Search

Your search keyword '"Faltens, A."' showing total 880 results
Start Over Author "Faltens, A."
880 results on '"Faltens, A."'

9. Critical issues for high-brightness heavy-ion beams -- prioritized

Author

Molvik, A.W., Cohen, R., Davidson, R., Faltens, A., Friedman, A., Grisham, L., Grote, D.P., Haber, I., Kaganovich, I., Kireeff Covo, M., Kwan, J.W., Lee, E., Logan, B.G., Lund, S.M., Qin, H., Seidl, P.A., Sharp, W.M., Vay, J-L., and Yu, S.S.

Subjects
Energy conservation, consumption, and utilization
Published
2007

12. Highly Compressed Ion Beam for High Energy Density Science

Author

Friedman, A., Barnard, J.J., Briggs, R.J., Callahan, D.A., Caporaso, G.J., Celata, C.M., Davidson, R.C., Faltens, A., Grisham, L., Grote, D.P., Henestroza, E., Kaganovich I., Lee, E.P., Lee, R.W., Leitner, M., Logan, B.G., Nelson, S.D., Olson, C.L., Penn, G., Reginato, L.R., Renk, T., Rose, D., Seessler, A., Staples, J.W., Tabak, M., Thoma, C., Waldron, W., Welch, D.R., Wurtele, J., and Yu, S.S.

Subjects
Energy conservation, consumption, and utilization
Published
2005

14. Pulsed Drift Tube Accelerator

Author

Faltens, A.

Subjects
Energy conservation, consumption, and utilization, Energy conservation, consumption, and utilization
Published
2004

16. Development of superconducting magnet systems for HIF Experiments

Author

Sabbi, Gian Luca, Faltens, A., Leitzke, A., Seidl, P., Lund, S., Martovets ky, N., Chiesa, L., Gung, C., Minervini, J., Schultz, J., Goodzeit, C., Hwang, P., Hinson, W., and Meinke, R.

Subjects
Energy conservation, consumption, and utilization
Published
2004

17. Diagnostics for intense heavy ion beams in the HIF-VNL

Author

Bieniosek, F.M., Eylon, S., Faltens, A., Friedman, A., Kwan, J.W., Leitner, M.A., Molvik, A.W., Prost, L., Roy, P.K., Seidl, P.A., and Westenskow, G.

Subjects
Energy conservation, consumption, and utilization
Published
2004

19. The high current transport experiment for heavy ion inertial fusion

Author

Prost, L.R., Baca, D., Bieniosek, F.M., Celata, C.M., Faltens, A., Henestroza, E., Kwan, J.W., Leitner, M., Seidl, P.A., Waldron, W.L., Cohen, R., Friedman, A., Grote, D., Lund, S.M., Molvik, A.W., and Morse, E.

Subjects
Energy conservation, consumption, and utilization
Published
2004

22. Experimental studies of electrons in a heavy-ion beam

Author

Molvik, A.W., Cohen, R.H., Friedman, A., Covo, M. Kireeff, Lund, S.M., Westenskow, G., Bieniosek, F.M., Eylon, S., Faltens, A., Henestroza, E., Kwan, J.W., Lund, L., Prost, P.K., Roy, P.A., Seidl, P.A., Vay, J-L., and Yu, S.

Published
2004

23. HIF driver point designs

Author

Yu, S.S., Abbott, R.P., Bangerter, R.O., Barnard, J.J., Briggs, R.J., Brown, T., Callahan, D., Celata, C.M., Davidson, R., Debonnel, C.S., Faltens, A., Friedman, A., Grote, D.P., Henestroza, E., Kaganovich, I., Kwan, J.W., Heitzenroeder, P., Latkowski, J.F., Lee, E.P., Leitner, M., Logan, B.G., Lund, S.M., Meier, W., Peterson, P.F., Rose, D., Sabbi, G.-L., Seidl, P.A., Sharp, W.M., and Welch, D.R.

