Data Acquisition and Experiment Control System for a Large Area Neutron Detector PDF Download
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Languages : en
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The system consists of a data input subsystem, a display subsystem and a spectrometer control subsystem. The data input subsystem consists of a two-dimensional analog-to-digital converter with the analog section remote from the rest of the system. The analog-to-digital converter clock runs at 100 MHz. There can be up to 1024 channels in each dimension for a maximum array size of approx. 1 million words. Arrays of this size may be easily handled by a multiport memory with 6.71 x 107 words of address space. The read/increment/write time for data in this array is 2.5 .mu.sec per event. The display and neutron spectrometer subsystem are also briefly described.
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Languages : en
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The system consists of a data input subsystem, a display subsystem and a spectrometer control subsystem. The data input subsystem consists of a two-dimensional analog-to-digital converter with the analog section remote from the rest of the system. The analog-to-digital converter clock runs at 100 MHz. There can be up to 1024 channels in each dimension for a maximum array size of approx. 1 million words. Arrays of this size may be easily handled by a multiport memory with 6.71 x 107 words of address space. The read/increment/write time for data in this array is 2.5 .mu.sec per event. The display and neutron spectrometer subsystem are also briefly described.
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Category : Power resources
Languages : en
Pages : 806
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Semiannual, with semiannual and annual indexes. References to all scientific and technical literature coming from DOE, its laboratories, energy centers, and contractors. Includes all works deriving from DOE, other related government-sponsored information, and foreign nonnuclear information. Arranged under 39 categories, e.g., Biomedical sciences, basic studies; Biomedical sciences, applied studies; Health and safety; and Fusion energy. Entry gives bibliographical information and abstract. Corporate, author, subject, report number indexes.
Author: Hildebram Diaz
Publisher:
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Category : Neutrons
Languages : en
Pages : 94
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Author: Ghulam Jaffar
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Category :
Languages : en
Pages :
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The motivation of this project is to explore the use of digital pulse processing techniques for fast neutron and gamma ray detection in liquid scintillator. Digital techniques can simplify the performance of scintillation detectors where both timing information and pulse-height spectroscopy are required. Software based pulse shape discrimination (PSD) and timing algorithms have been developed that can be used in various neutron experiments in the time-of-flight (TOF) mode over a wide neutron energy range. These algorithms can be applied to current pulses produced directly from the photomultiplier tube and thus removing the need for processing electronics, which are typically required in an analog pulse shape system. The digital techniques developed in this study were applied to a large volume 'Demon' liquid scintillator detector. The Demon detector has a high intrinsic efficiency over a large energy range that is 50% for neutrons of 10 MeV and about 50% for y-rays of 1275 keV. During the normal Demon experiments the energy of fast neutron is measured using analog TOF methods.
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Category : Neutron counters
Languages : en
Pages : 150
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This thesis presents the design of multiple analog and digital blocks required to implement a desired solid-state data acquisition system for the High Efficiency Neutron Detector Array (HENDA) project under the Spallation Neutron Source (SNS) at Oak Ridge National Laboratory (ORNL). This system encloses and is an extension of prior work described in [1] and [2]. The first prototype chip, named Patara, contained a charge sensitive front-end amplifier [2], and a semi-Gaussian shaper with baseline restore circuitry [1]. Patara III, described in this thesis, involved the addition of the following system components; two comparators, a selectable synchronous/asynchronous digital backend, priority and binary encoders, nine LVDS drivers/receivers, three 8-bit current driven calibration DAC's, two BGR's, and a 99-bit serial shift register with channel test-mode circuitry. The design approach for all major blocks will be discussed along with overall system simulations. In addition, the testing procedure and associated measured results will be summarized illustrating a successful system design. This ASIC was fabricated using the Taiwan Semiconductor Manufacturing Company (TSMC) 0.35-[mu]m process available through MOSIS.
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Category :
Languages : en
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The configuration for a new data acquisition system for the Weapons Neutron Research Facility at the Los Alamos National Laboratory is introduced. The system utilizes a FASTBUS front-end for real-time data collection and DEC computers for the experiment control and analysis. A local area network is used extensively within the overall system. 6 refs., 3 figs.
Author: Klaus-Dieter Liss
Publisher: MDPI
ISBN: 3038974838
Category : Chemistry
Languages : en
Pages : 163
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This book is a printed edition of the Special Issue "Facilities" that was published in QuBS
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Category : Aeronautics
Languages : en
Pages : 892
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Category : Nuclear energy
Languages : en
Pages : 1146
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Author:
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Category : Nuclear energy
Languages : en
Pages : 1640
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