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This content will become publicly available on February 20, 2019

Title: Characterization of a quadrant diamond transmission X-ray detector including a precise determination of the mean electron–hole pair creation energy

Precise monitoring of the incoming photon flux is crucial for many experiments using synchrotron radiation. For photon energies above a few keV, thin semiconductor photodiodes can be operated in transmission for this purpose. Diamond is a particularly attractive material as a result of its low absorption. The responsivity of a state-of-the art diamond quadrant transmission detector has been determined, with relative uncertainties below 1% by direct calibration against an electrical substitution radiometer. From these data and the measured transmittance, the thickness of the involved layers as well as the mean electron–hole pair creation energy were determined, the latter with an unprecedented relative uncertainty of 1%. Lastly, the linearity and X-ray scattering properties of the device are also described.
ORCiD logo [1] ;  [2] ;  [2] ; ORCiD logo [2]
  1. Brookhaven National Lab. (BNL), Upton, NY (United States). National Synchrotron Light Source II (NSLS-II)
  2. Physikalisch-Technische Bundesanstalt (PTB), Berlin (Germany)
Publication Date:
Report Number(s):
Journal ID: ISSN 1600-5775; JSYRES
Grant/Contract Number:
Accepted Manuscript
Journal Name:
Journal of Synchrotron Radiation (Online)
Additional Journal Information:
Journal Name: Journal of Synchrotron Radiation (Online); Journal Volume: 25; Journal Issue: 2; Journal ID: ISSN 1600-5775
International Union of Crystallography
Research Org:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Country of Publication:
United States
47 OTHER INSTRUMENTATION; X-ray; detectors; diamond; calibration; scattering; quadrant diamond transmission X-ray detector
OSTI Identifier: