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Low-Noise Preamplifier Design Considerations for Large Area High Capacitance Solid-State Neutron Detectors.

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Title: Low-Noise Preamplifier Design Considerations for Large Area High Capacitance Solid-State Neutron Detectors.
Authors: English, Erik1, Weltz, Adam2, Dahal, Rajendra1, Lu, James J.-Q.1, Danon, Yaron2, Bhat, Ishwara B.1, Hella, Mona M.1
Source: IEEE Transactions on Nuclear Science. Feb2016 Part 2, Vol. 63 Issue 1b, p304-315. 12p.
Subjects: Signal-to-noise ratio, Preamplifiers, Electric capacity, Neutron counters, Signal processing
Abstract: In this paper, the design of a low noise charge sensitive preamplifier, suitable for high capacitance solid-state neutron detector arrays, is described. Noise considerations related to arraying multiple detectors in either series or parallel are also presented. Using the designed preamplifier, an energy resolution of 12 keV FWHM in Si is achieved with 1 nF equivalent detector capacitance and 10~\mu\S shaping time. Additionally, a novel preamplifier topology, which utilizes a capacitance canceling input stage, is presented. Detailed analysis of the capacitance cancelling stage is discussed with special consideration given to its use with a charge sensitive preamplifier. Up to a 15% decrease in noise is demonstrated using the capacitance cancelling technique. [ABSTRACT FROM AUTHOR]
Copyright of IEEE Transactions on Nuclear Science is the property of IEEE and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: In this paper, the design of a low noise charge sensitive preamplifier, suitable for high capacitance solid-state neutron detector arrays, is described. Noise considerations related to arraying multiple detectors in either series or parallel are also presented. Using the designed preamplifier, an energy resolution of 12 keV FWHM in Si is achieved with 1 nF equivalent detector capacitance and 10~\mu\S shaping time. Additionally, a novel preamplifier topology, which utilizes a capacitance canceling input stage, is presented. Detailed analysis of the capacitance cancelling stage is discussed with special consideration given to its use with a charge sensitive preamplifier. Up to a 15% decrease in noise is demonstrated using the capacitance cancelling technique. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of IEEE Transactions on Nuclear Science is the property of IEEE and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1109/TNS.2016.2516008
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        Text: English
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