Scaled electron studies at the University of Maryland

Haber, I.; Bernal, S.; Beaudoin, B.; Cornacchia, M.; Feldman, D. W.; Feldman, Robert; Fiorito, R.; Fiuza, K.; Godlove, Terry F.; Kishek, R. A.; O'Shea, P.G.; Quinn, B.; Papadopoulos, C.; Reiser, M.; Stratakis, Diktys; Sutter, David; Thangaraj, J. C. T.; Tian, Kai; Walter, M.; Wu, Chao

doi:10.1016/j.nima.2009.03.220

Cited by 6 publications

(2 citation statements)

References 12 publications

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“…The cost vs benefit of these experiments is attractive because they are able to address important physics questions at relatively low cost. Some experiments might be able to answer key questions related to HIF drivers, and we illustrate this with two examples: Paul traps (e.g., at PPPL and at Hiroshima University [79][80][81]), and UMER [21][22][23]82] are able, in principle, to achieve high space-charge tune depression and transport the beam over the equivalent of thousands of lattice periods.…”

Section: Research Opportunities Related To Other Fieldsmentioning

confidence: 99%

Research and development toward heavy ion driven inertial fusion energy

Seidl

Barnard

Faltens

et al. 2013

Phys. Rev. ST Accel. Beams

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We describe near-term heavy ion fusion (HIF) research objectives associated with developing an inertial fusion energy demonstration power plant. The goal of this near-term research is to lay the essential groundwork for an intermediate research experiment (IRE), designed to demonstrate all the key driver beam manipulations at a meaningful scale, and to enable HIF relevant target physics experiments. This is a very large step in size and complexity compared to HIF experiments to date, and if successful, it would justify proceeding to a demonstration fusion power plant. With an emphasis on accelerator research, this paper is focused on the most important near-term research objectives to justify and to reduce the risks associated with the IRE. The chosen time scale for this research is 5-10 years, to answer key questions associated with the HIF accelerator drivers, in turn enabling a key decision on whether to pursue a much more ambitious and focused inertial fusion energy research and development program. This is consistent with the National Academies of Sciences Review of Inertial Fusion Energy Systems Interim Report, which concludes that ''it would be premature at the present time to choose a particular driver approach. . .'' and encouraged the continued development of community consensus on critical issues, and to develop ''options for a community-based roadmap for the development of inertial fusion as a practical energy source.''

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Section: Research Opportunities Related To Other Fieldsmentioning

confidence: 99%

Research and development toward heavy ion driven inertial fusion energy

Seidl

Barnard

Faltens

et al. 2013

Phys. Rev. ST Accel. Beams

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“…The University of Maryland electron ring (UMER) is an electron storage ring that is 3.8 meters in diameter, which uses low energy (10 keV) electrons to study space-charge dominated beams, and that models some more costly heavy particle beam accelerators [1][2][3]. A necessary prerequisite for understanding space-charge dominated beams, and the efficient operation of the associated equipment, is the knowledge not only of the effects of space charge, but also the single particle nonlinear dynamics.…”

Section: Introductionmentioning

confidence: 99%

Differential algebraic methods for single particle dynamics studies of the University of Maryland electron ring

Nissen

Erdélyi

2010

Phys. Rev. ST Accel. Beams

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The University of Maryland electron ring is a small low energy machine for the study of space-charge dominated beams. Differential algebraic methods as implemented in COSY INFINITY offer an accurate method to study and analyze single particle nonlinear dynamics. As a starting point for space-charge related studies, we undertook a comprehensive examination of the single particle nonlinear dynamics based on differential algebra methods. Quantities such as tunes, chromaticities, dispersion, amplitude dependent tune shifts, and resonance strengths were calculated, and robustness of the solutions with respect to errors tested. The model demonstrated that the earth's magnetic field has a significant impact on the beam, and adds rich dynamics even in the absence of space charge. Initially we determined the tunes for which an injection-free idealization of the ring had the largest dynamic aperture. Our study then showed that the actual ring also had the largest dynamic aperture at these same tunes, and at these tunes was also least sensitive to errors. Comparison of predicted beam trajectories with measured data showed that the model was accurate for the examined area.

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