System for tomographic determination of the power distribution in electron beams
- Pleasanton, CA
- Livermore, CA
A tomographic technique for measuring the current density distribution in electron beams using electron beam profile data acquired from a modified Faraday cup to create an image of the current density in high and low power beams. The modified Faraday cup includes a narrow slit and is rotated by a stepper motor and can be moved in the x, y and z directions. The beam is swept across the slit perpendicular thereto and controlled by deflection coils, and the slit rotated such that waveforms are taken every few degrees form 0.degree. to 360.degree. and the waveforms are recorded by a digitizing storage oscilloscope. Two-dimensional and three-dimensional images of the current density distribution in the beam can be reconstructed by computer tomography from this information, providing quantitative information about the beam focus and alignment.
- Research Organization:
- Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
- DOE Contract Number:
- W-7405-ENG-48
- Assignee:
- Regents of University of California (Oakland, CA)
- Patent Number(s):
- US 5468966
- OSTI ID:
- 870171
- Country of Publication:
- United States
- Language:
- English
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System for tomographic determination of the power distribution in electron beams
System for tomographic determination of the power distribution in electron beams
Related Subjects
determination
power
distribution
electron
beams
technique
measuring
current
density
beam
profile
data
acquired
modified
faraday
cup
create
image
narrow
slit
rotated
stepper
motor
moved
z
directions
swept
perpendicular
thereto
controlled
deflection
coils
waveforms
degrees
form
degree
360
recorded
digitizing
storage
oscilloscope
two-dimensional
three-dimensional
images
reconstructed
computer
tomography
information
providing
quantitative
focus
alignment
perpendicular thereto
profile data
data acquired
quantitative information
tomographic technique
three-dimensional images
stepper motor
current density
electron beam
electron beams
faraday cup
density distribution
power distribution
beam profile
modified faraday
z directions
storage oscilloscope
providing quantitative
slit perpendicular
slit rotated
computer tomography
narrow slit
deflection coils
tomographic determination
beam focus
power beams
dimensional image
degrees form
digitizing storage
deflection coil
three-dimensional image
z direction
dimensional images
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