# IEEE Transactions on Nuclear Science

## Volume 57 Issue 3  Part 3 • June 2010

This issue contains several parts.Go to:  Part 1  | Part 2

## Filter Results

Displaying Results 1 - 25 of 31

Publication Year: 2010, Page(s):C1 - 1521
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• ### IEEE Transactions on Nuclear Science publication information

Publication Year: 2010, Page(s): C2
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• ### Upgrading of the EAST Distributed Synchronization and Timing System

Publication Year: 2010, Page(s):1522 - 1527
Cited by:  Papers (4)
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The present EAST Distributed Synchronization and Timing System (DSTS) provides synchronized sequential triggers and clocks for tokamak control and measurement. However, a more flexible and user-friendly DSTS is required to realize advanced plasma timing control. Central Timer Unit (CTU), Synchronized Local Timing Node (SLTN) and optical network composed a new DSTS. Based on embedded technology and... View full abstract»

• ### Unified Beam Control System of J-PARC Linac

Publication Year: 2010, Page(s):1528 - 1535
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A beam control system has been developed for the J-PARC linac to achieve strict design goals of beam performance and beam loss suppression in the high-intensity H- beams. An emerging concept of unified beam control has been adopted in the system, where a unified data source, standardized control units, a unified online model, and uniform high-level application frameworks have been desig... View full abstract»

• ### ASIC for High Rate 3D Position Sensitive Detectors

Publication Year: 2010, Page(s):1536 - 1542
Cited by:  Papers (18)
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We report on the development of an application specific integrated circuit (ASIC) for 3D position sensitive detectors (3D PSD). The ASIC is designed to operate with pixelated wide bandgap sensors like Cadmium-Zinc-Telluride (CZT), Mercuric Iodide (Hgl2) and Thallium Bromide (TIBr). It measures the amplitudes and timings associated with an ionizing event on 128 anodes, the anode grid, and the catho... View full abstract»

• ### Several Key Issues on Implementing Delay Line Based TDCs Using FPGAs

Publication Year: 2010, Page(s):1543 - 1548
Cited by:  Papers (61)
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This paper discusses implementation of the Wave Union TDC, a novel scheme of FPGA TDC to improve time measurement precision using multiple measurements, along with several other topics in FPGA delay line based TDCs. FPGA specific issues such as considerations on the delay line choice in different FPGA families and encoding logic are first examined. Next, common problems for both FPGA TDCs and ASIC... View full abstract»

• ### Development of an APD With Large Area and Thick Depletion Layer for Energetic Electron Measurements in Space

Publication Year: 2010, Page(s):1549 - 1555
Cited by:  Papers (2)
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We report the performance of an Avalanche Photodiode (APD) that has a large-area (1 cm2) and a thick depletion layer (~30 μm) in application to electron measurements. It is shown that the dead layer is sufficiently thin for the detection of electrons at energies less than 10 keV; the lowest measurable energy is ~5 keV. We also confirmed that the energy resolution is not significantly deteri... View full abstract»

• ### Sequential Probability Ratio Test Using Scaled Time-Intervals for Environmental Radiation Monitoring

Publication Year: 2010, Page(s):1556 - 1562
Cited by:  Papers (4)
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Sequential probability ratio test (SPRT) of scaled time-interval data (time to record N radiation pulses), SPRT_scaled, was evaluated against commonly used single-interval test (SIT) and SPRT with a fixed counting interval, SPRT_fixed, on experimental and simulated data. Experimental data were acquired with a DGF-4C (XIA, Inc) system in list mode. Simulated time-interval data were ob... View full abstract»

• ### Characterization of an In-Beam PET Prototype for Proton Therapy With Different Target Compositions

Publication Year: 2010, Page(s):1563 - 1569
Cited by:  Papers (8)
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At the University of Pisa, the DoPET (Dosimetry with a Positron Emission Tomograph) project has focused on the development and characterization of an ad hoc, scalable, dual-head PET prototype for in-beam treatment planning verification of the proton therapy. In this paper we report the first results obtained with our current prototype, consisting of two opposing lutetium yttrium orthosilica... View full abstract»

• ### Optimization of a LSO-Based Detector Module for Time-of-Flight PET

Publication Year: 2010, Page(s):1570 - 1576
Cited by:  Papers (25)
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We have explored methods for optimizing the timing resolution of an LSO-based detector module for a single-ring, “demonstration” time-of-flight PET camera. By maximizing the area that couples the scintillator to the PMT and minimizing the average path length that the scintillation photons travel, a single detector timing resolution of 218 ps fwhm is measured, which is considerably be... View full abstract»

