BNL, Upton, Long Island, New York, USA
Accelerator Device Object (ADO) specification and its original implementation are almost 20 years old. In those last two decades ADO development methodology has changed very little, which is a testament to its robust design, however during this time frame we've seen introduction of many new technologies and ideas, many of which with applicable and tangible benefits to control system software. This paper describes how some of these concepts like convention over configuration, aspect oriented programming (AOP) paradigm, which coupled with powerful techniques like bytecode generation and manipulation tools can greatly simplify both server and client side development by allowing developers to concentrate on the core implementation details without polluting their code with: 1) synchronization blocks 2) supplementary validation 3) asynchronous communication calls or 4) redundant bootstrapping. In addition to streamlining existing fundamental development methods we introduce additional concepts, many of which are found outside of the majority of the controls systems. These include 1) ACID transactions 2) client and servers-side dependency injection and 3) declarative event handling.
BNL, Upton, Long Island, New York, USA
Using geological map data to serve as a visualization for components of a Controls System provides Main Control Room Operators an easy way to both identify and locate conditions within specific parts of an accelerator complex that may require attention. Google's Map API provides a simple and convenient way to display some of C-AD's Controls System data and provide location and status feedback using dynamic symbols and animations. This paper describes the details of how chipmunk and beam loss data visualization can be implemented for the AGS/RHIC Controls system. Most of the server side and client site software can be easily adapted to many other similar types of data visualizations.
Wenge Fu, Seth Nemesure, Brookhaven National Laboratory, Upton, NY 11973, USA