and Engineering, Chamonix, 04-09, July, 2010, France. https://doi.org/10.1063/1.3573621