High efficiency laser-assisted H- charge exchange for microsecond duration beams

Sarah Cousineau; Abdurahim Rakhman; Martin Kay; Alexander Aleksandrov; Viatcheslav Danilov; Timofey Gorlov; Yun Liu; Cary Long; Alexander Menshov; Michael Plum; Andrei Shishlo; Andrew Webster; David Johnson

doi:10.1103/PhysRevAccelBeams.20.120402

High efficiency laser-assisted H- charge exchange for microsecond duration beams

Sarah Cousineau, Abdurahim Rakhman, Martin Kay, Alexander Aleksandrov, Viatcheslav Danilov, Timofey Gorlov, Yun Liu, Cary Long, Alexander Menshov, Michael Plum, Andrei Shishlo, Andrew Webster, David Johnson

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10 Scopus citations

Abstract

Laser-assisted stripping is a novel approach to H- charge exchange that overcomes long-standing limitations associated with the traditional, foil-based method of producing high-intensity, time-structured beams of protons. This paper reports on the first successful demonstration of the laser stripping technique for microsecond duration beams. The experiment represents a factor of 1000 increase in the stripped pulse duration compared with the previous proof-of-principle demonstration. The central theme of the experiment is the implementation of methods to reduce the required average laser power such that high efficiency stripping can be accomplished for microsecond duration beams using conventional laser technology. The experiment was performed on the Spallation Neutron Source 1 GeV H- beam using a 1 MW peak power UV laser and resulted in ∼95% stripping efficiency.

Original language	English
Article number	120402
Journal	Physical Review Accelerators and Beams
Volume	20
Issue number	12
DOIs	https://doi.org/10.1103/PhysRevAccelBeams.20.120402
State	Published - Dec 26 2017

Funding

This work has been partially supported by U.S. DOE Grant No. DE-FG02-13ER41967. ORNL is managed by UT-Battelle, LLC, under Contract No. DE-AC05-00OR22725 for the U.S. Department of Energy. Fermilab is operated by Fermi Research Alliance, LLC under Contract No. DE-AC02-07CH11359 with the United States Department of Energy. Notice: This manuscript has been authored by UT-Battelle, LLC, under Contract No. DE-AC05-00OR22725 with the U.S. Department of Energy.

Funders	Funder number
Fermi Research Alliance, LLC
U.S. DOE
Oak Ridge National Laboratory

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10.1103/PhysRevAccelBeams.20.120402

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abstract = "Laser-assisted stripping is a novel approach to H- charge exchange that overcomes long-standing limitations associated with the traditional, foil-based method of producing high-intensity, time-structured beams of protons. This paper reports on the first successful demonstration of the laser stripping technique for microsecond duration beams. The experiment represents a factor of 1000 increase in the stripped pulse duration compared with the previous proof-of-principle demonstration. The central theme of the experiment is the implementation of methods to reduce the required average laser power such that high efficiency stripping can be accomplished for microsecond duration beams using conventional laser technology. The experiment was performed on the Spallation Neutron Source 1 GeV H- beam using a 1 MW peak power UV laser and resulted in ∼95% stripping efficiency.",

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AU - Cousineau, Sarah

AU - Rakhman, Abdurahim

AU - Kay, Martin

AU - Aleksandrov, Alexander

AU - Danilov, Viatcheslav

AU - Gorlov, Timofey

AU - Liu, Yun

AU - Long, Cary

AU - Menshov, Alexander

AU - Plum, Michael

AU - Shishlo, Andrei

AU - Webster, Andrew

AU - Johnson, David

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High efficiency laser-assisted H- charge exchange for microsecond duration beams

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