Space-charge dominated beam transport in magnetic quadrupoles with large aperture ratios

Fawley, W.

doi:10.2172/10181938

Cited by 3 publications

(2 citation statements)

References 5 publications

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“…The azimuthal positions of each block are then found numerically by forcing the z-integrated harmonic overtones to zero (see ref. [3] for details).…”

Section: A Current Winding Geometrymentioning

confidence: 99%

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Design and construction of a large aperture quadrupole electromagnet

Fawley

Vella

Peters

et al. 1996

Fusion Engineering and Design

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We are currently constructing a prototype quadrupole electromagnet for the proposed Induction Linac Systems Experiment (ILSE) at LBNL. ILSE will address many physics and engineering issues relevant to the design of a heavy-ion fusion driver accelerator. The pulsed electromagnet has two layers of current windings and will produce a field gradient of 28 T/m, with a usable aperture of 6 em. It operates at a repetition rate of 1 Hz, steady-state. In this paper, we discuss how the interaction of various concerns such as maximum dynamic ap~rture, short lattice period, field quality, iron yoke weight, heat transfer, and voltage standoff have led to our particular design choices. We also present 2-and 3-D numerical calculations concerning field topography and the results of transport simulations of space-charge dominated ion beams with ILSE parameters.

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“…The azimuthal positions of each block are then found numerically by forcing the z-integrated harmonic overtones to zero (see ref. [3] for details).…”

Section: A Current Winding Geometrymentioning

confidence: 99%

“…We have used the 20 particle simulation code "HIFf' [3] were lost and the emittance growth was of order 5% or less. Consequently, we are confident that, if the magnet performs according to design, it will be able to transport the specified beam line charge without serious degradation.…”

Section: Ill Particle Simulation Studiesmentioning

confidence: 99%

Design and construction of a large aperture quadrupole electromagnet

Fawley

Vella

Peters

et al. 1996

Fusion Engineering and Design

View full text Add to dashboard Cite

show abstract

Design and construction of a large aperture, quadrupole electromagnet prototype for ILSE

Stuart

Faltens

Fawley

et al.

Proceedings Particle Accelerator Conference

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We are currently constructing a prototype quadrupole electromagnet for the proposed Induction Linac Systems Experiment (ILSE) at LBL. ILSE will address many physics and engineering issues relevant to the design of a heavyion fusion driver accelerator. The pulsed electromagnet has two layers of current windings and will produce a field gradient exceeding 25 T/m at a repetition rate of 1 Hz steady-state. In this paper, we discuss how the interaction of various concerns such as maximum dynamic aperture, short lattice period, field quality, iron yoke weight, heat transfer, and voltage standoff have led to our particular design choices. We also present 2-and 3-D numerical calculations concerning field topography and the results of transport simulations of space-charge dominated ion beams with ILSE parameters.

show abstract