Method and split cavity oscillator/modulator to generate pulsed particle beams and electromagnetic fields

Patent · Fri Jan 01 00:00:00 EST 1993

OSTI ID:868888

Clark, M Collins ^[1]; Coleman, P Dale ^[1]; Marder, Barry M ^[1]

---

1. Albuquerque, NM

A compact device called the split cavity modulator whose self-generated oscillating electromagnetic field converts a steady particle beam into a modulated particle beam. The particle beam experiences both signs of the oscillating electric field during the transit through the split cavity modulator. The modulated particle beam can then be used to generate microwaves at that frequency and through the use of extractors, high efficiency extraction of microwave power is enabled. The modulated beam and the microwave frequency can be varied by the placement of resistive wires at nodes of oscillation within the cavity. The short beam travel length through the cavity permit higher currents because both space charge and pinching limitations are reduced. The need for an applied magnetic field to control the beam has been eliminated.

• Research Organization: AT&T
• DOE Contract Number: AC04-76DP00789
• Assignee: United States of America as represented by United States (Washington, DC)
• Patent Number(s): US 5235248
• OSTI ID: 868888
• Country of Publication: United States
• Language: English

Related Subjects

method
split
cavity
oscillator
modulator
generate
pulsed
particle
beams
electromagnetic
fields
compact
device
called
self-generated
oscillating
field
converts
steady
beam
modulated
experiences
signs
electric
transit
microwaves
frequency
extractors
efficiency
extraction
microwave
power
enabled
varied
placement
resistive
wires
nodes
oscillation
travel
length
permit
currents
space
charge
pinching
limitations
reduced
applied
magnetic
control
eliminated
microwave frequency
electromagnetic fields
electromagnetic field
particle beam
electric field
magnetic field
magnetic fields
microwave power
particle beams
applied magnetic
space charge
split cavity
pulsed particle
modulated beam
wave frequency
rate pulse
/315/327/331/