Speaker
Description
The proposed 100 MeV injector* is designed to renovate LANSCE accelerator facility by replacing the 750-keV Cockcroft-Walton injectors, supporting its unique function of delivering multiple, simultaneous beam flavors to several targets. Accelerating multiple beam types in a single RFQ at LANSCE restricts the ability to optimally tune acceleration and focusing due to inherent differences in beam properties (current, charge per bunch, emittance). Strong beam space charge forces induce coupling between degrees of freedom, leading to an unavoidable mismatch in the Front End that necessitates careful six-dimensional matching with accelerator structures. Unavoidable transients of beam chopping in Low Energy Beam Transport results in development of satellite bunches after 3-MeV RFQ accelerator and necessity to remove them using sophisticated chopper system after RFQ. The paper addresses critical challenges within the proposed Front End and advances solutions for their mitigation.
Footnotes
- Y. K. Batygin et al, “Advancement of LANSCE Front End Accelerator Facility”, in Proc. IPAC’21, Campinas, Brazil, May 2021, p.1894 (2021).
Funding Agency
The research presented in this paper was supported by the Laboratory Directed Research and Development program of Los Alamos National Laboratory under project number 20240177ER.
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