Zobrazeno 1 - 10
of 91
pro vyhledávání: '"W.E. Nexsen"'
Autor:
Y.-J. Chen, D.P. Atkinson, Stephen Sampayan, A.L. Throop, M.A. Newton, W.E. Nexsen, H. C. Kirbie, A.C. Paul, J.C. Clark, W.C. Turner, L. V. Griffith, D.M. Barrett
Publikováno v:
Proceedings of the Eleventh International Free Electron Laser Conference.
The Experimental Test Accelerator II (ETA-II) is the first induction linac designed specifically to FEL requirements. It is primarily intended to demonstrate induction accelerator technology for high-average-power, high-brightness electron beams, and
Autor:
F. Coffield, M.A. Newton, W.C. Turner, D. Ravenscroft, Y.-J. Chen, D. S. Prono, D.M. Barrett, J.C. Clark, W.E. Nexsen, J. Watson, E.E. Bowles, George J Caporaso
Publikováno v:
Proceedings of the 1989 IEEE Particle Accelerator Conference, . 'Accelerator Science and Technology.
Designs for LIAs (linear induction accelerators) stem primarily from physics concerns about stable beam transport and emittance preservation; these concerns lead to specific design features of the induction cores and injectors, stringent requirements
Autor:
J.C. Clark, W.E. Nexsen, M.A. Makowski, D.P. Atkinson, A.C. Paul, A.L. Throop, G.A. Deis, B. W. Stallard, K.I. Thomassen, R.A. Jong, W.C. Turner, D.B. Hopkins, Ernst Ted Scharlemann
Publikováno v:
Proceedings of the 1989 IEEE Particle Accelerator Conference, . 'Accelerator Science and Technology.
The Microwave Tokamak Experiment (MTX) is under construction at Lawrence Livermore National Laboratory to investigate the feasibility of intense, pulsed microwave radiation for plasma heating on future ignition tokamaks. A high-average-power free-ele
Publikováno v:
Proceedings of the 1989 IEEE Particle Accelerator Conference, . 'Accelerator Science and Technology.
A two-aperture collimator has been used to measure the brightness of the electron beam produced by the injector and the first 20 acceleration cells of the ETA-II (Experimental Test Accelerator II) linear induction accelerator. Osmium alloy dispenser
Autor:
Hal R. Brand, Darrel L. Lager, W.C. Turner, F.E. Coffield, W.E. Nexsen, S.L. Allen, W.J. Mauer, Y.-J. Chen, L. V. Griffith, F.J. Deadrick, F.W. Chambers, A.C. Paul, S.E. Sampayan
Publikováno v:
Conference Record of the 1991 IEEE Particle Accelerator Conference.
The ETA-II linear induction accelerator is used to drive a microwave free-electron laser (FEL). Corkscrew motion, which previously limited performance, has been reduced by: (1) an improved pulse distribution system which reduces energy sweep, (2) imp
Autor:
F.W. Chambers, S.L. Allen, W.C. Turner, V.L. Renbarger, W.E. Nexsen, A.C. Paul, F.J. Deadrick
Publikováno v:
Conference Record of the 1991 IEEE Particle Accelerator Conference.
The ETA-II linear induction accelerator has pulse power and beam diagnostic sensors distributed throughout the system. The accelerator consists of an injector, 20 accelerator cells arranged in two ten-cell blocks, and a transport section leading to a
Publikováno v:
PACS2001. Proceedings of the 2001 Particle Accelerator Conference (Cat. No.01CH37268).
Beam-envelope radius, envelope angle, and beam emittance can be derived from measurements of beam radius for at least three different transport conditions. We have used this technique to reconstruct exit parameters from the FXR injector and accelerat
Autor:
M.R. Carter, G.D. Porter, W.E. Nexsen, D.L. Correll, B. W. Stallard, J. H. Foote, R.S. Hornady, C.J. Burdett, S.L. Allen
Publikováno v:
Nuclear Fusion. 29:2217-2230
The scaling of the axial potential profile measured in the Tandem Mirror Experiment-Upgrade (TMX-U) is reported. These measurements were done with the end walls at ground potential. As predicted theoretically, the results suggest that a deep thermal
Autor:
W.E. Nexsen, D.L. Correll, A.H. Futch, R. H. Munger, John F. Clauser, D. R. Slaughter, R. K. Goodman, F. H. Coensgen, J. C. Davis, C. A. Anderson, B. G. Logan, T. C. Simonen, W.F. Cummins, W. C. Condit, Gary A Hallock, B. W. Stallard, A. L. Hunt, J. H. Foote, R.S. Hornady, O. T. Strand, T. A. Casper, D. P. Grubb, R. P. Drake
Publikováno v:
Physical Review Letters. 44:1132-1135
Results from the tandem mirror experiment are described. The configuration of axial density and potential profiles are created and sustained by neutral-beam injection and gas fueling. Plasma confinement in the center cell is shown to be improved by t
Autor:
W.F. Cummins, A.H. Futch, R. P. Drake, D. P. Grubb, D.L. Correll, T. C. Simonen, R. K. Goodman, G.M. Melin, F. H. Coensgen, W.E. Nexsen, J.H. Clauser, W.C. Turner, B. W. Stallard, J. H. Foote
Publikováno v:
Nuclear Fusion. 20:655-664
This paper reports results of experiments in which mirror-confined plasmas with radii as high as 7 ion gyro-radii are produced and maintained by neutral-beam injection. In these plasmas, betas as high as 0.45 were achieved and limited only by the ava