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https://github.com/luca-fiorito-11/sandy

Sampling nuclear data and uncertainty
https://github.com/luca-fiorito-11/sandy

covariance-matrices endf-format nuclear-data perturbed-files sampling uncertainty uncertainty-propagation

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Sampling nuclear data and uncertainty

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SANDY



Sampling tool for nuclear data






 



SANDY is a python package that can read, write and perform a set of operations on nuclear data files in

[ENDF-6 format](https://www.oecd-nea.org/dbdata/data/manual-endf/endf102.pdf).



### Stochastic sampling of nuclear data 

The primary objective of the code, as it was originally conceived, is to produce *perturbed files* containing sampled parameters 

that represent the information stored in the evaluated nuclear data covariances.

Such files can be ultimately used to propagate uncertainties through any given compatible system using a brute force technique.



Currently, SANDY can draw samples for:

 - cross sections;

 - angular distrbutions of outgoing particles;

 - energy distrbutions of outgoing particles;

 - fission neutron multiplicities;

 - fission yields.



### API for ENDF-6 files

The recent development on SANDY extended the original goal and focused on providing a simple interface for nuclear data files in ENDF-6 format.

Nuclear data such as cross sections, fission yields, radioactive decay constants and so on can be imported into tabulated dataframes (making extensive use of `pandas`) for further post-processing, analysis, plotting, ...



Examples are available [here](https://luca-fiorito-11.github.io/sandy_notebooks/).

 

 ***



## :wrench: Installation



SANDY can be installed both on Linux (recommended) or Windows (using Anaconda).

The installation instructions are available [here](https://github.com/luca-fiorito-11/sandy/blob/develop/INSTALL.md).







## :hourglass: Development history and releases



The [latest](https://github.com/luca-fiorito-11/sandy/releases/latest) and older releases of SANDY are available [here](https://github.com/luca-fiorito-11/sandy/releases). 







## :notebook_with_decorative_cover: Documentation



The official SANDY documentation can be found [here](https://luca-fiorito-11.github.io/sandy-docs/index.html).







## :video_game: Jupyter notebooks



[Here](https://luca-fiorito-11.github.io/sandy_notebooks/) you can find some cool [Jupyter notebooks](https://jupyter.org/) that kind of give an idea of what one can do with SANDY. 







## :telephone_receiver: Contacts



* [**Luca Fiorito**](https://github.com/luca-fiorito-11) - [email protected]







## :bookmark: Acknowledgments



SANDY was conceived and developed as a part of the PhD thesis on *Nuclear data uncertainty propagation and uncertainty quantification in nuclear codes* in the framework of a collaboration between [SCK CEN](https://www.sckcen.be) and [ULB](http://www.ulb.ac.be).







## :clipboard: Reference



Among the publications about SANDY, please use the following as references for citation.



 - L. Fiorito, J. Dyrda and M. Fleming, [*JEFF-3.3 covariance application to ICSBEP using SANDY and NDAST*](https://doi.org/10.1051/epjconf/201921107003), EPJ Web of Conferences 211, 07003 (2019)



 - L. Fiorito, G. Žerovnik, A. Stankovskiy, G. Van den Eynde, P.E. Labeau, [*Nuclear data uncertainty propagation to integral responses using SANDY*](http://www.sciencedirect.com/science/article/pii/S0306454916305278), Annals of Nuclear Energy, Volume 101, 2017, Pages 359-366, ISSN 0306-4549.







## :earth_africa: Publications



[Here](https://www.webofscience.com/wos/alldb/summary/4fbd3df7-2148-4510-b95c-91ac22b111b6-6bbbab39/date-descending/1) is a (incomplete) list of scientific studies citing SANDY.



> If some info are not correct or missing, please let us know!