Ion-source and LEBT issues with the front-end systems for the Spallation Neutron Source
Conference
·
OSTI ID:787119
- LBNL Library
The Front-End Systems (FES) of the Spallation Neutron Source (SNS) project are being built by Berkeley Lab and will deliver a pulsed 40-mA H{sup -} ion beam at 2.5 MeV energy to the subsequent Drift-Tube Linac. The FES accelerator components comprise an rf driven, volume-production, cesium-enhanced, multi-cusp Ion Source; an electrostatic Low-Energy Beam Transport (LEBT) that includes provisions for transverse focusing, steering, and beam chopping; an RFQ accelerator; and a Medium-Energy Beam Transport (MEBT) line. The challenges for Ion Source and LEBT design are the generation of a plasma suitable for creating the required high H{sup -} ion density, lifetime of the rf antenna at 6% duty factor, removal of the parasitic electron population from the extracted negative ions, and emittance conservation. The paper discusses these issues in detail and highlights key experimental results obtained so far.
- Research Organization:
- Lawrence Berkeley National Lab., CA (US)
- Sponsoring Organization:
- USDOE Director, Office of Science. Office of Basic Energy Studies (US)
- DOE Contract Number:
- AC03-76SF00098
- OSTI ID:
- 787119
- Report Number(s):
- LBNL--47709
- Country of Publication:
- United States
- Language:
- English
Similar Records
Design, operational experiences and beam results obtained with the SNS H- ion source and LEBT at Berkeley Lab
The New LEBT for the Spallation Neutron Source Power Upgrade Project
Modeling of a High Current H- LEBT with the Lorentz-EM 3D Ion Optics Code
Conference
·
Mon Apr 15 00:00:00 EDT 2002
·
OSTI ID:799593
The New LEBT for the Spallation Neutron Source Power Upgrade Project
Conference
·
Sun Dec 31 23:00:00 EST 2006
·
OSTI ID:935369
Modeling of a High Current H- LEBT with the Lorentz-EM 3D Ion Optics Code
Journal Article
·
Fri Aug 10 00:00:00 EDT 2007
· AIP Conference Proceedings
·
OSTI ID:21032662