A device for automatic control of pressure in an ion-atom scattering experiment has been constructed. The system was modeled to achieve the minimum time for transition from one pressure to another. The pressure controller "learns" the system response and iterates the parameters used in "profiling" the valve voltage to reduce the transition time. The device has been used with two different scattering chambers and has worked well with both.
E. Redd and J. T. Park, "Microprocessor-based Pressure Controller," Review of Scientific Instruments, vol. 55, no. 1, pp. 119 - 121, American Institute of Physics, Dec 1984.
The definitive version is available at https://doi.org/10.1063/1.1137584
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01 Dec 1984