New EPICS Channel Archiver Based on MDSplus Data System

G. Manduchi, A. Luchetta, C. Taliercio, A. Soppelsa, A. Barbalace

Research output: Chapter in Book/Report/Conference proceedingConference contribution


The EPICS Channel Archiver is used to store data exported by EPICS I/O Controllers (IOCs). The Channel Archiver acts as a Channel Access Client (CAC) and stores recorded data, acquired via periodic scan or monitored, into indexed binary files.

MDSplus is a data management system used in several Nuclear Fusion experiments to handle experimental and configuration data. A data access Application Programming Interface (API) for local and remote data access is available for several languages, namely C, C++, Fortran, Java, Python, MATLAB and IDL, and a set of visualization tools is available for data browsing and display.

The paper presents a new implementation of the EPICS Channel Archiver which uses MDSplus for data storage. In this way, it is possible to take advantage of the availability of the local and remote data access layers of MDSplus, widely used in the fusion community to handle large sets of data.

A performance comparison between the original implementation and the new one is provided. In particular, the storage space requirements and the data access speed are considered.
Original languageEnglish
Title of host publication2010 17th IEEE-NPSS Real Time Conference
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Number of pages4
ISBN (Electronic)978-1-4244-7110-2
ISBN (Print)978-1-4244-7108-9
Publication statusPublished - 31 Dec 2011
Event17th IEEE Nuclear and Plasma Sciences Society Real-Time Conference - Lisboa, Portugal
Duration: 24 May 201028 May 2010
Conference number: 17


Conference17th IEEE Nuclear and Plasma Sciences Society Real-Time Conference
Abbreviated titleNPSS-RT2010


  • data acquisition
  • information retrieval
  • nuclear engineering computing
  • EPICS channel archiver
  • MDSplus data system
  • EPICS IO controllers
  • channel access client
  • indexed binary files
  • data management system
  • nuclear fusion experiments
  • remote data access layers
  • data access speed
  • data storage
  • Data storage systems
  • Data acquisition
  • Protocols
  • Data visualization
  • Data access
  • system monitoring


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