Free electron laser

Patent · Mon Jan 01 00:00:00 EST 1990

OSTI ID:867614

Villa, Francesco ^[1]

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1. Alameda, CA

A high gain, single-pass free electron laser formed of a high brilliance electron injector source, a linear accelerator which imparts high energy to the electron beam, and an undulator capable of extremely high magnetic fields, yet with a very short period. The electron injector source is the first stage (gap) of the linear accelerator or a radial line transformer driven by fast circular switch. The linear accelerator is formed of a plurality of accelerating gaps arranged in series. These gaps are energized in sequence by releasing a single pulse of energy which propagates simultaneously along a plurality of transmission lines, each of which feeds the gaps. The transmission lines are graduated in length so that pulse power is present at each gap as the accelerated electrons pass therethrough. The transmission lines for each gap are open circuited at their ends. The undualtor has a structure similar to the accelerator, except that the transmission lines for each gap are substantially short circuited at their ends, thus converting the electric field into magnetic field. A small amount of resistance is retained in order to generate a small electric field for replenishing the electron bunch with the energy lost as it traverses through the undulator structure.

• Research Organization: SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
• DOE Contract Number: AC03-76SF00515
• Assignee: Harris Blake Corporation (Great Neck, NY)
• Patent Number(s): US 4972420
• OSTI ID: 867614
• Country of Publication: United States
• Language: English

Related Subjects

free
electron
laser
single-pass
formed
brilliance
injector
source
linear
accelerator
imparts
energy
beam
undulator
capable
extremely
magnetic
fields
period
stage
gap
radial
line
transformer
driven
fast
circular
switch
plurality
accelerating
gaps
arranged
series
energized
sequence
releasing
single
pulse
propagates
simultaneously
transmission
lines
feeds
graduated
length
power
accelerated
electrons
pass
therethrough
circuited
undualtor
structure
similar
substantially
converting
electric
field
amount
resistance
retained
generate
replenishing
bunch
lost
traverses
transmission lines
electric field
transmission line
magnetic field
electron beam
magnetic fields
electron laser
free electron
linear accelerator
pulse power
pass therethrough
single pulse
accelerating gaps
accelerating gap
electron bunch
electrons pass
accelerated electron
pass free
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