[en] The TRIUMF KAON Factory is designed to produce beams of kaons, antiprotons, other hadrons and neutrinos 100 times more intense, or cleaner, than are available now, for a broad range of experiments in particle and nuclear physics. This will require a 100 μA beam of 30 GeV protons, to be produced by an interleaved sequence of two fast-cycling synchrotrons and three storage rings, with the existing TRIUMF H^- cyclotron as injector. An $11-million preconstruction study has enabled the overall design to be reviewed and prototypes of various accelerator components to be built and evaluated. Environmental, industrial and economic impact studies have also been completed. Payment of one-third of the total cost of $708 million (Canadian) has been approved by the government of British Columbia; a further third is expected from international sources, on the basis of inter-governmental consultations. A decision on the final third is expected from the government of Canada before the end of 1990. (Author) (15 refs., 7 figs.)

[en] A brief review is given of the physics potential and practical design of machines to produce beams of slow K's and antiproton's 100-1000 times more intense than those at present available. Experiments with such beams would provide significant new information on (among other topics) weak decay processes and symmetry violations, the baryonic resonance spectrum, the kaon-nuclear interaction, hypernuclei, exotic atoms, the antiproton-proton interaction and medium energy neutrino scattering. High intensity K and antiproton projects from Brookhaven, CERN, Fermilab, KEK, LAMPF, SIN, TRIUMF and the USSR are described. (auth)

[en] A proposal is in preparation at TRIUMF for a 10-15 GeV, 100 μA proton accelerator as the basis of a kaon factory to yield beams of kaons, neutrinos and other secondary particles 100 to 1000 times more intense or with much better purity than those available at present. A whole range of new measurements would become possible in both particle and nuclear physics, e.g. symmetry violations in kaon decay, neutrino scattering, meson and baryon spectroscopy, hypernuclei, exotic atoms, K⁺ studies of nuclear density, and resonance propagation in nuclei. A number of specimen experimental proposals is in preparation. Two options appear to be open for the 15 GeV accelerator. One would be a 30 Hz rapid-cycling proton synchrotron with separate accumulator and stretcher rings mounted in the same 80 m radius tunnel. The other would be a two-stage isochronous ring cyclotron using 5 T superconducting dc magnets. The first stage would be a 15 sector, 10 m radius machine going to 3.5 GeV, while the second stage of 42 sectors and 41 m radius would continue to full energy. The design of kaon beams of greater purity is also under way

[en] The TRIUMF 520 MeV H^- cyclotron came into operation in December 1974 and first delivered a 100 μA beam in July 1977. Facilities recently commissioned include a second-proton line for polarized and high resolution experiments (single turn extraction has been demonstrated at 200 MeV), a pion spectrometer, a 70/90 MeV proton beam for isotope production and a new slow (less than or equal to chemically bond 30 MeV/c) pion/muon channel. Major projects under way include a high-resolution fast pion channel, dc and rf separators to give purer stopping muon beams, and a time projection chamber. Further in the future are the possibilities of building a third (simultaneous) 400 to 500 MeV proton beam and high-flux muon and biomedical π^- channels. More fascinating still is the possibility of elevating TRIUMF from a pion to a kaon factory, producing currents 100 to 1000 times more intense than those at present available in the GeV range. Two post-accelerator designs are being considered - a 30 μA rapid cycling 8 to 10 GeV proton synchrotron (which could in turn inject into a higher-energy machine) - and a 400 μA isochronous ring-cyclotron built in two stages, the first to 3 GeV and the second to 8.5 GeV

[en] Circular machines suitable for the acceleration of high intensity proton beams include cyclotrons, FFAG accelerators, and strong-focusing synchrotrons. This paper discusses considerations affecting the design of such machines for high intensity, especially space charge effects and the role of beam brightness in multistage accelerators. Current plans for building a new generation of high intensity 'kaon factories' are reviewed. 47 refs

[en] The effect of booster energy on the cost of the AHF has been investigated. Increasing its energy raises the cost of the booster but lowers that of the main ring, creating a minimum in total cost. It is shown that this minimum occurs where the apertures of the booster and the main ring magnets are simultaneously matched to the beam emittance. For high intensity (∼100 μA) boosters, such as LAMPF II, the minimum is quite pronounced. For lower intensity (∼25 μA) boosters, (such as the AHF) it is shallower and other considerations may outweigh those of cost in choosing the energy

[en] This note considers various possible waveforms for the magnets in the 50 Hz 3 GeV booster and 10 Hz 30 GeV driver synchrotrons. A dual-frequency piece-wise harmonic waveform is shown to offer a significant advantage for the driver but probably not for the booster. Adding a second harmonic to the fundamental is found to be less effective than dual frequency. Finally the question of an ideal waveform is considered from the point of view of minimizing the rf voltage: such a waveform is found to offer other advantages as well. (Author) 4 refs., 4 figs., tab

[en] The KAON Factory will provide 30 GeV protons with 100 μA currents - 80 times more intense than available at present and capable of producing correspondingly more intense, or cleaner, beams of secondary particles, particularly kaons, antiprotons and neutrinos. To accelerate a 100 μA beam from the TRIUMF cyclotron a chain composed of two fast cycling synchrotrons and three storage rings has been proposed. Various design features, such as H^- stripping injection, high transition energy and bucket-to-bucket beam transfer, will avoid or reduce beam loss. Recent design developments are summarized, including experimental work on rf cavities and successful demonstrations of the feasibility of extracting H^- ions from the cyclotron. Progress is also reported on the acceleration of polarized protons, the rf separation of kaon beams and on magnet design near production targets. The proposal received favorable technical and economic reviews during 1986. It is now being taken forward to the Canadian government with the strong backing of the Province of British Columbia

[en] The TRIUMF H^- cyclotron, in operation for seven years, is described in terms of typical beam characteristics, layout of the facility, and goals of higher machine reliability to maximize scientific output. Overall cyclotron performance, beam production, shutdowns, and equipment modifications are discussed. Studies toward development of a kaon factory at TRIUMF are described

No abstract available