Characterization of a quadrant diamond transmission X-ray detector including a precise determination of the mean electron–hole pair creation energy
At a Glance
Section titled “At a Glance”| Metadata | Details |
|---|---|
| Publication Date | 2018-02-20 |
| Journal | Journal of Synchrotron Radiation |
| Authors | Jeffrey W. Keister, Levent Cibik, Swenja Schreiber, Michael Krumrey |
| Institutions | Brookhaven National Laboratory, Physikalisch-Technische Bundesanstalt |
| Citations | 8 |
Abstract
Section titled “Abstract”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%. The linearity and X-ray scattering properties of the device are also described.