ABSTRACT
ICALEPCS 2001

Abstracts



TUAP001 (Poster)

Presenter: Lawrence Lagin (Lawrence Livermore National Laboratory)
email: lagin1@llnl.gov
Review Status: Proceedings Ready - 02/13/02
FullText: pdf
Eprint: cs.se/0111045

The Overview of the National Ignition Facility Distributed Computer Control System {*}

L. J. Lagin, R. C. Bettenhausen, R. A. Carey, C. M. Estes, J. M. Fisher, J. E. Krammen, R. K. Reed, P. J. VanArsdall, J. P. Woodruff

The Integrated Computer Control System (ICCS) for the National Ignition Facility is a layered architecture of 300 front-end processors (FEP) coordinated by supervisor subsystems including automatic beam alignment and wavefront control, laser and target diagnostics, pulse power, and shot control timed to 30ps. FEP computers incorporate either VxWorks on PowerPC or Solaris on UltraSPARC processors that interface to over 45,000 control points attached to VME-bus or PCI-bus crates respectively. Typical devices are stepping motors, transient digitizers, calorimeters, and photodiodes. The front-end layer is divided into another segment comprised of an additional 14,000 control points for industrial controls including vacuum, argon, synthetic air, and safety interlocks implemented with Allen-Bradley PLCs. The computer network is augmented by an ATM subnet that delivers video streams from 500 sensor cameras monitoring the 192 laser beams to operator workstations. Software is based on an object-oriented framework using CORBA distribution that incorporates services for archiving, machine configuration, graphical user interface, monitoring, event logging, scripting, alert management, and access control. Software coding using a mixed language environment of Ada95 and Java is 1/3 complete at over 300 thousand source lines. Control system installation is currently underway for the first 8 beams with project completion scheduled for 2008.
{*} This work was performed under the auspices of the U.S. Department of Energy by University of California Lawrence Livermore National Laboratory under contract No. W-7405-Eng-48.
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ICALEPCS 2001

Last updated: September 13, 2002

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