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Abstract

The position control of the JET plasma is based on the measurement of poloidal flux differences between desired inboard and outboard and between symmetric top and bottom reference positions inside the vessel. The error signals, assisted by preprogammed functions,control the output voltages of 50 Hz thyristor power supplies which are connected to vertical and radial poloidal field coils. The precision achieved is about 1 cm and plasmas with elongation ratio b/a about 1.6 can be stabilized in the be applied in future experiments. The control system is built with analogue electronics, but control functions are issued from CODAS which is the JET control and data acquisition system.

Additional information

Authors: NOLL P, JET JOINT UNDERTAING, ABINGDON, OXON. (UK);BROWN M, JET JOINT UNDERTAING, ABINGDON, OXON. (UK);HUART M, JET JOINT UNDERTAING, ABINGDON, OXON. (UK);PIACENTINI I, JET JOINT UNDERTAING, ABINGDON, OXON. (UK);SANTAGIUSTINA A, JET JOINT UNDERTAING, ABINGDON, OXON. (UK);WATKINS J R JET JOINT UNDERTAING, ABINGDON, OXON. (UK), JET JOINT UNDERTAING, ABINGDON, OXON. (UK)
Bibliographic Reference: WRITE TO THE PUBLICATIONS OFFICER, JET JOINT UNDERTAKING, ABINGDON, OXON.OX14 3EA (UK), MENTIONING REPORT JET-P(84)08, 1984
Record Number: 1989123040400 / Last updated on: 1987-01-01
Category: PUBLICATION
Available languages: en