Modeling of a High Current H- LEBT with the Lorentz-EM 3D Ion Optics Code
- SemEquip, Inc, 34 Sullivan Road, N. Billerica, MA 01862-200 (United States)
High current electrostatic Low-Energy Beam Transport (LEBT) systems are currently being developed for several applications ranging from H- cyclotrons to high intensity linear accelerators. A new design building on the experiences gained from the Spallation Neutron Source (SNS) LEBT system was modeled recently in 2D with PBGUNS. In this paper a 3D treatment is given for this new LEBT design for a 60 mA, 65 kV H- beam. For this type of LEBT 3D modeling is essential to accurately model the deflection of the co-extracted electrons from the beam. The beam chopping and steering for RFQ injection also presents a 3D problem for the otherwise cylindrically symmetric geometry. The modeled LEBT can transport a 60 mA H- beam with 0.2 {pi} mm mrad 1-rms emittance and Twiss parameters that are in accordance with established SNS LEBT specifications.
- OSTI ID:
- 21032662
- Journal Information:
- AIP Conference Proceedings, Vol. 925, Issue 1; Conference: 11. international symposium on the production and neutralization of negative ions and beams, Santa Fe, NM (United States), 13-15 Sep 2006; Other Information: DOI: 10.1063/1.2773669; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
- Country of Publication:
- United States
- Language:
- English
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