کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9953883 | 1526221 | 2018 | 19 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
A fitting model of the pixel response to monochromatic X-rays in photon counting detectors
ترجمه فارسی عنوان
یک مدل مناسب از پاسخ پیکسل به اشعه مونو کروماتیک در آشکارساز شمارش فوتون
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کلمات کلیدی
آشکارسازهای اشعه ایکس، شمارش فوتون، مدل پاسخ پیکسل، اتصالات طیفی،
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
ابزار دقیق
چکیده انگلیسی
We present a simple fitting model for the pixel response to monochromatic X-rays in single photon counting pixelated detectors that takes into account the 2D effects of the charge sharing and of the electronic noise on the photon counting process. It is based only on geometrical and physical parameters such as the pixel size, the charge cloud size at the pixel depth and the total electronic noise of the front-end circuitry. The equations describing the pixel point spread function and the integral pulse height spectrum are derived preserving the genuine 2D nature of the charge collection process. The fitting performances of the model has been assessed on a set of experimental integral pulse height spectra measured with an IBEX photon counting ASIC bonded to a 450μm thick Silicon sensor with 75μmÃ75μm pixel size, irradiated with monochromatic X-rays in the energy range 6-12.4 keV, with excellent agreement between model and measurement. The actual contributions of the charge sharing and of the electronic noise are identified and estimated. As a possible consequence, the model can be used to predict precisely the behavior of photon counting detection systems as a function of the design parameters.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment - Volume 905, 11 October 2018, Pages 188-192
Journal: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment - Volume 905, 11 October 2018, Pages 188-192
نویسندگان
P. Zambon, V. Radicci, M. Rissi, C. Broennimann,