Software upgrade for the DIII-D neutral beam control systems

Conference · Fri Nov 01 04:00:00 EST 1991

OSTI ID:5934227

Cummings, J W; Thurgood, P A

The neutral beams are used to heat the plasma in the DIII-D tokamak, a fusion energy research experiment operated by General Atomics (GA) and funded by the Department of Energy (DOE). The experiment is dedicated to demonstrating noninductive current drive of high beta high temperature divertor plasma with good confinement. The neutral beam heating system for the DIII-D tokamak uses four MODCOMP Classic computers for data acquisition and control of the four beamlines. The Neutral Beam Software Upgrade project was launched in early 1990. The major goals were to upgrade the MAX IV operating system to the latest revision (K.1), use standard MODCOMP software (as much as possible), and to develop a very user friendly,'' versatile system. Accomplishing these goals required new software to be developed and modifications to existing applications software to make it compatible with the latest operating system. The custom operating system modules to handle the message service and interrupt handling were replaced by the standard MODCOMP Inter Task Communication (ITC) and interrupt routines that are part of the MAX IV operating system. The message service provides the mechanism for doing shot task sequencing (task scheduling). The interrupt routines are used to connect external interrupts to the system. The new software developed consists of a task dispatcher, screen manager, and interrupt tasks. The existing applications software had to be modified to be compatible with the MODCOMP ITC services and consists of the Modcomp Infinity Data Base Manager, a multi-user system, and menu-driven operating system interface routines using the Infinity Data Base Manager.

• Research Organization: General Atomics, San Diego, CA (United States)
• Sponsoring Organization: DOE; USDOE, Washington, DC (United States)
• DOE Contract Number: AC03-89ER51114
• OSTI ID: 5934227
• Report Number(s): GA-A-20590; CONF-910968--60; ON: DE92005444
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700460* -- Fusion Technology-- Heating & Fueling Systems
99 GENERAL AND MISCELLANEOUS
990200 -- Mathematics & Computers
BEAM INJECTION
BEAM INJECTION HEATING
CLOSED PLASMA DEVICES
COMPUTER CODES
COMPUTERIZED CONTROL SYSTEMS
CONTROL SYSTEMS
DATA BASE MANAGEMENT
DOUBLET-3 DEVICE
Fu
Fuels-- (1992)
HEATING
MANAGEMENT
MODIFICATIONS
NEUTRAL ATOM BEAM INJECTION
ON-LINE CONTROL SYSTEMS
ON-LINE SYSTEMS
PLASMA HEATING
THERMONUCLEAR DEVICES
TOKAMAK DEVICES