NDLI: The Alcator C-Mod lower hybrid current drive experiment low power microwave and active control system

Content Provider	IEEE Xplore Digital Library
Author	Terry, D. Burke, W. Grimes, M. Gwinn, D. Irby, J. Kambouchev, N. Parker, R. Woskov, P.
Copyright Year	2002
Description	Author affiliation: Plasma Sci. & Fusion Center, MIT, Cambridge, MA, USA (Terry, D.; Burke, W.; Grimes, M.; Gwinn, D.; Irby, J.; Kambouchev, N.; Parker, R.; Woskov, P.)
Abstract	A 3 MW (upgradeable to 4 MW) 4.6 GHz Lower Hybrid Current Drive (LHCD) system is being implemented on Alcator C-Mod to control and sustain current profile evolution. The LHCD low-power microwave and active control system, using fast vector modulators, will provide a phase and amplitude controlled driver for each of twelve 4.6 GHz, 250 kW klystrons. Resulting phase and power outputs of each klystron will be monitored by I-Q detectors and made available for closed-loop control of the klystron phase and amplitude during plasma shots. Synchronized digital controllers will be implemented for each control loop and operation will be coordinated with external fast protection circuitry provided in the LHCD transmitter and coupler protection systems.
Starting Page	23
Ending Page	26
File Size	324352
Page Count	4
File Format	PDF
ISBN	0780370732
DOI	10.1109/FUSION.2002.1027633
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2002-01-25
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Control systems Klystrons Phase modulation Amplitude modulation Monitoring Gunshot detection systems Phase detection Detectors Plasmas Digital control
Content Type	Text
Resource Type	Article

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Lower hybrid low power microwave active control system design, installation and testing on Alcator C-Mod

Lower Hybrid Current Drive on Alcator C-Mod: System Design, Implementation, Protection, Calibration and Performance

A Lower Hybrid Current Drive System for Alcator C-Mod

The Alcator C-Mod lower hybrid current drive experiment transmitter and power system

Serial fiber optic links for the lower hybrid current drive control system on Alcator C-Mod

Commissioning of the Lower Hybrid Current Drive System on Alcator C-Mod

The Coupler Protection System Upgrade for Lower Hybrid Current Drive on Alcator C-Mod

Control and Data Acquisition System for Lower Hybrid Current Drive in Alcator C-Mod

Recovery of Efficient Lower Hybrid Current Drive at a Low Greenwald Fraction in Alcator C-mod High-density Plasmas

The Alcator C-Mod lower hybrid current drive experiment low power microwave and active control system

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