The First Observation of Intra Beam Stripping of Negative Hydrogen in a Superconducting Linear Accelerator

Journal Article · Sun Jan 01 00:00:00 EST 2012 · Physical Review Letters

OSTI ID:1042873

Aleksandrov, Alexander V ^[1]; Plum, Michael A ^[1]; Shishlo, Andrei P ^[1]; Galambos, John D ^[1]

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1. ORNL

We report on an experiment in which a negative hydrogen ions beam in the Spallation Neutron Source (SNS) linear accelerator was replaced with a beam of protons with similar size and dynamics. Beam loss in the superconducting part of the SNS accelerator was at least an order of magnitude lower for the proton beam. Also beam loss has a stronger dependence on intensity with H- than with proton beams. These measurements verify a recent theoretical explanation of unexpected beam losses in the SNS superconducting linear accelerator based on an intra beam stripping mechanism for negative hydrogen ions. An identification of the new physics mechanism for beam loss is important for the design of new high current linear ion accelerators and the performance improvement of existing machines

• Research Organization: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Spallation Neutron Source (SNS)
• Sponsoring Organization: USDOE Office of Science (SC)
• DOE Contract Number: DE-AC05-00OR22725
• OSTI ID: 1042873
• Journal Information: Physical Review Letters, Vol. 108, Issue 11; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

08 HYDROGEN
43 PARTICLE ACCELERATORS
ACCELERATORS
DESIGN
HYDROGEN
HYDROGEN IONS
LINEAR ACCELERATORS
NEUTRON SOURCES
PERFORMANCE
PHYSICS
PROTON BEAMS
PROTONS
SPALLATION
SUPERCONDUCTIVITY
intra beam stripping
negative hydrogen ion
proton
beam losses
superconducting linear accelerator