Apparatus and method for monitoring the intensities of charged particle beams

Patent · Tue Nov 02 00:00:00 EST 1982

OSTI ID:864381

Varma, Matesh N ^[1]; Baum, John W ^[2]

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1. Mt. Sinai, NY
2. Patchogue, NY

Charged particle beam monitoring means (40) are disposed in the path of a charged particle beam (44) in an experimental device (10). The monitoring means comprise a beam monitoring component (42) which is operable to prevent passage of a portion of beam (44), while concomitantly permitting passage of another portion thereof (46) for incidence in an experimental chamber (18), and providing a signal (I.sub.m) indicative of the intensity of the beam portion which is not passed. Calibration means (36) are disposed in the experimental chamber in the path of the said another beam portion and are operable to provide a signal (I.sub.f) indicative of the intensity thereof. Means (41 and 43) are provided to determine the ratio (R) between said signals whereby, after suitable calibration, the calibration means may be removed from the experimental chamber and the intensity of the said another beam portion determined by monitoring of the monitoring means signal, per se.

• Research Organization: Associated Universities, Inc., Upton, NY (United States)
• DOE Contract Number: AC02-76CH00016
• Assignee: United States of America as represented by United States (Washington, DC)
• Patent Number(s): US 4357536
• Application Number: 06/225,492
• OSTI ID: 864381
• Country of Publication: United States
• Language: English

Related Subjects

apparatus
method
monitoring
intensities
charged
particle
beams
beam
means
40
disposed
path
44
experimental
device
10
comprise
component
42
operable
prevent
passage
portion
concomitantly
permitting
46
incidence
chamber
18
providing
signal
indicative
intensity
passed
calibration
36
provide
41
43
provided
determine
ratio
signals
whereby
suitable
removed
determined
beam monitoring
particle beam
charged particle
particle beams
means comprise
permitting passage
monitoring means
beam monitor
/250/