NDLI: Recent progress on beam stability study in the PSR

Content Provider	IEEE Xplore Digital Library
Author	Wang, T. Channell, P. Cooper, R. Fitzgerald, D. Hardek, T. Hutson, R. Jason, A. Macek, R. Plum, M. Wilkinson, C. Colton, E.
Copyright Year	1995
Description	Author affiliation: Los Alamos Nat. Lab., NM, USA (Wang, T.; Channell, P.; Cooper, R.; Fitzgerald, D.; Hardek, T.; Hutson, R.; Jason, A.; Macek, R.; Plum, M.; Wilkinson, C.; Colton, E.)
Abstract	A fast transverse instability has been observed in the Los Alamos Proton Storage Ring (PSR) when the injected beam intensity reaches more than 2/spl times/10/sup 13/ protons per pulse. Understanding the cause and control of this instability has taken on new importance as the neutron-scattering community considers the next generation of accelerator-driven spallation-neutron sources, which call for peak proton intensities of 10/sup 14/ per pulse or higher. Previous observations and theoretical studies indicate that the instability in the PSR is most likely driven by electrons trapped within the proton beam. Recent studies using an experimental electron-clearing system and voltage-biased pinger-electrodes for electron clearing and collection support this hypothesis. Experiments have also been performed to study the instability threshold when varying the electron production rate. Theoretical studies include a computer simulation of a simplified model for the e-p instability and the investigation of possible electron confinement in the ring-element magnetic fields. This paper reports some recent results from these studies.
Starting Page	3146
Ending Page	3148
File Size	344320
Page Count	3
File Format	PDF
ISBN	0780329341
DOI	10.1109/PAC.1995.505812
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1995-05-01
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Stability Protons Storage rings Particle beam injection Acceleration Electron beams Electron traps Particle beams Voltage Production
Content Type	Text
Resource Type	Article

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