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THP104 Numerical Estimation of Beam Break-Up Instability in TESLA Cavities 1178
SUSP041   use link to see paper's listing under its alternate paper code  
 
  • V. Volkov, V.M. Petrov
    BINP SB RAS, Novosibirsk, Russia
 
  In this article the numerically estimated BBU instability behaviors of a 9 cell superconducting TESLA cavity are presented for first two pass-band trapped dipole modes (18 in all). The given BBU threshold current values are calculated by the method of beam energy gain averaging on phases of dipole mode fields. BBU instability behaviors in cases of applying the cavities in Linacs as well in Energy Recovery Linacs (ERLs) are considered. The BBU influence on beam emittance degradation is demonstrated. Examples for suppression of beam BBU oscillations by a solenoid focusing and applying of an external RF generator with a feedback are visualized.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-SRF2019-THP104  
About • paper received ※ 23 June 2019       paper accepted ※ 02 July 2019       issue date ※ 14 August 2019  
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