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RWA
The Rotating-wave accelerator is
a compact and high-power electron accelerator that allows
efficient acceleration of electrons to high velocities.
 Overview
The RWA accelerator developed by Acelera uses a
single, smooth-wall cylindrical cavity holding a
transverse-magnetic field to accelerate electrons to higher
energies. The accelerator is designed to operate at UHF or
microwave frequencies and uses a set of electromagnets to
provide the required magnetic field for efficient acceleration
of low energy electron beams.
Advantages
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The RWA offers twice the efficiency of conventional small
accelerators in addition to having a greater degree of
simplicity and a more compact design.
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Since the RWA requires half the electrical power to operate,
this translates into a 50% savings in electrical power
costs.
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The novel RWA mechanism lends itself to high power operation
and producion of a DC-like accelerated electron beam.
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Features
The fact that the RWA uses only a single cavity (with a
length equivalent to several wavelengths) allows the use
of high accelerating electric fields without the fear of
arcing.
The
peculiar accelerating mechanism of the RWA allows for
the efficient acceleration of the entire electron beam.
That is to say, all the electrons forming the beam are
equally accelerated. This results in a dc-like
acceleration of the electron beam.
The
RWA design lends itself to very high power operation due
to the fact it uses a smooth-wall cylindrical cavity
that provides a large wall surface area for suitable
dissipation of rf power.
This accelerator has numerous possible applications
including food processing, flue gas remediation and
wastewater treatment. |
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How
does the RWA work?
The rotating-wave accelerator is composed of an
elelectron source, a single short cavity and a focusing
magnet. When rf power is injected into the cavity a
rotating mode is generated inside which presents an
axially-oriented rotating electric field. As electrons
enter the cavity, due to the magnetic field produced by
the magnet, they begin rotating about the device axis.
Under the proper conditions both the rf electric field
and the electrons rotate synchronously about the axis at
the same rate. It is this synchronous interaction that
allows the electrons to be gradually accelerated by the
rotating field in a DC-like fashion.
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