A Permanent-Magnet Microwave Ion Source For A Compact High-Yield Neutron Generator

Journal Article · Wed Jun 01 04:00:00 EDT 2011 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3586145· OSTI ID:21513403

Waldmann, O; Ludewigt, B ^[1]

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1. Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720 (United States)

We present recent work on the development of a microwave ion source that will be used in a high-yield compact neutron generator for active interrogation applications. The sealed tube generator will be capable of producing high neutron yields, 5x10{sup 11} n/s for D-T and {approx}1x10{sup 10} n/s for D-D reactions, while remaining transportable. We constructed a microwave ion source (2.45 GHz) with permanent magnets to provide the magnetic field strength of 87.5 mT necessary for satisfying the electron cyclotron resonance (ECR) condition. Microwave ion sources can produce high extracted beam currents at the low gas pressures required for sealed tube operation and at lower power levels than previously used RF-driven ion sources. A 100 mA deuterium/tritium beam will be extracted through a large slit (60x6 mm{sup 2}) to spread the beam power over a larger target area. This paper describes the design of the permanent-magnet microwave ion source and discusses the impact of the magnetic field design on the source performance. The required equivalent proton beam current density of 40 mA/cm{sup 2} was extracted at a moderate microwave power of 400 W with an optimized magnetic field.

• OSTI ID: 21513403
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 1336; ISSN 0094-243X; ISSN APCPCS
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
BARYONS
BEAM CURRENTS
BEAMS
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CURRENT DENSITY
CURRENTS
CYCLOTRON RESONANCE
DESIGN
DEUTERIUM
ELECTROMAGNETIC RADIATION
ELECTRON CYCLOTRON-RESONANCE
ELEMENTARY PARTICLES
EQUIPMENT
FERMIONS
HADRONS
HYDROGEN ISOTOPES
ION SOURCES
ISOTOPES
LIGHT NUCLEI
MAGNETIC FIELDS
MAGNETS
MICROWAVE RADIATION
NEUTRON GENERATORS
NEUTRON SOURCES
NEUTRONS
NUCLEI
NUCLEON BEAMS
NUCLEONS
ODD-EVEN NUCLEI
ODD-ODD NUCLEI
PARTICLE BEAMS
PARTICLE SOURCES
PERMANENT MAGNETS
PLASMA
PROTON BEAMS
RADIATION SOURCES
RADIATIONS
RADIOISOTOPES
RESONANCE
STABLE ISOTOPES
TRITIUM
YEARS LIVING RADIOISOTOPES