Development of a fast pixel array detector for use in microsecond time-resolved x-ray diffraction

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A large-area pixel x-ray detector is being developed to collect eight successive frames of wide dynamic range two-dimensional images at 200kHz rates. Such a detector, in conjunction with a synchrotron radiation x-ray source, will enable time-resolved x-ray studies of proteins and other materials on time scales which have previously been inaccessible. The detector will consist of an array of fully-depleted 150 micron square diodes connected to a CMOS integrated electronics layer with solder bump-bonding. During each framing period, the current resulting from the x-rays stopped in the diodes is integrated in the electronics layer, and then stored in one of ... continued below

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Barna, S.L.; Gruner, S.M. & Shepherd, J.A. August 1, 1995.

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A large-area pixel x-ray detector is being developed to collect eight successive frames of wide dynamic range two-dimensional images at 200kHz rates. Such a detector, in conjunction with a synchrotron radiation x-ray source, will enable time-resolved x-ray studies of proteins and other materials on time scales which have previously been inaccessible. The detector will consist of an array of fully-depleted 150 micron square diodes connected to a CMOS integrated electronics layer with solder bump-bonding. During each framing period, the current resulting from the x-rays stopped in the diodes is integrated in the electronics layer, and then stored in one of eight storage capacitors underneath the pixel. After the last frame, the capacitors are read out at standard data transmission rates. The detector has been designed for a well-depth of at least 10,000 x-rays (at 20keV), and a noise level of one x-ray. Ultimately, the authors intend to construct a detector with over one million pixels (1024 by 1024). They present the results of their development effort and various features of the design. The electronics design is discussed, with special attention to the performance requirements. The choice and design of the detective diodes, as they relate to x-ray stopping power and charge collection, are presented. An analysis of various methods of bump bonding is also presented. Finally, the authors discuss the possible need for a radiation-blocking layer, to be placed between the electronics and the detective layer, and various methods they have pursued in the construction of such a layer.

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10 p.

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INIS; OSTI as DE95015645

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  • 2. international conference on millimeter- and submillimeter-waves and applications, San Diego, CA (United States), 9-14 Jul 1995

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  • Other: DE95015645
  • Report No.: ANL/XFD/CP--87073
  • Report No.: CONF-950751--1
  • Grant Number: W-31109-ENG-38
  • Office of Scientific & Technical Information Report Number: 100121
  • Archival Resource Key: ark:/67531/metadc625416

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  • August 1, 1995

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  • June 16, 2015, 7:43 a.m.

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  • Dec. 14, 2015, 12:41 p.m.

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Barna, S.L.; Gruner, S.M. & Shepherd, J.A. Development of a fast pixel array detector for use in microsecond time-resolved x-ray diffraction, article, August 1, 1995; Illinois. (digital.library.unt.edu/ark:/67531/metadc625416/: accessed December 14, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.