Diamond X-ray photodiode for white and monochromatic SR beams

High-purity, single-crystal CVD diamond plates are screened for quality and instrumented into a sensor assembly for quantitative characterization of flux and position sensitivity. Initial investigations have yielded encouraging results and have led to further development. Several limiting complicati...

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Published inNuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment Vol. 649; no. 1; pp. 91 - 93
Main Authors Keister, Jeffrey W., Smedley, John, Muller, Erik M., Bohon, Jen, Héroux, Annie
Format Journal Article
LanguageEnglish
Published Netherlands Elsevier B.V 01.09.2011
Subjects
BEAM MONITORS
BEAM POSITION
BEAMS
Beams (radiation)
CHEMICAL VAPOR DEPOSITION
Detector
Detectors
Devices
Diamond
DIAMONDS
Diode
ELECTRODES
Electronics
Flux
High flux
INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
Linearity
MONOCHROMATIC RADIATION
MONOCRYSTALS
PHOTODIODES
PLATES
Position monitor
Responsivity
SENSITIVITY
SENSORS
Synchrotron
SYNCHROTRON RADIATION
TESTING
White beam
X-ray
X-rays
High flux
Detector
Diode
Responsivity
Diamond
Position monitor
X-ray
Synchrotron
White beam
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Summary:High-purity, single-crystal CVD diamond plates are screened for quality and instrumented into a sensor assembly for quantitative characterization of flux and position sensitivity. Initial investigations have yielded encouraging results and have led to further development. Several limiting complications are observed and discussed, as well as mitigations thereof. For example, diamond quality requirements for X-ray diodes include low nitrogen impurity and crystallographic defectivity. Thin electrode windows and electronic readout performance are ultimately also critical to device performance. Promising features observed so far from prototype devices include calculable responsivity, flux linearity, position sensitivity and timing performance. Recent results from testing in high-flux and high-speed applications are described.
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BNL-96570-2011-JA
DOE-OFFICE OF BIOLOGICAL & ENVIRONMENTAL RESEARCH
DE-AC02-98CH10886
smedley@bnl.gov, affiliation and postal address: Instrumentation Division, Brookhaven National Laboratory, Bldg. 535-B, Upton, NY 11973-5000 USA
emuller@bnl.gov, affiliation: Department of Physics and Astronomy, Stony Brook University, postal address: Brookhaven National Laboratory, Bldg. 535-B, Upton, NY 11973-5000 USA
heroux@bnl.gov, affiliation and postal address: Biology Department, Brookhaven National Laboratory, Bldg. 463, Upton, NY 11973-5000 USA
jbohon@bnl.gov, affiliation: Center for Synchrotron Biosciences, Case Western Reserve University, postal address: Brookhaven National Laboratory, Bldg. 725-X3B, Upton, NY 11973-5000 USA
ISSN:0168-9002
1872-9576
DOI:10.1016/j.nima.2010.11.135