• ### Power-Level Control of Nuclear Reactors Based on Feedback Dissipation and Backstepping

Publication Year: 2010, Page(s):1577 - 1588
Cited by:  Papers (11)
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Due to the existing serious climate and environment problems caused by burning fossil fuels, nuclear energy is now under rapid development. As a crucial technology in the field of nuclear energy, power-level control for nuclear power plants is significant for not only regular operating but also safety issues. A nonlinear controller based on feedback dissipation and backstepping (FDBC) is presented... View full abstract»

• ### Comparison Measurements of Silicon Carbide Temperature Monitors

Publication Year: 2010, Page(s):1589 - 1594
Cited by:  Papers (8)
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As part of a process initiated through the Advanced Test Reactor (ATR) National Scientific User Facility (NSUF) program to make Silicon Carbide (SiC) temperature monitors available for experiments, a capability was developed at the Idaho National Laboratory (INL) to complete post-irradiation evaluations of these monitors. INL selected the resistance measurement approach for detecting peak irradiat... View full abstract»

• ### Prediction of DNBR Using Fuzzy Support Vector Regression and Uncertainty Analysis

Publication Year: 2010, Page(s):1595 - 1601
Cited by:  Papers (7)
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It is very important for operators to be informed of the departure from nucleate boiling ratio (DNBR) to prevent the fuel cladding from melting and causing a boiling crisis. Artificial intelligence methods such as neural networks and support vector regression (SVR) have extensively and successfully been applied to nonlinear function approximation. In this paper, fuzzy support vector regression (FS... View full abstract»

• ### Design of a Fractional Order Phase Shaper for Iso-Damped Control of a PHWR Under Step-Back Condition

Publication Year: 2010, Page(s):1602 - 1612
Cited by:  Papers (29)
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Phase shaping using fractional order (FO) phase shapers has been proposed by many contemporary researchers as a means of producing systems with iso-damped closed loop response due to a stepped variation in input. Such systems, with the closed loop damping remaining invariant to gain changes can be used to produce dead-beat step response with only rise time varying with gain. This... View full abstract»

• ### Mixed Field Dosimetry Using Semiconductor Dosimeters at an Extremely High Dose Area

Publication Year: 2010, Page(s):1613 - 1617
Cited by:  Papers (2)
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The goal of this research was to measure extremely high doses of ionizing and non-ionizing radiation separately near a commercial nuclear reactor. Specially designed p-MOSFETs were used for detecting ionizing radiation. Custom PIN diode dosimeters were developed in-house for measuring high dose of non-ionizing radiation. The two semiconductor dosimeters successfully measured ionizing and non-ioniz... View full abstract»

• ### Gamma-Radiation-Induced Photodarkening in Unpumped Optical Fibers Doped With Rare-Earth Constituents

Publication Year: 2010, Page(s):1618 - 1625
Cited by:  Papers (15)
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Fibers doped with rare-earth constituents such as Er3+ and Yb3+ are exceedingly important to designers of fiber-optical systems due to their ability to amplify signals in the near infra-red, low-absorption regions of conventional silicate fibers. Extending the range of operating conditions for these systems to include adverse radiation environments requires a detailed study o... View full abstract»

• ### Different Dose Rate Radiation Effects on Linear CCDs

Publication Year: 2010, Page(s):1626 - 1631
Cited by:  Papers (7)
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Charge coupled devices (CCD) have been tested at widely differing dose rates to examine the radiation tolerance dependence on the dose rates. The test results show a maximum tolerance of CCDs at 10.2 rad(Si)/sec, a slight reduction in tolerance at 34.8 rad(Si)/sec and a quite precipitous roll off when moving down to 1 rad(Si)/sec and 0.1 rad(Si)/sec. The degradation of the dummy output voltages an... View full abstract»

• ### Ultrasonically Recovered Performance of $gamma$-Irradiated Metal-Silicon Structures

Publication Year: 2010, Page(s):1632 - 1639
Cited by:  Papers (5)
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The MHz-frequency ultrasound treatment is shown to offer a recovery tool in the current-voltage (I-V ) characteristics of the γ-irradiated metal-silicon structures. Experimental observations of the ultrasound treatment effect on the carrier transport and photocurrent transient parameters are highlighted. It is shown that up to 30% of the Schottky diode currents and free carrier lifetimes wo... View full abstract»

• ### Radiation Hardness of ${rm TiO}_{2}$ Memristive Junctions

Publication Year: 2010, Page(s):1640 - 1643
Cited by:  Papers (41)
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Semiconducting TiO2 displays non-volatile multi-state, hysteretic behavior in its I-V characteristics that can be exploited as a memory material in a memristive device. We exposed memristive TiO2 devices in the on and off resistance states to 45 Mrad(Si) of ~1-MeV gamma radiation and 23 Mrad(Si) of 941-MeV Bi-ions under zero bias conditions and none of the devic... View full abstract»

• ### CoRoT Satellite: Analysis of the In-Orbit CCD Dark Current Degradation

Publication Year: 2010, Page(s):1644 - 1653
Cited by:  Papers (10)
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This paper presents the analysis of the CoRoT CCDs dark current degradation measured during more than 2.5 years in orbit. Starting from on-ground irradiation results obtained during the space qualification of the detectors, a model is proposed to calculate the in-orbit pixel dark current distribution (including the hot pixels one). The modeling results are found to be in good agreement with the in... View full abstract»

• ### ASIC for SDD-Based X-Ray Spectrometers

Publication Year: 2010, Page(s):1654 - 1663
Cited by:  Papers (16)  |  Patents (1)
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We present an application-specific integrated circuit (ASIC) for high-resolution x-ray spectrometers (XRS). The ASIC reads out signals from pixelated silicon drift detectors (SDDs). The pixel does not have an integrated field effect transistor (FET); rather, readout is accomplished by wire-bonding the anodes to the inputs of the ASIC. The ASIC dissipates 32 mW, and offers 16 channels of low-noise ... View full abstract»

• ### A Prototype Pixel Readout IC for High Count Rate X-Ray Imaging Systems in 90 nm CMOS Technology

Publication Year: 2010, Page(s):1664 - 1674
Cited by:  Papers (26)
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We report on the design of a prototype IC called PX90 dedicated for readout of hybrid semiconductor detectors used for X-ray imaging applications. The PX90 has dimensions of 4 mm × 4 mm and was designed in CMOS 90 nm technology with 9 metal layers. The core of the IC is a matrix of 40 × 32 pixels with 100 m × 100 m pixel size. A 60 m × 60 m square passivation opening in... View full abstract»

• ### Optical and Scintillation Properties of the Thermal Neutron Scintillator Li$_{3}$ YCl$_{6}$ :Ce

Publication Year: 2010, Page(s):1675 - 1681
Cited by:  Papers (3)  |  Patents (1)
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The thermal neutron detection, X-ray detection, gamma detection and the optical properties of the chloride scintillator Li3YCl6:Ce are reported. Photo-luminescence (PL) and luminescence excitation spectra together with X-ray excited emission studies provide information on the scintillation and luminescence mechanism. Thermal neutron scintillation performance was investigated ... View full abstract»

• ### A Digital Method for the Discrimination of Neutrons and $gamma$ Rays With Organic Scintillation Detectors Using Frequency Gradient Analysis

Publication Year: 2010, Page(s):1682 - 1691
Cited by:  Papers (32)
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A digital method for the discrimination of neutron and γ-ray events from an organic scintillator has been investigated by using frequency gradient analysis (FGA) based on the Fourier transform. Since the scintillation process and the photomultiplier tube (PMT) anode signal are often very noisy, most pulse-shape discrimination methods in a scintillation detection system (e.g., the charge com... View full abstract»

• ### A New Scintillator for Fast Neutron Detection: Single-Crystal ${rm CeCl}_{3}({rm CH}_{3}{rm OH})_{4}$

Publication Year: 2010, Page(s):1692 - 1696
Cited by:  Papers (7)
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A new scintillator material for the detection of fast neutrons that consists of a methanol adduct of cerium trichloride with the composition CeCl3(CH3OH)4 has been characterized using 14.1 MeV neutrons from a deuterium-tritium neutron generator and fast neutrons from a bare instrumented 252Cf source. The timing resolution of the scintillator for fast neu... View full abstract»

## Aims & Scope

IEEE Transactions on Nuclear Science focuses on all aspects of the theory and applications of nuclear science and engineering, including instrumentation for the detection and measurement of ionizing radiation; particle accelerators and their controls; nuclear medicine and its application; effects of radiation on materials, components, and systems; reactor instrumentation and controls; and measurement of radiation in space.

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