Simulation of Electron Cloud Effects in the PETRA Positron Storage Ring
نویسنده
چکیده
In positron storage rings electrons produced by photoemission, ionization and secondary emission accumulate in the vacuum chamber and form an ”electron cloud ” which can reach a high charge density for some beam operation modes. Electron cloud effects have not been observed in the present operation mode of the PETRA II ring used as a preaccelerator for HERA, but with the high performance goals of the planned synchrotron radiation facility PETRA III a more complete understanding of electron cloud development and its effects on the positron beam are needed to aid in the design. The computer code ECLOUD 2.3 is used to simulate electron cloud effects for different operation modes of PETRA II and PETRA III. An effective transverse single bunch wakefield due to the electron cloud is obtained from a broad band resonator model.
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