1. Nominal Technologies for Modelling and High Level Applications of LCLS
Greg White
15-Nov-2004
July 28, 2019

2. Nominal Software Technologies
Matlab
Ad-hoc analysis
Physics Applications
Eclipse SWT/Jface
Application Framework for Interactive CS Applications (SCP)
Eclipse
IDE, collaborative software development
XAL
Modelling components
XAL (XML-RPC), AIDA (CORBA), JCA
Data Interoperability
cmlog, Err
Error handling, logging and browsing
ESD Unix Development Environment (make,cvs)
Building, source repository
Oracle
Enterprise RDB
OC4J, Jboss
Application Server
Java
Programming Language
Linux, OS X, Windows
Desktop O/S
Linux, Solaris
Server Hosts O/S
NFS
Production Host Filesystem
AFS
Development Host Filesystem
This list comprises the target, not the immediate list. That is, it does not include the short and medium term necessity of the existing SCP applications and SLC Modelling system, nor the transition period.
July 28, 2019

3. Technology Transition Timeline
July 28, 2019

4. Eclipse Framework Schematic
Applications implemented as Eclipse
plugins and features, using Matlab
for plotting and interactive analysis.
July 28, 2019

5. AIDA Is middleware for complex data interaction Basic Architecture
Model server data (Dimad, Pepoptics, XAL)
Control System data (eg SLC db, SLC BPM, EPICS CA …)
History Data (SLC History Facility, EPICS Archiver)
Basic Architecture
Distributed Client/Server with intelligent directory service
Language and O/S independent
Advantages
Fast structured data acq (~2-10ms)
Facilitates Application reimplementation and renewal by separating the application from the data source, so you can (re-)write applications on diff O/S before their data sources are moved.
July 28, 2019

6. Aida Overall Schematic
Client
AIDA Network
Server
AIDA (Da API)
AIDA DA Service
AIDA Directory Service
AIDA Data Provider
Devices
SQL
July 28, 2019

7. Hopes and Dreams
Same modelling codes used for offline analysis and design as online (Elegant/XAL?)
Matlab used for plotting and ad-hoc analysis in on-line production control system applications
Eclipse framework used for applications
“Err” system, on top of cmlog, used for error handling.
Eclipse update system used for collaborative development (EPICS 2010 for high level apps)
Thought given to which summary displays should be implemented in HTML or some other web technology.
July 28, 2019