EPICS HYPERARCHIVER: INITIAL TESTS AT ESSBILBAO

The aim of this work is to present the results obtained after different tests performed regardingdata storage for an Ion Source, by means of an EPICS control system at ESSBilbao (Spain). As a first approach, data was recorded on a MySQL database, using a traditional EPICS RDB Channel Archiver instance, maintained at ORNL SNS (USA). Nevertheless, initial results shown the need of an evolution towards a high performance scalable database. Therefore, current tests are focused on the customization and usage of a HyperArchiver instance, developed at INFN/LNL (Italy) as an extended version of the already mentioned RDB Channel Archiver, but using Hypertable as its main database. Hypertable is a distributed, high performance non relational database, released under GNU licence and focusedonlarge-scaledata-intensivetasks. At ESS-Bilbao, a slightly modifiedversionofthe HyperArchiverdeveloped at INFN/LNL (Italy) was used, due to the necessity of an improvement on the management of array variables. Regarding data retrieval and visualization, a python GUI developed at ESS-Bilbao was used, in opposition to the traditional CSS data browser, trying to make data retrieval as fast and simple as possible. Hypertable is therefore presented as a high performance alternative to the broadly extended MySQL database for any EPICS control system.