Radiant energy – With charged particle beam deflection or focussing – With detector
Patent
1994-11-28
1995-12-12
Berman, Jack I.
Radiant energy
With charged particle beam deflection or focussing
With detector
324 713, H01J 4718
Patent
active
054752280
ABSTRACT:
An apparatus for monitoring an electrically charged particle pulse includes at least one coil defining an opening therethrough. The coil generates a bipolar signal responsive to the electrically charged particle pulse passing through the opening, and the bipolar signal comprises a first portion having a first polarity and a second portion having a second polarity. Unipolar blocking diode connected to the coil passes the first portion of the bipolar signal having a first polarity and blocks the second portion of the bipolar signal having the second polarity. Monitoring Device connected to the unipolar blocking diode generates an output signal representative of a predetermined characteristic of the particle based upon the first portion of the bipolar signal which is passed by the unipolar blocking diode. In a preferred embodiment, the coil has a toroidal shape and comprises a plurality of windings electrically connected in parallel, and each of these windings comprises a plurality of conductive loops. The apparatus may also comprise a series of coils arranged so as to define a predetermined path for passage of the electrically charged particle through each respective opening of each respective coil.
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Berman Jack I.
Nguyen Kiet T.
University of Puerto Rico
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