Published
2004

32. U.S. Heavy Ion Beam Science towards inertial fusion energy

Author

Logan, B.G., Baca, D., Barnard, J.J., Bieniosek, F.M., Burkhart, C., Celata, C.M., Chacon-Golcher, E., Cohen, R.H., Davidson, R.C., Efthimion, P., Faltens, A., Friedman, A., Grisham, L., Grote, D.P., Haber, I., Henestroza, E., Kaganovich, I., Kishek, R.A., Kwan, J.W., Lee, E.P., Lee, W.W., Leitner, M., Lund, S.M., Meier, W.R., Molvik, A.W., O'Shea, P.G., Olson, C., Olson, R.E., Prost, L.R., Qin, H., Reiser, M., Rose, D., Sabbi, G., Seidl, P.A., Sharp, W.M., Shuman, D.B., Vay, J.-L., Waldron, W.L., Welch, D., Westenskow, G.A., and Yu, S.S.

Subjects
Energy conservation, consumption, and utilization
Published
2002

33. Progress in the high current experiment (HCX) February-July 2002

Author

Seidl, P.A., Baca, D., Bieniosek, F.M., Bukh, B., Celata, C.M., Coorey, A., Dugan, C., Faltens, A., Friedman, A., Grote, D.P., Haber, I., Jordan, K., Kwan, J.W., Lund, S.M., Lee, E.P., Logan, B.G., Molvik, A.W., Prost, L., Sabbi, G., and Waldron, W.W.

Subjects
Plasma physics and fusion
Published
2002

35. The high current experiment: First results

Author

Seidl, Peter A., Baca, D., Bieniosek, F.M., Faltens, A., Lund, S.M., Molvik, A.W., Prost, L.R., and Waldron, W.L.

Subjects
Plasma physics and fusion
Published
2002

38. Progress in heavy ion driven inertial fusion energy: From scaled experiments to the integrated research experiment

Author

Barnard, J.J., Ahle, L.E., Baca, D., Bangerter, R.O., Bieniosek, F.M., Celata, C.M., Chacon-Golcher, E., Davidson, R.C., Faltens, A., Friedman, A., Franks, R.M., Grote, D.P., Haber, I., Henestroza, E., deHoon, M.J.L., Kaganovich, I., Karpenko, V.P., Kishek, R.A., Kwan, J.W., Lee, E.P., Logan, B.G., Lund, S.M., Meier, W.R., Molvik, A.W., Olson, C., Prost, L.R., Qin, H., Rose, D., Sabbi, G-L., Sangster, T.C., Seidl, P.A., Sharp, W.M., Shuman, D., Vay, J.L., Waldron, W.L., Welch, D., and Yu, S.S.

Subjects
Energy conservation, consumption, and utilization
Published
2001

40. Induction Accelerator Efficiency at 5 Hz

Author

Molvik, A.W. and Faltens, A.

Subjects
Energy conservation, consumption, and utilization
Abstract

We simulate fusion power plant driver efficiency by pulsing small induction cores at 5 Hz (a typical projected power plant repetition rate), with a resistive load in the secondary winding that is scaled to simulate the beam loading for induction acceleration. Starting from a power plant driver design that is based on other constraints, we obtain the core mass and acceleration efficiency for several energy ranges of the driver accelerator and for three magnetic alloys. The resistor in the secondary is chosen to give the same acceleration efficiency, the ratio of beam energy gain to energy input to the core module (core plus acceleration gap), as was computed for the driver. The pulser consists of a capacitor switched by FETs, Field Effect Transistors, which are gated on for the desired pulse duration. The energy to the resistor is evaluated during the portion of the pulse that is adequately flat. We present data over a range of 0.6 to 5 mu s pulse lengths. With 1 mu s pulses, the acceleration efficiency at 5 Hz is measured to be 75 percent, 52 percent, and 32 percent for thin-tape-wound cores of nanocrystalline, amorphous, and 3 percent silicon steel materials respectively, including only core losses. The efficiency increases for shorter pulse durations.

