title: Instabilities of cooled antiproton beam in recycler
creator: Burov, A.
creator: Lebedev, V.
contributor: United States. Department of Energy.
publisher: Fermi National Accelerator Laboratory
date: 2007-06-01
language: English
description: The more beam is cooled, the less stable it is. In the 3.3 km
 Recycler Ring, stacked 8 GeV antiprotons are cooled both with stochastic
 (transversely) and electron (3D) cooling. Since the machine is staying near
 the coupling resonance, coupled optical functions should be used for stability
 analysis. To stabilize beam against the resistive wall instability, a digital
 damper is used. Digital dampers can be described as linear operators with
 explicit time dependence, and that makes a principle difference with analogous
 dampers. Theoretical description of the digital dampers is presented. Electron
 cooling makes possible a two-beam instability of the cooled beam with the
 electron beam. Special features of this instability are described, and the
 remedy is discussed.
subject: Time Dependence Accelerators
subject: Antiproton Beams
subject: 43 Particle Accelerators
subject: Electrons
subject: Electron Beams
subject: Electron Cooling
subject: Stability
subject: Antiprotons
subject: Accelerators
subject: Accelerators
subject: Resonance
subject: Instability
source: Journal Name: Conf.Proc.C070625:2009,2007; Conference: Presented at
 Particle Accelerator Conference (PAC 07), Albuquerque, New Mexico, 25-29 Jun
 2007
type: Article
format: 5 pages
format: Text
identifier: rep-no: FERMILAB-CONF-07-243-AD
identifier: grantno: AC02-07CH11359
identifier: osti: 922044
identifier: https://digital.library.unt.edu/ark:/67531/metadc901867/
identifier: ark: ark:/67531/metadc901867