Observations of Coupling During Accumulation Using a Non-Destructive Electron Scanner in the Spallation Neutron Source Accumulator Ring

Potts, Robert; Blokland, Willem; Cousineau, Sarah; Holmes, Jeffrey

doi:10.18429/JACoW-HB2016-TUPM9Y01

Observations of Coupling During Accumulation Using a Non-Destructive Electron Scanner in the Spallation Neutron Source Accumulator Ring

Aug, 2016

6 pages

Part of Proceedings, 57th ICFA Advanced Beam Dynamics Workshop on High-Intensity and High-Brightness Hadron Beams (HB2016) : Malmö, Sweden, July 3-8, 2016

Contribution to:

- HB2016

Published: Aug, 2016

DOI:

10.18429/JACoW-HB2016-TUPM9Y01

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Abstract: (JACoW)

An electron scanner has been installed in the accumulator ring of the Spallation Neutron Source (SNS). The non-destructive device permits turn-by-turn measurements of the horizontal and vertical profiles of the proton beam during accumulation with fine longitudinal resolution. In this study the device is used to identify the source of transverse coupling in the SNS ring and to understand the impact of space charge on the evolution of the coupled beam. We present experimental observations of coupling dependent on tune, injected intensity, and accumulated intensity for a simplified accumulation scenario with no RF and no injection painting. We also investigate the effects of varying the skew quadrupoles and tune for beams with the SNS production-style ring injection and ring RF patterns.

electron
coupling
experiment
accumulation
quadrupole

References(6)

Figures(0)

[1]

in Proc. IPAC'11, pp. 17-21

S. Cousineau

[2]

in Proc. HB'12, pp. 223-225

R. Potts
,
S. Cousineau
,
J.A. Holmes

[6]

Proceedings, 17th International Conference on RF Superconductivity (SRF2015) : Whistler, Canada, September 13-18, 2015

[4]

Studies of the Montague Resonance in the SNS Accumulator Ring

R. Potts
,
S. Cousineau
,
J.A. Holmes

[5]

in Proc. PAC'05, pp. 2586- 2588

A. Aleksandrov

[6]