Build up of Electron Cloud with Different Bunch Pattern in the Presence of Solenoid Field | Zendy

Yunhai Cai | Zendy

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Build up of Electron Cloud with Different Bunch Pattern in the Presence of Solenoid Field

Author(s) -

Yunhai Cai

Publication year - 2003

Publication title -

osti oai (u.s. department of energy office of scientific and technical information)

Language(s) - English

Resource type - Reports

DOI - 10.2172/813107

Subject(s) - electron , physics , cyclotron , positron , population , atomic physics , space charge , solenoid , nuclear physics , computational physics , quantum mechanics , demography , sociology

We have augmented the code POSINST to include solenoidfields, and used it to simulate the build up of electron cloud due toelectron multipacting in the PEP-II positron ring. We find that thedistribution of electrons is strongly affected by the resonancesassociated with the cyclotron period and bunch spacing. In addition, wediscover a threshold beyond which the electron density growsexponentially until it reaches the space charge limit. The threshold doesnot depend on the bunch spacing but does depend on the positron bunchpopulation

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