Four cavity efficiency enhanced magnetically insulated line oscillator

Patent · Tue Apr 21 04:00:00 EDT 1998

OSTI ID:871488

Lemke, Raymond W ^[1]; Clark, Miles C ^[1]; Calico, Steve E ^[1]

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1. Albuquerque, NM

A four cavity, efficient magnetically insulated line oscillator (C4-E MILO) having seven vanes and six cavities formed within a tube-like structure surrounding a cathode. The C4-E MILO has a primary slow wave structure which is comprised of four vanes and the four cavities located near a microwave exit end of the tube-like structure. The primary slow wave structure is the four cavity (C4) portion of the magnetically insulated line oscillator (MILO). An RF choke is provided which is comprised of three of the vanes and two of the cavities. The RF choke is located near a pulsed power source portion of the tube-like structure surrounding the cathode. The RF choke increases feedback in the primary slow wave structure, prevents microwaves generated in the primary slow wave structure from propagating towards the pulsed power source and modifies downstream electron current so as to enhance microwave power generation. A beam dump/extractor is located at the exit end of the oscillator tube for extracting microwave power from the oscillator, and in conjunction with an RF extractor vane, which comprises the fourth vane of the primary slow wave structure (nearest the exit) having a larger gap radius than the other vanes of the primary SWS, comprises an RF extractor. Uninsulated electron flow is returned downstream towards the exit along an anode/beam dump region located between the beam dump/extractor and the exit where the RF is radiated at said RF extractor vane located near the exit and the uninsulated electron flow is disposed at the beam dump/extractor.

• Research Organization: Sandia National Laboratories (SNL-NM), Albuquerque, NM
• Sponsoring Organization: United States Department of Energy
• DOE Contract Number: AC04-94AL85000
• Assignee: United States of America as represented by United States (Washington, DC)
• Patent Number(s): US 5742209
• Application Number: 08/677,542
• OSTI ID: 871488
• Country of Publication: United States
• Language: English

Related Subjects

/331/315/
anode
beam
beam dump
c4
c4-e
c4-e milo
cathode
cavities
cavities formed
cavity
choke
comprised
comprises
conjunction
current
disposed
downstream
dump
efficiency
efficient
electron
electron current
electron flow
enhance
enhanced
enhanced magnetic
exit
extracting
extractor
feedback
flow
formed
fourth
gap
generated
generation
increases
insulated
insulated line
larger
line
line oscillator
located
located near
magnetically
magnetically insulated
microwave
microwave power
microwaves
milo
modifies
near
nearest
oscillator
portion
power
power generation
power source
prevents
primary
propagating
provided
pulsed
pulsed power
radiated
radius
region
returned
rf
seven
six
slow
slow wave
source
structure
structure surrounding
surrounding
sws
towards
tube
tube-like
tube-like structure
uninsulated
vane
vanes
wave
wave structure
waves generated