Physics
Scientific paper
Aug 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005spie.5922..165m&link_type=abstract
Hard X-Ray and Gamma-Ray Detector Physics VII. Edited by James, Ralph B.; Franks, Larry A.; Burger, Arnold. Proceedings of the
Physics
Scientific paper
We report on a new photon-counting detector possessing unprecedented spatial resolution, moderate spectral resolution and high background-rejection capability for 0.1-100 keV X-rays. It consists of an X-ray charge-coupled device (CCD) and scintillator. The scintillator is directly deposited on the back surface of the X-ray CCD. Low-energy X-rays below 10 keV can be directly detected in the CCD. The majority of hard X-rays above 10 keV pass through the CCD but can be detected in the scintillator, generating visible light photons there. Since CCDs have a moderate detection effciency for visible light photons, they can be absorbed by the CCD. We evaluated the spectroscopic performance for hard X-rays at the synchrotron facility, SPring-8, and found a good linear relationship between the incident X-ray energy and the pulse height up to 80 keV. The on-axis image of the hard X-ray telescope, supermirror, was measured by our device at 40 keV. A sharp core and the wing structure can be clearly imaged and high imaging capability of the SD-CCD can be demonstrated.
Anabuki Naohisa
Miyaguchi Kazuhisa
Miyata Emi
Miyauchi Tomofumi
Mukai Kazuhiko
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