Long pulse analogue integrationFunded under: FP2-FUSION 10C
The paper proposes an analogue integration scheme that switches between two integrators and through digital compensation of temperature-dependent drift, giving accurate results on time-scales relevant for long pulse fusion devices. The system is accurate to within a few millivoltseconds, with no special temperature control of the environment necessary. Integration at this level of accuracy is shown for over six hours, limited by data acquisition; with optimised integrators and controlled temperature, high-accuracy usage may be possible over much longer time-scales. The method makes it possible to obtain flux measurements from flux loops, which provide the dominant input to equilibrium calculations. The complete circuit of the system can be installed on a small board.
Bibliographic Reference: Report: JET-P(93)04 EN (1993) 9 pp.
Availability: Available from the Publications Officer, JET Joint Undertaking, Abingdon, Oxon. OX14 3EA (GB)
Record Number: 199310380 / Last updated on: 1994-11-29
Original language: en
Available languages: en