Author: Lange, R.
Paper Title Page
FRBHMULT06 EPICS V4 Expands Support to Physics Application, Data Acsuisition, and Data Analysis 1338
  • L.R. Dalesio, G. Carcassi, M.A. Davidsaver, M.R. Kraimer, R. Lange, N. Malitsky, G. Shen
    BNL, Upton, Long Island, New York, USA
  • T. Korhonen
    Paul Scherrer Institut, 5232 Villigen PSI, Switzerland
  • J. Rowland
    Diamond, Oxfordshire, United Kingdom
  • M. Sekoranja
    Cosylab, Ljubljana, Slovenia
  • G.R. White
    SLAC, Menlo Park, California, USA
  Funding: Work supported under auspices of the U.S. Department of Energy under Contract No. DE-AC02-98CH10886 with Brookhaven Science Associates, LLC, and in part by the DOE Contract DE-AC02-76SF00515
EPICS version 4 extends the functionality of version 3 by providing the ability to define, transport, and introspect composite data types. Version 3 provided a set of process variables and a data protocol that adequately defined scalar data along with an atomic set of attributes. While remaining backward compatible, Version 4 is able to easily expand this set with a data protocol capable of exchanging complex data types and parameterized data requests. Additionally, a group of engineers defined reference types for some applications in this environment. The goal of this work is to define a narrow interface with the minimal set of data types needed to support a distributed architecture for physics applications, data acquisition, and data analysis.
slides icon Slides FRBHMULT06 [0.188 MB]  
MOPKN012 Hyperarchiver: An Epics Archiver Prototype Based on Hypertable 114
  • M.G. Giacchini, A. Andrighetto, G. Bassato, L.G. Giovannini, M. Montis, G.P. Prete, J.A. Vásquez
    INFN/LNL, Legnaro (PD), Italy
  • J. Jugo
    University of the Basque Country, Faculty of Science and Technology, Bilbao, Spain
  • K.-U. Kasemir
    ORNL, Oak Ridge, Tennessee, USA
  • R. Lange
    HZB, Berlin, Germany
  • R. Petkus
    BNL, Upton, Long Island, New York, USA
  • M. del Campo
    ESS-Bilbao, Zamudio, Spain
  This work started in the context of NSLS2 project at Brookhaven National Laboratory. The NSLS2 control system foresees a very high number of PV variables and has strict requirements in terms of archiving/retrieving rate: our goal was to store 10K PV/sec and retrieve 4K PV/sec for a group of 4 signals. The HyperArchiver is an EPICS Archiver implementation engined by Hypertable, an open source database whose internal architecture is derived from Google's Big Table. We discuss the performance of HyperArchiver and present the results of some comparative tests.
poster icon Poster MOPKN012 [1.231 MB]  
MOPMN015 Multi Channel Applications for Control System Studio (CSS) 271
  • K. Shroff, G. Carcassi
    BNL, Upton, Long Island, New York, USA
  • R. Lange
    HZB, Berlin, Germany
  Funding: Work supported by U.S. Department of Energy
This talk will present a set of applications for CSS built on top of the services provided by the ChannelFinder, a directory service for control system, and PVManager, a client library for data manipulation and aggregation. ChannelFinder Viewer allows for the querying of the ChannelFinder service, and the sorting and tagging of the results. Multi Channel Viewer allows the creation of plots from the live data of a group of channels.
poster icon Poster MOPMN015 [0.297 MB]  
WEPKS020 Adding Flexible Subscription Options to EPICS 827
  • R. Lange
    HZB, Berlin, Germany
  • L.R. Dalesio
    BNL, Upton, Long Island, New York, USA
  • A.N. Johnson
    ANL, Argonne, USA
  Funding: Work supported by U.S. Department of Energy (under contracts DE-AC02-06CH11357 resp. DE-AC02-98CH10886), German Bundesministerium für Bildung und Forschung and Land Berlin.
The need for a mechanism to control and filter subscriptions to control system variables by the client was described in a paper at the ICALEPCS2009 conference.[1] The implementation follows a plug-in design that allows the insertion of plug-in instances into the event stream on the server side. The client can instantiate and configure these plug-ins when opening a subscription, by adding field modifiers to the channel name using JSON notation.[2] This paper describes the design and implementation of a modular server-side plug-in framework for Channel Access, and shows examples for plug-ins as well as their use within an EPICS control system.
[1] R. Lange, A. Johnson, L. Dalesio: Advanced Monitor/Subscription Mechanisms for EPICS, THP090, ICALEPCS2009, Kobe, Japan.
[2] A. Johnson, R. Lange: Evolutionary Plans for EPICS Version 3, WEA003, ICALEPCS2009, Kobe, Japan.
poster icon Poster WEPKS020 [0.996 MB]