Economical x-ray area detector for focusing and alignment purposes

Abstract

We developed a two-dimensional x-ray detector for x-ray beam profile analysis. The detector was built from commercially available parts, which included a low-cost 8-bit CCD camera, and a zoom lens coupled to a close-up lens, to which was attached a fiber-optic faceplate coated with (Gd2O2S:Tb) phosphor to a surface density of (10 mg/cm2). Testing of the detector unit has shown good linearity of response to the incident x-ray intensity (within ±4%), and good spatial linearity. The advantages of this detector lie mainly in its compactness, its ease of maneuverability, and the fact that it can be remotely controlled by a PC/AT computer at a reasonable cost (∼$1000 without the PC/AT).

Development of a Fast and High Resolution X-Ray Imaging Sensor for In-Line Inspection of Tape Substrate

“…With exception to X-ray image intensifiers, most detectors detect X-rays by converting the X-ray to light using a phosphor/scintillator and then transmitting the light to an image sensor or by directly converting the X-ray to an electrical signal with a semiconductor detector. Indirect methods include scintillator coated flat panels such as Thin Film Transistor (TFT) (Rahn et al 1999;Granfors 1999) or CMOS (Abdalla et al 2001;Fujita et al 2003) and Phosphor-CCD (Charge Coupled Device) X-ray camera (Allinson 1994;Chu et al 1992;Nagarkar et al 1996). Direct detection includes amorphous Selenium deposited on TFT which collects electron-hole pairs dislodged by the incoming X-ray (Andre et al 1998;Zhao and Rowlands 1995).…”

[Phase transition in polymer blends and structure of ionomers and copolymers]

“…In addition to the Braun linear position sensitive detector which belongs to the SUNY Beamline, we have adapted a linear photodiode array detector [4] and CCD cameras as an area x-ray detector [6,21,25] for intense synchrotron x-rays. The structures of supramolecules can best be investigated by a combination of light and x-ray scattering whereby one can determine the particle size, the core dimension, and the shape of supramolecules [5]."…”