Design and Characterization of the ePix10k prototype: a High Dynamic Range integrating pixel ASIC for LCLS detectors.

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作者
Caragiulo, P. [1 ]
Dragone, A. [1 ]
Markovic, B. [1 ]
Herbst, R. [1 ]
Nishimura, K. [1 ]
Reese, B. [1 ]
Herrmann, S. [1 ]
Hart, P. [1 ]
Blaj, G. [1 ]
Segal, J. [1 ]
Tomada, A. [1 ]
Hasi, J. [1 ]
Carini, G. [1 ]
Kenney, C. [1 ]
Haller, G. [1 ]
机构
[1] SLAC Natl Accelerator Lab, Res Engn Div, Menlo Pk, CA 94025 USA
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中图分类号
TL [原子能技术]; O571 [原子核物理学];
学科分类号
0827 ; 082701 ;
摘要
ePix10k is a 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. The ASIC is optimized for high dynamic range application requiring high spatial resolution and fast frame rates. 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 ePix10k variant has 100umx100um pixels arranged in a 176x192 matrix, a resolution of 140e- r.m.s. and a signal range of 3.5pC (10k photons at 8keV). In its final version it will be able to sustain a frame rate of 2kHz. A first prototype has been fabricated and characterized. In this paper the ASIC performance in terms of noise, linearity, uniformity and cross-talk are presented, together with preliminary measurements with bump bonded sensors.
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