A low emittance cw-electron injector for the ELBE accelerator |
| |
Authors: | D. Janssen P. vom Stein |
| |
Affiliation: | FZ-Rossendorf, Abt. FWN, Postfach 510119, 01314, Dresden, Germany |
| |
Abstract: | For applications in nuclear and radiation physics there is an increasing demand for electron beams with superior brightness in the medium energy range. This work presents the injector design for the superconducting accelerator ELBE [1]. The injector consists of a thermionic rf-gun, working at a frequency of 1.3 GHz in cw-mode. The superconducting section is based on the technology established at TESLA [2], modified for cw operation. The accelerator will deliver a 20 MeV beam with an rms energy spread of 10 keV and an average current of up to 1 mA. The normalised transverse emittance remains 1 π mm mrad. The arrangement and operating parameters of the accelerator components were settled by numerical optimization considering longitudinal beam dynamics. The results led to a nonlinear bunching scheme, which compensates the high longitudinal emittance from the thermionic rf-gun. |
| |
Keywords: | |
本文献已被 ScienceDirect 等数据库收录! |
|