Power supply system for the TRIUMF KAON factory
The TRIUMF KAON factory consists of five rings, three of which are DC powered, and two synchrotrons running at 50 Hz and 10 Hz, respectively. The author deals with the power supply system envisaged for the accelerator as well as the experimental results obtained using DC-biased single- and dual-frequency resonant magnet excitation for the booster and driver synchrotrons. Test results show that due to the high Q of the circuits, a relatively small mismatch effectively doubles the current requirements from the power supply feeding the pulsed forming network. This implies that the nominal rating of the supply must be significantly higher than that required for optimum tune.<<ETX>>
Frequency-domain analysis of resonant-type ring magnet power supplies
For fast-cycling synchrotrons, resonant-type ring magnet power supplies are commonly used to provide a DC-biased AC excitation for the ring magnets. Up to the present, this power supply system has been analyzed using simplified analytical approximation, namely assuming the resonant frequency of the ring magnet network is fixed and equal to the accelerator frequency. This paper presents a frequency-domain analysis technique for a more accurate analysis of resonant-type ring magnet power supplies. This approach identifies that, with the variation of the resonant frequency, the operating conditions of the power supply change quite dramatically because of the high and value of the resonant network. The analytical results are verified, using both experimental results and simulation results.<<ETX>>
A slowly rotating coil system for AC field measurements of Fermilab Booster correctors
A method for measurement of rapidly changing magnetic fields has been developed and applied to the testing of new room temperature corrector packages designed for the Fermilab Booster Synchrotron. The method is based on fast digitization of a slowly rotating tangential coil probe, with analysis combining the measured coil voltages across a set of successive magnet current cycles. This paper presents results on the field quality measured for the normal and skew dipole, quadrupole, and sextupole elements in several of these corrector packages.