X-Ray Position Detector and Implementation in a Mirror Pointing Servo System

摘要

An X-ray beam position and stability detector is provided having a first metal blade collinear with a second metal blade, where an edge of the first metal blade is opposite an edge of the second metal blade, where the first metal blade edge and the second metal blade edge are disposed along a centerline with respect to each other, where the metal blades are capable of photoelectron emission when exposed to an x-ray beam, a metal coating on the metal blades that is capable of enhancing the photoelectron emission, or suppressing energy-resonant contaminants, or enhancing the photoelectron emission and suppressing energy-resonant contaminants, a background shielding element having an electrode capable of suppressing photoelectron emission from spurious x-rays not contained in an x-ray beam of interest, and a photoelectron emission detector having an amplifier capable of detecting the photoelectron emission as a current signal.

主权项

1. An X-ray beam position and stability detector, comprising:
a. a first metal blade and a second metal blade, wherein said first metal blade is collinear with said second metal blade, wherein an edge of said first metal blade is opposite an edge of said second metal blade, wherein said first metal blade edge and said second metal blade edge are disposed along a centerline with respect to each other, wherein said metal blades are capable of photoelectron emission when exposed to an x-ray beam; b. a metal coating on said metal blades, wherein said metal coating is capable of i) enhancing said photoelectron emission, or ii) suppressing energy-resonant contaminants, or iii) enhancing said photoelectron emission and suppressing energy-resonant contaminants; c. a background shielding element, wherein said background shielding element comprises an electrode capable of suppressing photoelectron emission from spurious x-rays not contained in an x-ray beam of interest; and d. a photoelectron emission detector operated by an appropriately programmed computer, wherein said photoelectron emission detector comprises an amplifier, wherein said amplifier is capable of detecting said photoelectron emission as a current signal.