18 July 2000 Absolute calibration of ACIS x-ray CCDs using calculable undispersed synchrotron radiation
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Abstract
We have performed a series of measurements with the Physikalisch-Technische Bundesanstalt beamline of the electron storage ring BESSY 1 which provide the basis for the absolute calibration of the Advanced CCD Imaging Spectrometer (ACIS). ACIS is a prime focal plane instrument aboard the recently-launched Chandra X-ray Observatory. We have achieved an absolute detection efficiency knowledge accurate to better than 5% over the 0.3 - 4 keV band. We describe our measurement and analysis techniques, including our detector response modeling and pileup corrections. We summarize a variety of external and internal consistency checks which provide the basis for our error estimates. We discuss the factors limiting the accuracy of our measurements.
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Mark W. Bautz, Mark W. Bautz, Michael J. Pivovaroff, Michael J. Pivovaroff, Steven E. Kissel, Steven E. Kissel, Gregory Y. Prigozhin, Gregory Y. Prigozhin, Takashi Isobe, Takashi Isobe, Stephen E. Jones, Stephen E. Jones, George R. Ricker, George R. Ricker, R. Thornagel, R. Thornagel, S. Kraft, S. Kraft, Frank Scholze, Frank Scholze, Gerhard Ulm, Gerhard Ulm, } "Absolute calibration of ACIS x-ray CCDs using calculable undispersed synchrotron radiation", Proc. SPIE 4012, X-Ray Optics, Instruments, and Missions III, (18 July 2000); doi: 10.1117/12.391582; https://doi.org/10.1117/12.391582
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