COLLECTIVE EFFECTS AT INJECTION FOR THE APS-U MBA LATTICE

Conference · Sun Jun 25 00:00:00 EDT 2017

DOI:https://doi.org/10.18429· OSTI ID:1389077

Lindberg, R.; Borland, M.; Blednykh, A.

The Advanced Photon Source has proposed an upgrade to a multi-bend achromat (MBA) with a proposed timing mode calls for 48 bunches of 15 nC each. In this mode of operation we find that phase space mismatch from the booster can drive large wakefields that in turn may limit the current below that of the nominal collective instability threshold. We show that collective effects at injection lead to emittance growth that makes usual off-axis accumulation very challenging. On-axis injection ameliorates many of these issues, but we find that transverse feedback is still required. We explore the role of impedance, feedback, and phase-space mismatch on transverse instabilities at injection.

• Research Organization: Argonne National Lab. (ANL), Argonne, IL (United States)
• Sponsoring Organization: USDOE Office of Science (SC), Basic Energy Sciences (BES); Argonne National Laboratory - Advanced Photon Source
• DOE Contract Number: AC02-06CH11357
• OSTI ID: 1389077
• Resource Relation: Conference: 2016 North American Particle Accelerator Conference, 10/09/16 - 10/14/16, Chicago, IL, US
• Country of Publication: United States
• Language: English

Related Subjects

APS-U MBA LATTICE
MBA LATTICE