Development of a Laser-Powered Dielectric Structure-Based Accelerator as a Stand-Alone Particle Source

Journal Article · Thu Nov 04 00:00:00 EDT 2010 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3520356· OSTI ID:21428807

Yoder, R B ^[1]; Travish, G; Arab, E R; Fong, D; Hoyer, Z; Lacroix, U H; Vartanian, N; Rosenzweig, J B ^[2]

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1. Dept. of Physics, Manhattanville College, Purchase, NY 10577 (United States)
2. UCLA Dept. of Physics and Astronomy, Los Angeles, CA 90095-1547 (United States)

An experimental program to develop and build a dielectric-based slab-symmetric structure (the micro-accelerator platform, or MAP) for generating and accelerating low-energy electrons is underway at UCLA and Manhattanville College. This optical acceleration structure is effectively a resonant cavity powered by a side-coupled laser, and has applications as a radiation source for medicine or industry. We present recent experimental and computational results on the accelerator, and progress toward its incorporation into a self-contained particle source. Such a particle source would incorporate a micron-scale electron emitter and a non-relativistic capture region to enable self-injection into the synchronous field within the accelerator. A prototype of the accelerator itself has been constructed from candidate dielectric materials using micromanufacturing techniques; the current status of the testing program is described. A novel electron emitter incorporating pyroelectric crystals with field-enhancing tips has been demonstrated to produce steady currents; the results are dependent on tip geometry, and appear suitable for injection into a microstructure. Extension of the MAP concept to non-relativistic velocities, as in the stand-alone source, requires a tapered structure that gives rise to numerous complications including beam defocusing and manufacturing challenges; approaches for addressing these complications are mentioned.

• OSTI ID: 21428807
• Journal Information: AIP Conference Proceedings, Vol. 1299, Issue 1; Conference: 14. advanced accelerator concepts workshop, Annapolis, MD (United States), 13-19 Jun 2010; Other Information: DOI: 10.1063/1.3520356; (c) 2010 American Institute of Physics; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
36 MATERIALS SCIENCE
ACCELERATION
ACCELERATORS
BEAM PRODUCTION
BEAM-PLASMA SYSTEMS
CAVITY RESONATORS
CRYSTAL STRUCTURE
DIELECTRIC MATERIALS
ELECTRON BEAM INJECTION
ELECTRON SOURCES
ELECTRONS
LASERS
MICROSTRUCTURE
RELATIVISTIC RANGE
TESTING
BEAM INJECTION
ELECTRONIC EQUIPMENT
ELEMENTARY PARTICLES
ENERGY RANGE
EQUIPMENT
FERMIONS
LEPTONS
MATERIALS
PARTICLE SOURCES
RADIATION SOURCES
RESONATORS