CUBIC: Preflight Calibration Status

CUBIC: Preflight Calibration Status

CUBIC: Preflight Calibration Status
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Contents

Warp to the following subsections
  1. Abstract.
  2. Introduction.
  3. CCD Design.
  4. CCD Performance.
  5. Calibration.
  6. Future Work.
  7. Acknowledgements.
  8. References.

Mark A. Skinner, David N. Burrows, Gordon P. Garmire, Jeffrey A. Mendenhall

Department of Astronomy and Astrophysics
Penn State University
525 Davey Laboratory, University Park PA 16802
Phone: (814) 865-0418
FAX: (814) 863-3399

David H. Lumb
Astrophysics Division ESTEC
Keplerlaan 1, Postbus 299, 2200 AG Noordwijk, The Netherlands
Phone: (011) 31 71 65 4446

Andrew D. Holland
X-ray Astronomy Group, Physics Department, Leicester University, Leicester, U.K. LE1 7RH
Phone: (011) 44 116 252 3501

Peter Pool EEV Ltd., Chelmsford, Essex, U.K. CM1 2QU
Phone: (011) 44 1245 453570

ABSTRACT

CUBIC, the Cosmic Unresolved X-ray Background Instrument Using CCDs, is instrumented to make moderate resolution X-ray spectral measurements of diffuse targets at spatial scales of a few degrees. While the energy range is nominally 200 eV-10 keV, the CCDs have been designed to maximize the soft X-ray performance by using novel structures. A two part aperture increases the area-solid angle product above 1 keV to maximize sensitivity to the cosmic component of the diffuse X-ray background.

Here we report preliminary results of our preflight laboratory calibrations performed at Penn State of the dark current, readnoise, nonlinearity, charge transfer efficiency, energy resolution, and quantum efficiency of the two flight CCDs. We also discuss calibration of the detector field of view and the preliminary area-solid angle product of the instrument.

KEYWORDS: Charged Coupled Device, Absolute Quantum Efficiency, X-ray Astronomy, X-ray Background, Calibration

Back, Introduction.

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