@inproceedings{2869a123fdc34881ae71c59a5486b36e,
title = "Ion source development at the SNS",
abstract = "The US Spallation Neutron Source (SNS) has recently begun producing neutrons and is currently on track to becoming a world-leading facility for material science based on neutron scattering. The facility is comprised of an H- ion source, a linear accelerator, an accumulator ring, a liquid-Hg target and a suite of neutron scattering instruments. Over the next several years the average H- current from the ion source will be increased in order to meet the baseline facility requirement of providing 1.4 MW of beam-power to the target and the SNS power upgrade power requirement of 2+ MW on target. Meeting the latter goal will require H- currents of 70-100 mA with an RMS emittance of 0.20-0.35 π mm mrad and a ∼7% duty-factor. To date, the RF-driven-multicusp SNS ion source has only been able to demonstrate sustained operation at 33 mA of beam current at a ∼7% duty-factor. This report details our efforts to develop variations of the current ion source which can meet these requirements. Designs and experimental results are presented for helicon plasma drivers, high-power external antennas, glow-discharge plasma guns and advanced Cs systems.",
author = "Welton, {R. F.} and Stockli, {M. P.} and Murray, {S. N.} and J. Carr and J. Carmichael and Goulding, {R. H.} and Baity, {F. W.}",
year = "2007",
doi = "10.1063/1.2773649",
language = "English",
isbn = "0735404356",
series = "AIP Conference Proceedings",
pages = "87--104",
booktitle = "PRODUCTION AND NEUTRALIZATION OF NEGATIVE IONS AND BEAMS",
note = "PRODUCTION AND NEUTRALIZATION OF NEGATIVE IONS AND BEAMS: 11th International Symposium on the Production and Neutralization of Negative Ions and Beams ; Conference date: 13-09-2006 Through 15-09-2006",
}