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>>
Magnets for TRIUMF's KAON factory
The KAON Factory will require over 2000 magnets to transport protons from the existing 500-MeV cyclotron through three storage rings and two synchrotrons and deliver them to the experiment area at 30 GeV. The magnet requirements are summarized and the results of measurements on prototypes for the 50-Hz booster magnets are compared with design values. The results of prototype work, some of the more difficult design aspects of other magnets, and the tolerances required to achieve production magnets uniform to +or-2 parts in 10/sup 4/ are discussed.<<ETX>>
Shaped Excitation Current for Synchrotron Magnets
A 500 MeV synchrotron at Argonne National Laboratory (ANL) operates at 30 Hz with its beam spill locked to neutron choppers with a precision of ± 0.5 ¿s. The average beam will be increased by running the magnets at 45 Hz. Three 45 Hz circuits are discussed which differ greatly in overall cost and complexity. The first is a conventional 45 Hz sine wave circuit. The reduction in time for beam acceleration results in a costly increase in peak RF power. This problem is avoided in the other two circuits by making the field rise slowly and fall rapidly. The second circuit discussed is resonant at 45 Hz and 90 Hz. Exciting this circuit with a mixture of dc, 45 Hz, and 90 Hz can produce a magnetic field with the same maximum dB/dt as the present 30 Hz field. A third, and possibly least expensive, solution is a novel circuit which produces 30 Hz during acceleration and 90Hz when the magnets are reset. The RF requirements are, of course, identical to present requirements during acceleration. Circuit details are given.