Drive to generate digital current for control vertical field in a small Tokamak

Drive to generate digital current for control vertical field in a small Tokamak

The horizontal position of a small Tokamak plasma has been controlled by a circuit to generate the control vertical field. The circuit must respond quickly to the position signal from a feedback circuit and feed a large current in a short time. We have assembled the circuit to generate a digital cur...

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Veröffentlicht in:IEEE transactions on instrumentation and measurement 1999-10, Vol.48 (5), p.1001-1004
Hauptverfasser: Mizuno, Y., Sometani, T.
Format: Artikel
Sprache:eng
Schlagworte:
Capacitors
Circuits
Coils
Digital
Digital control
Electric circuits
Feedback circuits
Feedback control
Instrumentation
Plasma confinement
Plasma measurements
Position control
Resistors
Tokamak devices
Tokamaks
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Beschreibung
Zusammenfassung:The horizontal position of a small Tokamak plasma has been controlled by a circuit to generate the control vertical field. The circuit must respond quickly to the position signal from a feedback circuit and feed a large current in a short time. We have assembled the circuit to generate a digital current called a drive. The drive includes several units, and each unit is made up of a capacitor, a transistor, a protective resistor and a comparator. We have installed the drive on a small Tokamak, the Hamana-T and obtained satisfactory results. The performance of the drive is described.
ISSN:0018-9456
1557-9662
DOI:10.1109/19.799661