Dresden 2014 – scientific programme

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BE: Beschleunigerphysik

BE 4: Diagnostics and Instrumentation II

BE 4.2: Talk

Tuesday, April 1, 2014, 10:00–10:15, ZEU 255

Using a non-relational database for long term data storage in an accelerator control system — •Dennis Proft, Frank Frommberger, and Wolfgang Hillert — Elektronen-Stretcher-Anlage ELSA, Physikalisches Institut, Universität Bonn

The electron stretcher facility ELSA serves external hadron physics experiments with a beam of unpolarized and polarized electrons of up to 3.2 GeV energy. Its in house developed control system is able to provide real time beam diagnostics as well as steering tasks in one homogeneous environment.

To surveil the long term evolution of beam properties and machine states access to all parameters values at any given time is needed. This yields a huge amount of data the storage system has to cope with. In order to read back the data to user applications with low latency fast random access to the data in specific time ranges is required. Hypertable, a non-relational database system, meets these requirements and is used as the storage engine.

This talk will give details on the setup of the history storage engine on top of hypertable together with a presentation of a newly developed, powerful and easy to use graphical data browser.