Cumulative beam breakup in linear accelerators with time-dependent parameters

Journal Article · Fri Oct 01 00:00:00 EDT 2004

OSTI ID:833418

Delayen, Jean

A formalism presented in a previous paper for the analysis of cumulative beam breakup (BBU) with arbitrary time dependence of the beam current and with misalignment of the cavities and focusing elements [J. R. Delayen, Phys. Rev. ST Accel. Beams 6, 084402 (2003)] is extended to include time dependence of the focusing and coupling between the beam and the dipole modes. Such time dependence, which could result from an energy chirp imposed on the beam or from rf focusing, is known to be effective in reducing BBU-induced instabilities and emittance growth. The analytical results are presented and applied to practical accelerator configurations and compared to numerical simulations.

• Research Organization: Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
• Sponsoring Organization: USDOE Office of Energy Research (ER) (US)
• DOE Contract Number: AC05-84ER40150
• OSTI ID: 833418
• Report Number(s): JLAB-ACP-04-285; DOE/ER/40150-2917; TRN: US0406713
• Resource Relation: Other Information: No journal information given for this preprint; PBD: 1 Oct 2004
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
ACCELERATORS
BEAM CURRENTS
CAVITIES
DIPOLES
FOCUSING
LINEAR ACCELERATORS
TIME DEPENDENCE