MLF experiment database

Nakatani, Takeshi ; Inamura, Yasuhiro  ; Otomo, Toshiya*; Moriyama, Kentaro

The neutron experimental instruments in J-PARC/MLF are equipped with the large area detector system which has thousands of pixels and many sample environment devices. The samples brought by the users (about ten thousand per year) are probed by the neutrons from high intensity pulsed source with the sample environment devices kept in the instruments as well as their own. These measurements produce them a large number of huge data with changing the measurement conditions in short time. And then, these data are repeatedly analyzed in multidimensional conditions at on-site or users' home laboratories. To meet this demand, we need the flexible data management system handling many users and many data. In this presentation, we will show the design and prototype of the database, especially the remote access from outside and the data backup from the instrument storages.