TWIST allow you to download files of any types existing in the 'published-data' sub-directory from any project.
To Proceed, select the Published data files tab on the bottom of the explorer view, select one or more files then select 'download' from the contextual menu or from the main menu.
screenshot 1
The original document is available at http://wiki.synchrotron-soleil.fr/tikiwiki/tiki-index.php?page=How-download-others-files