Design and test results of kicker units for the positron accumulator ring at the APS
Three fast kicker units have been designed, tested, and installed in the positron accumulator ring (PAR) at the Advanced Photon Source (APS) for beam injection and extraction. The performance of these kicker units has been satisfactory. This paper presents the design and test results.
Analysis of the electrical noise from the APS kicker magnet power supplies
The APS kicker magnet power supplies deliver damped sinusoidal currents in excess of 2400 A peak with a half-period of 300 ns to the kicker magnets. Conducted and radiated electromagnetic interference (EMI) is created by this system in the low megahertz range. This interference affects a number of beam diagnostics in the APS injector. The sources and coupling mechanisms for the EMI generated by this system are described and solutions discussed.
High voltage pulse cable and connector experience in the kicker systems at SLAC
The SLAC (Stanford Linear Accelerator Center) 2-mile linear accelerator uses a wide variety of pulse kicker systems that require high voltage cable and connectors to deliver pulses from the drivers to the magnet loads. Many of the drivers in the SLAC kicker systems use cable lengths up to 80 ft and are required to deliver pulses of up to 40 kV, with rise and fall times on the order of 20 ns. Significant pulse degradation from the cable and connector assembly cannot be tolerated. Other drivers are required to deliver up to 80-kV, 20- mu s pulses over cables 20 ft long. Several combinations of an applicable high-voltage cable and matching connector have been used at SLAC to determine the optimum assembly that meets the necessary specifications and is reliable.<<ETX>>