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X-ray position detector and implementation in a mirror pointing servo system

United States Patent

April 5, 2016
View the Complete Patent at the US Patent & Trademark Office
SLAC National Accelerator Laboratory - Visit the Technology Transfer Website
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.
Rabedeau; Thomas A. (San Jose, CA), Van Campen; Douglas G. (Milpitas, CA), Stefan; Peter M. (Sunnyvale, CA)
The Board of Trustees of the Leland Stanford Junior University (Palo Alto, CA)
14/ 203,294
March 10, 2014
STATEMENT OF GOVERNMENT SPONSORED SUPPORT This invention was made with Government support under grant (or contract) no. DE-AC02-76-SF00515 awarded by the Department Of Energy. The Government has certain rights in this invention.