Main theoretical results for a transverse feedback system with a digital IIR-filter (infinite duration impulse response filter) and FIR-filter (finite duration impulse response filter) are described. The Z-transform method is used to solve the problem of the beam dynamics in the accelerator with a digital feedback. The analytical solution for the damping time and for the eigen frequencies are obtained and the system stability analyzed.
The real-time system for electron beam dose measurements for industrial accelerators is considered in the report. The system is acceptable for all types of industrial and research accelerators: CW, DC, RF LINAC and PULSED HIGH CURRENT. The main concept consists in the measurements of beam parameters using partial absorption effect and mathematical treatment of signals from sensors. The 2 modes of operation can be used for this system: manual and full automation. The manual mode includes simple measurements of signals from sensors by oscilloscope with following treatment using simple software. The second mode is used LABView 6.1. for measurements, treatment of signals and presentation on screen PXI-1025 with printed protocol. The system was tested on the pulsed electron accelerator with kinetic energy of electron 400 keV and on the CW accelerator "Rhodotron" for electron with kinetic energy 5 MeV. This system allows to measure the primary kinetic energy of electron beam before product.
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