Bochum 1998 – scientific programme

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HK: Hadronen und Kerne

HK 25: Instrumentation III, Accelerators

HK 25.3: Talk

Tuesday, March 17, 1998, 14:45–15:00, A

The properties of the extracted beam at ELSA — •M. Gentner and D. Husmann — Physikalisches Institut; Nußallee 12; D-53115 Bonn

At the accelerator facility ELSA of Bonn University an external electron beam with high duty factor is produced for experiments on hadron physics in the 0.8 to 3.5 GeV range. With the method of slow resonant extraction the pulsed beam of the preaccelerators is stretched to a quasi-continuous beam for the experiments. The properties of the extracted beam, for example the emittance, depend on a number of machine parameters. These dependencies have been studied analytically and with the help of particle tracking simulations, and the calculations are compared with measurements.