Apparatus for detecting position of charged particle

Details Apparatus for detecting position of charged particle Apparatus for detecting position of charged particle

1990-06-05

1991-10-15

Wieder, Kenneth A.

Electricity: measuring and testing

Determining nonelectric properties by measuring electric...

Beam of atomic particles

324452, 324457, 324 711, G01N 2700

Patent

active

050577662

ABSTRACT:
An apparatus for detecting the position of a charged particle in a duct pipe has a plurality of electrodes arranged in the duct pipe. Detection signals obtained in the electrodes are phase-delayed by predetermined amounts and then added to form an integral detection signal. The integral detection signal is input to a circuit which determines waveforms representative of the passage of the charged particle: namely, the D.C. component of the detection signal, fundamental wave component and a phase-shifted fundamental wave component. The position of the charged particle are determined from these components. A part of each electrode is formed of a dielectric member. Each electrode and an associated connector are covered by a double-shield structure with inner and outer shields, the electrode, the connector and the inner shield being electrically insulated from the duct pipe.

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Bergere et al, "Linac Beam Position Monitor", The Review of Scientific Instruments, vol. 33, No. 12 (12/62) pp. 1441-1449.

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