Published
2000

41. Results from the Scaled Final Focus Experiment

Author

MacLaren, S.A., de Hoon, M.J.L., Faltens, A., Ghiorso, W., and Seidl, P.

Subjects
Energy conservation, consumption, and utilization
Abstract

Vacuum ballistic focusing is the straightforward method to obtain a heavy ion beam spot size necessary to drive an inertial confinement fusion target. The beam is first expanded then focused to obtain the desired convergence angles at the exit of the last element. This is done in an attempt to achieve a focal spot size in which emittance is the limiting factor; however, aberrations and space charge will influence the spot radius. Proper scaling of particle energy, mass, beam current, beam emittance, and magnetic field replicates the dynamics of a full driver beam at the focus in a small laboratory experiment. By scaling the beam current to ~;100 mu A, 160 keV Cs+ has been used to study experimentally a proposed driver design at one-tenth scale. Once a nominal focal spot is achieved, the magnet strengths are deliberately de-tuned to simulate the effect of an off-momentum slice of the beam. Additionally, several methods will be used to inject electrons into beam following the last focusing element in order to study the neutralization of space charge and its effect on the focus. Transverse phase space and beam current density measurements at various stages of the focus will be presented as well spot size measurements from the various trials. This data will be compared to the results of a PIC model of the experiment.

Published
2000

42. Planning for an Integrated Research Experiment

Author

Barnard, J.J., Ahle, L.E., Bangerter, R.O., Bieniosek, F.M., Celata, C.M., Faltens, A., Friedman, A., Grote, D.P., Haber, I., Henestroza, E., Kishek, R.A., de Hoon, M.J.L., Karpenko, V.P., Kwan, J.W., Lee, E.P., Logan, B.G., Lund, S.M., Meier, W.R., Molvik, A.W., Sangster, T.C., Seidl, P.A., and Sharp, W.M.

Subjects
Energy conservation, consumption, and utilization, Fusion Heavy Ion Inertial fusion Driver Accelerator Systems model
Published
2000

43. Ion Sources and Injectors for HIF Induction Linacs

Author

Kwan, J.W., Ahle, L., Beck, D.N., Bieniosek, F.M., Faltens, A., Grote, D.P., Halaxa, E., Henestroza, E., Herrmannsfeldt, W.B., Karpenko, V., and Sangster, T.C.

Subjects
Energy conservation, consumption, and utilization
Published
2000

44. Experiments at The Virtual National Laboratory for Heavy Ion Fusion

Author

Seidl, P.A., Bieniosek, F.M., Celata, C.M., Faltens, A., Kwan, J.W., MacLaren, S.A., Ponce, D., Shuman, D., Yu, S., Ahle, L., Lund, S., Molvik, A., and Sangster, T.C.

Subjects
Energy conservation, consumption, and utilization
Abstract

An overview of experiments is presented, in which the physical dimensions, emittance and perveance are scaled to explore driver-relevant beam dynamics. Among these are beam merging, focusing to a small spot, and bending and recirculating beams. The Virtual National Laboratory for Heavy Ion Fusion (VNL) is also developing two driver-scale beam experiments involving heavy-ion beams with I(sub beam) ~; 1 Ampere to provide guidance for the design of an Integrated Research Experiment (IRE) for driver system studies within the next 5 years. Multiple-beam sources and injectors are being designed and a one-beam module will be built and tested. Another experimental effort will be the transport of such a beam through ~;100 magnetic quadrupoles. The experiment will determine transport limits at high aperture fill factors, beam halo formation, and the influence on beam properties of secondary electron Research into driver technology will be briefly presented, including the development of ferromagnetic core materials, induction core pulsers, multiple-beam quadrupole arrays and plasma channel formation experiments for pinched transport in reactor chambers.

Published
2000

Catalog

Books, media, physical & digital resources
See catalog results