American Science and Engineering, Inc.

Varian Semiconductor Equipment Associates, Inc.

Rajen Sud

Martin Rommel

Anatoli Arodzero

Lee Grodzins

Peter John Rothschild

Jeffrey R Schubert

Joseph Callerame

Dan-Cristian Dinca

Jeffrey M Denker

Thomas A Schaefer

Aaron Judy Couture

Aleksandr Saverskiy

Jonathan Edward Everett

Dan-Christian Dinca

Michael Fiorito

Peter Rothschild

Jeffrey Schubert

Methods for discriminating among x-ray beams of distinct energy content. A first volume of scintillation medium converts energy of incident penetrating radiation into scintillation light which is extracted from a scintillation light extraction region by a plurality of optical waveguides that convert the scintillation light to light of a longer wavelength. An x-ray beam initially incident upon the first volume of scintillation medium and traversing the first volume is then incident on a second volume of scintillation medium. The first and second scintillation media may be separated by an absorber or one or more further volumes of scintillation medium, and may also have differential spectral sensitivities. Scintillation light from the first and second scintillation volumes is detected in respective detectors and processed to yield a measure of respective low energy and high-energy components of the incident x-ray beam.

Hand-held X-ray detection system using wavelength-shifting fiber-coupled scintillation detectors

Spectral discrimination using wavelength-shifting fiber-coupled scintillation detectors

A detector and methods for inspecting material on the basis of scintillator coupled by wavelength-shifting optical fiber to one or more photo-detectors, with a temporal integration of the photo-detector signal. An unpixelated volume of scintillation medium converts energy of incident penetrating radiation into scintillation light which is extracted from a scintillation light extraction region by a plurality of optical waveguides. This geometry provides for efficient and compact detectors, enabling hitherto unattainable geometries for backscatter detection and for energy discrimination of incident radiation. Additional energy-resolving transmission configurations are enabled as are skew- and misalignment compensation.

X-ray inspection using wavelength-shifting fiber-coupled scintillation detectors

Methods and systems for x-ray inspection of an object using pulses whose spectral composition varies during the course of each pulse. A temporal sequence of pulses of penetrating radiation is generated such that the spectral content of each pulse evolves with time. The pulses are formed into a beam that is scanned across the object and detected after traversing the object. The detector signal is processed to derive at least one material characteristic of the object, such as effective atomic number, on the basis of temporal evolution of the detector signal during the course each pulse of the sequence of pulses. The time intervals may be predetermined, or else adapted based on features of the detected signal.

System and methods for intrapulse multi-energy and adaptive multi-energy X-ray cargo inspection

An ion implanter has an elongated evacuated chamber having a distal end along the path of travel of an ion beam. A planar multilayer printed circuit board (PCB) is located at the distal end of the chamber. The PCB has a first portion sealingly covering the distal end of the chamber and a second portion that extends outside the evacuated chamber, for example in the upward direction. An array of Faraday cups are arranged on a proximal surface of the first portion of the PCB within the chamber, and one or more multi-contact connectors (such as D-type connectors) are located on the second portion of the PCB outside the chamber. The individual contacts of the connector(s) are connected to respective Faraday cups by circuit traces of the PCB.

Ion implanter with vacuum-maintaining circuit board providing connections to internal faraday cups

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Burlington, MA, United States of America

Rajen Sud