التفاصيل البيبلوغرافية
| العنوان: |
Caliste 64, an Innovative CdTe Hard X-Ray Micro-Camera. |
| المؤلفون: |
Meuris, A., Limousin, O., Lugiez, F., Gevin, O., Pinsard, F., Le Mer, I., Delagnes, E., Vassal, M. C., Soufflet, F., Bocage, R. |
| المصدر: |
IEEE Transactions on Nuclear Science; Apr2008, Vol. 55 Issue 2, p778-784, 7p, 3 Diagrams, 12 Graphs |
| مصطلحات موضوعية: |
CADMIUM, TELLURIUM, X-rays, CAMERAS, PIXELS, PHOTONS, SPECTRUM analysis, ELECTRONICS, ELECTRONS |
| مستخلص: |
A prototype 64 pixel miniature camera has been designed and tested for the Simbol-X hard X-ray observatory to be flown on the joint CNES-ASI space mission in 2014. This device is called Caliste 64. It is a high performance spectro-imager with event time-tagging capability, able to detect photons between 2 keV and 250 keV. Caliste 64 is the assembly of a 1 or 2 mm thick CdTe detector mounted on top of a readout module. CdTe detectors equipped with Aluminum Schottky barrier contacts are used because of their very low dark current and excellent spectroscopic performance. Front-end electronics is a stack of four IDeF-X Vii ASICs, arranged perpendicular to the detection plane, to read out each pixel independently. The whole camera fits in a 10 × 10 × 20 mm3 volume and is juxtaposable on its four sides. This allows the device to be used as an elementary unit in a larger array of Caliste 64 cameras. Noise performance resulted in an ENC better than 60 electrons rms in average. The first prototype camera is tested at -10° C with a bias of -400 V. The spectrum summed across the 64 pixels results in a resolution of 697 eV FWHM at 13.9 keV and 808 eV FWHM at 59.54 keV. [ABSTRACT FROM AUTHOR] |
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