Modeling of a High Current H- LEBT with the Lorentz-EM 3D Ion Optics Code

Journal Article · Fri Aug 10 04:00:00 EDT 2007 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.2773669· OSTI ID:21032662

Hahto, S K; Bilbrough, D G; Keller, R ^[1]

---

1. 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, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 925; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ANIONS
BEAM CURRENTS
BEAM TRANSPORT
DESIGN
ELECTRONS
ION BEAMS
ION SOURCES
LINEAR ACCELERATORS
NEUTRON SOURCES
PLASMA
PLASMA SIMULATION