A Microprocessor-Based Feedback System for Phase and Amplitude Stabilization of Superconducting Resonators
- 1 June 1977
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Nuclear Science
- Vol. 24 (3) , 1759-1761
- https://doi.org/10.1109/tns.1977.4329077
Abstract
A microprocessor-based feedback system has been designed, built and tested to provide phase and amplitude stabilization of a 150 MHz superconducting splitring accelerating resonator for heavy ions. This system has a bandwidth of 400 kHz and can operate with positive feedback as a limiter or with negative feedback locking to an external reference. Direct negative feedback has already been used to stabilize the phase of a split-loop resonator to an accuracy of 0.01 radian at 2 MV/m.1 All of the parameters of the system: gains, phase shifts, level reference, phase reference and frequency of the synthesizer are digitally controlled either manually or by the microprocessor. The advantages of this control system include automatic operation of the accelerator, pre-warning of an eventual breakdown of a resonator, and automatic recovery from such a breakdown.Keywords
This publication has 3 references indexed in Scilit:
- The superconducting split ring resonator as an accelerating structureNuclear Instruments and Methods, 1976
- A New Superconducting Heavy Ion Accelerating Structure Using Chemically Polished Lead SurfacesIEEE Transactions on Nuclear Science, 1975
- Vibration-RF Control of Superconducting-Helix Resonators for Heavy-Ion AccelerationIEEE Transactions on Nuclear Science, 1973