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Akademický článek
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Publikováno v:
Proceedings of the 1999 Particle Accelerator Conference (Cat. No.99CH36366).
Improvements have been made in the performance of the ETA-II accelerator that allow a nominal 2 kA, 6 MeV beam to be focused to a spot size less that 1 mm in diameter. The improvements include reducing the energy sweep to less than /spl plusmn/0.5% o
Autor:
J.S. Hildum, W.M. Fawley, J.K. Boyd, P. Lee, George J Caporaso, K. W. Struve, Y.P. Chong, T. J. Orzechowski, J.T. Weir, F.W. Chambers, D. Rogers
Publikováno v:
Proceedings of the 1989 IEEE Particle Accelerator Conference, . 'Accelerator Science and Technology.
Detailed measurements of the time-dependent beam quality of an ATA (Advanced Test Accelerator) pulse transported on a KrF laser-photoionized benzene channel were performed. It was found that the tail portion ( tau >or=20-30 ns) of the pulse becomes s
Autor:
J.K. Boyd
Publikováno v:
Proceedings of the 1989 IEEE Particle Accelerator Conference, . 'Accelerator Science and Technology.
Laser-guided transport has been simulated in axisymmetry for intense electron beams at energies ranging from 3 to 45 MeV for currents of 2 to 5 kA. The simulation includes time variation of guiding channel formation and the time evolution of channel
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:
D. Rogers, Timothy L. Houck, J. Haimson, R.D. Ryne, J.K. Boyd, B. Mecklenburg, G.A. Westenskow
Publikováno v:
Conference Record of the 1991 IEEE Particle Accelerator Conference.
A high-power 11.4-GHz RF generator which consists of a 5.7-GHz chopping system and two 11.4-GHz traveling-wave output structures has been tested. The device was designed to generate about 500 MW of pulsed RF power at 11.4 GHz when driven by a 1-kA, 3
Autor:
J.K. Boyd
Publikováno v:
Conference Record of the 1991 IEEE Particle Accelerator Conference.
Emittance can be measured by intercepting an electron beam on a range thick plate and then observing the expansion of beamlets transmitted through small holes. The hole size is selected to minimize space charge effects. In the presence of a magnetic
Autor:
R.D. Scarpetti, J.K. Boyd, G.G. Earley, K.L. Griffin, R.G. Ken, R. Kihara, M.M. Ong, J.-M. Zentler, N.L. Back
Publikováno v:
Digest of Technical Papers. 11th IEEE International Pulsed Power Conference (Cat. No.97CH36127).
The FXR is an induction linear accelerator used for flash radiography at the Lawrence Livermore National Laboratory's Site 300 Test Facility. The FXR was originally completed in 1982 and has been in continuous use as a radiographic tool. At that time
Autor:
J.K. Boyd
Publikováno v:
Proceedings Particle Accelerator Conference.
Numerous computer codes calculate beam dynamics of particles traversing an accelerating gap. In order to carry out these calculations the electric field of a gap must be determined. The electric field is obtained from derivatives of the scalar potent