Design and characterization of the ePix100a: A low noise integrating pixel ASIC for LCLS detectors

2014 IEEE Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC) Pub Date : 2014-11-01 DOI:10.1109/NSSMIC.2014.7431230

B. Markovic, A. Dragone, P. Caragiulo, R. Herbst, K. Nishimura, B. Reese, S. Herrmann, P. Hart, G. Blaj, J. Segal, A. Tomada, J. Hasi, G. Carini, C. Kenney, G. Haller

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引用次数: 10

Abstract

ePix100 is the first variant of a novel class of integrating pixel ASICs architectures optimized for the processing of signals in second generation LINAC Coherent Light Source (LCLS) X-Ray cameras. ePix ASICs are based on a common platform composed of a random access analog matrix of pixel with global shutter, fast parallel column readout, and dedicated sigma-delta analog to digital converters per column. The ePix100 variant is optimized for low noise application requiring high spatial resolution and fast frame rates. The ASIC has pixels of 50×50 μm2 size arranged in a 352×384 array, a resolution of 50e- r.m.s., and a signal range of 35fC (100 photons at 8keV). In its final version it will be able to sustain a frame rate of 1 kHz. Currently a full-size analog version, ePix100a, has been fabricated in TSMC CMOS 0.25 μm technology. The ePix100a has been fully characterized and results are here reported.

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用于LCLS检测器的低噪声集成像素专用集成电路ePix100a的设计与特性

ePix100是针对第二代LINAC相干光源(LCLS) x射线相机的信号处理优化的新型集成像素asic架构的第一种变体。ePix asic基于一个通用平台，该平台由具有全局快门的随机访问模拟矩阵像素、快速并行列读出和每个列专用的sigma-delta模拟到数字转换器组成。ePix100变体针对需要高空间分辨率和快速帧率的低噪声应用进行了优化。ASIC的像素尺寸为50×50 μm2，排列在352×384阵列中，分辨率为50e- rms，信号范围为35fC (8keV时100个光子)。在最终版本中，它将能够维持1千赫的帧率。目前，全尺寸模拟版本ePix100a已采用台积电CMOS 0.25 μm技术制造。ePix100a已经进行了充分的表征，并在这里报告了结果。

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2014 IEEE Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC)

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