MODEL OF ELECTRON CLOUD INSTABILITY IN FERMILAB RECYCLER

Conference · Tue Oct 04 00:00:00 EDT 2016

OSTI ID:1331117

Antipov, Sergey A. ^[1]; Burov, A. ^[2]; Nagaitsev, S. ^[2]

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1. Chicago U.
2. Fermilab

An electron cloud instability might limit the intensity in the Fermilab Recycler after the PIP-II upgrade. A multibunch instability typically develops in the horizontal plane within a hundred turns and, in certain conditions, leads to beam loss. Recent studies have indicated that the instability is caused by an electron cloud, trapped in the Recycler index dipole magnets. We developed an analytical model of an electron cloud driven instability with the electrons trapped in combined function dipoles. The resulting instability growth rate of about 30 revolutions is consistent with experimental observations and qualitatively agrees with the simulation in the PEI code. The model allows an estimation of the instability rate for the future intensity upgrades.

• Research Organization: Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
• Sponsoring Organization: USDOE Office of Science (SC), High Energy Physics (HEP)
• DOE Contract Number: AC02-07CH11359
• OSTI ID: 1331117
• Report Number(s): FERMILAB-CONF-16-428-AD; 1493785
• Resource Relation: Conference: 2nd North American Particle Accelerator Conference, Chicago, Illinois, USA, 10/09-10/14/2016
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS