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Title: Transverse beam stability measurement and analysis for the SNS accumulator ring

Journal Article · · Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment
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In a Field-programmable gate array (FPGA) based transverse feedback damper system we implemented in the Spallation Neutron Source (SNS) accumulator ring with the intention to stabilize the electron-proton (e-p) instability in a frequency range from 1 MHz to 300 MHz. The transverse damper could also be used as a diagnostic tool by measuring the beam transfer function (BTF). An analysis of the BTF measurement provides the stability diagram for the production beam at SNS. Our paper describes the feedback damper system and its set-up as the BTF diagnostic tool. Experimental BTF results are presented and beam stability analysis is performed based on the BTF measurements for the SNS accumulator ring.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). Spallation Neutron Source (SNS)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC05-00OR22725
OSTI ID:
1247391
Alternate ID(s):
OSTI ID: 1185813
Journal Information:
Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment, Journal Name: Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment Vol. 788 Journal Issue: C; ISSN 0168-9002
Publisher:
ElsevierCopyright Statement
Country of Publication:
Netherlands
Language:
English
Citation Metrics:
Cited by: 1 work
Citation information provided by
Web of Science

References (6)

Information from Beam Response to Longitudinal and Transverse Excitation journal January 1979
Transverse Digital Damper System for the Fermilab Anti-Proton Recycler
  • Eddy, N.; Crisp, J.; Hu, M.
  • BEAM INSTRUMENTATION WORKSHOP 2006: Twelfth Beam Instrumentation Workshop, AIP Conference Proceedings https://doi.org/10.1063/1.2401416
conference January 2006
Measurement and analysis of transverse beam transfer functions in the Fermilab Main Ring conference January 1993
Design and analysis of an FPGA-based active feedback damping system for the Spallation Neutron Source conference October 2010
Experimental tests of a prototype system for active damping of the e-p instability at the lanl PSR conference June 2007
Transverse Schottky and beam transfer function measurements in space charge affected coasting ion beams journal February 2010

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Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
Beam stability
Particle accelerators
Beam instrumentation