The 10 keV injector for the University of Maryland Electron Ring Project

Godlove, Terry F.; Haldemann, P.; Kehne, D.; Bernal, S.; Chin, P.; Kishek, R. A.; Li, Y.; Reiser, M.; Venturini, M.; Wang, J.G.; Zhang, W.W.; Zou, Y.; Haber, I.

doi:10.1109/pac.1999.794331

Cited by 5 publications

(2 citation statements)

References 9 publications

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“…Our experiment will be along the injector line [21]. The phase space to be reconstructed is for the case when Q1 is operated at 0.884 A and Q2 and Q3 are turned off.…”

Section: Resultsmentioning

confidence: 99%

Tomography as a diagnostic tool for phase space mapping of intense particle beams

Stratakis

Kishek

et al. 2006

Phys. Rev. ST Accel. Beams

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A technique is described for the tomographic mapping of transverse phase space in beams with space charge. Most prior studies where performed at high energy where space charge was negligible and therefore not considered in the analysis. The tomographic reconstruction process is compared with results of simulations using the particle-in-cell code WARP. The new tomographic technique is tested for beams with different intensities (both emittance and space-charge dominated), and with different initial distributions. Effects of various errors in the data collection process on the reconstructed phase space are discussed. It is shown that the crucial factor is not necessarily the number of projections but the range of angles over which the projections are taken. This study also includes a number of experimental results on tomographic phase space mapping performed on the University of Maryland Electron Ring.

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“…Our experiment will be along the injector line [21]. The phase space to be reconstructed is for the case when Q1 is operated at 0.884 A and Q2 and Q3 are turned off.…”

Section: Resultsmentioning

confidence: 99%

Tomography as a diagnostic tool for phase space mapping of intense particle beams

Stratakis

Kishek

et al. 2006

Phys. Rev. ST Accel. Beams

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“…The code has played a role in designing the injector [9], especially the inflector bend, and in testing the effects of the Panofsky quad used in injection [10]. The simulations have reproduced radial density waves observed in a prototype injector experiment [4], and played a major role in linking this phenomena to the initial particle distribution at the aperture.…”

Section: Other Issuesmentioning

confidence: 99%

PIC code simulations of collective effects in the space-charge-dominated beam of the University of Maryland Electron Ring (UMER)

Kishek

Bernal²,

Li³

et al.

Proceedings of the 1999 Particle Accelerator Conference (Cat. No.99CH36366)

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Abstract.Numerical simulation using particle-in-cell codes is a powerful tool in understanding the nonlinear dynamics of space-charge-dominated beams.The University of Maryland Electron Ring (UMER) will explore the transport of beams with intensity previously inaccessible to circular machines. The ring will also function as a testbed for accelerator codes. Applications such as heavy ion fusion and colliders require the preservation of beam quality during transport over large distances. This need for low beam emittance and small particle losses constrains the design and fabrication of the lattice and the injector. Furthermore, the non-zero energy spread leads to dispersion in the circular lattice. Simulations using the WARP code address these issues: the magnets, including the fringe field nonlinearities, are modeled realistically; dispersion matching is attempted; and effects of lattice and beam errors are examined. The simulations aid in understanding experimental results, such as the transverse density waves observed in the injector.

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