# A computational EXFOR database

## TL;DR

This paper describes converting the EXFOR nuclear physics database into a MongoDB format, enabling easier programmatic access and improving transparency and reproducibility of data evaluations.

## Contribution

It introduces an open-source conversion of the EXFOR library into a MongoDB database with tools for easy access from multiple programming languages.

## Key findings

- Successful conversion of EXFOR to MongoDB
- Open-source code and Docker setup provided
- Enhanced accessibility for nuclear data evaluations

## Abstract

The EXFOR library is a useful resource for many people in the field of nuclear physics. In particular, the experimental data in the EXFOR library serves as a starting point for nuclear data evaluations. There is an ongoing discussion about how to make evaluations more transparent and reproducible. One important ingredient may be convenient programmatic access to the data in the EXFOR library from high-level languages. To this end, the complete EXFOR library can be converted to a MongoDB database. This database can be conveniently searched and accessed from a wide variety of programming languages, such as C++, Python, Java, Matlab, and R. This contribution provides some details about the successful conversion of the EXFOR library to a MongoDB database and shows simple usage examples to underline its merits. All codes required for the conversion have been made available online and are open-source. In addition, a Dockerfile has been created to facilitate the installation process.