AGS booster tune meter kickers

摘要

The AGS Booster tune meter kicker system consists of two identical kickers for horizontal and vertical tune measurements, and a control unit utilizing a programmable logic controller. The kicker modulators are line type pulsers. The pulse energy stored in the PFN is discharged through a set of matched cables to the load magnet and a matching terminating resistor. Some RC compensation networks are used to obtain the fast rising pulse waveforms. The Booster will be used to accelerate protons, as well as many species of heavy ion beams. Thus, it will cover a wide range of revolution frequencies. To cover this wide range, tunes will be measured by kicking the beams with two different pulse lengths. The short pulse duration is about 1 (mu)s, and the long pulse duration is about 3 (mu)s. A switch mode power supply with fast command tracking speed is used for PFN charging and enables the kickers to change pulse amplitudes on a pulse-by-pulse basis. The peak current is 1500 amperes at 20 kV. The pulse repetition rate can reach up to a maximum of 200 pulses per second (pps) at 20 kV and 2000 pps at 2.5 kV.