Eight channel - 16 bit, bidirectional analog to digital monitoring and control system

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

DOI:https://doi.org/10.1109/FUSION.1991.218715· OSTI ID:5956033

Allen, J C; Callis, R W; Cary, W P; Harris, T E; Nerem, A

The DIII-D tokamak facility is currently upgrading its electron cyclotron resonance heating (ECH) system. The new system is based on 110 GHz gyrotrons developed by Varian. As part of this upgrade, the superconducting magnet power supplies were required to be remotely controlled and monitored accurately. The 110 GHz gyrotron superconducting magnet has eight coils, that are energized by current regulating power supplies. An analog to digital (A/D) system was designed to allow remote coil current monitoring and power supply programming. The A/D system is an eight channel multiplexed, 16 bit, bidirectional, fiber optically linked, analog to digital telemetry system. Design concerns and trade-offs will be discussed as will the results of in system use.

• Research Organization: General Atomics, San Diego, CA (United States)
• Sponsoring Organization: DOE; USDOE, Washington, DC (United States)
• DOE Contract Number: AC03-89ER51114
• OSTI ID: 5956033
• Report Number(s): GA-A-20604; CONF-910968--61; ON: DE92005445
• Country of Publication: United States
• Language: English

Related Subjects

665412 -- Superconducting Devices-- (1992-)
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700460* -- Fusion Technology-- Heating & Fueling Systems
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
AMPLIFIERS
ANALOG-TO-DIGITAL CONVERTERS
CLOSED PLASMA DEVICES
COMPUTERIZED CONTROL SYSTEMS
CONTROL SYSTEMS
DOUBLET-3 DEVICE
ECR HEATING
ELECTRICAL EQUIPMENT
ELECTROMAGNETS
ELECTRONIC EQUIPMENT
EQUIPMENT
Fu
Fuels-- (1992)
HEATING
HIGH-FREQUENCY HEATING
MAGNETS
MICROWAVE AMPLIFIERS
MICROWAVE EQUIPMENT
MODIFICATIONS
MONITORING
ON-LINE CONTROL SYSTEMS
ON-LINE SYSTEMS
PLASMA HEATING
SUPERCONDUCTING DEVICES
SUPERCONDUCTING MAGNETS
THERMONUCLEAR DEVICES
TOKAMAK DEVICES