IEEE Transactions on Nuclear Science

Issue 5  Part 3 • Oct. 2012

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

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• Table of Contents

Publication Year: 2012, Page(s):C1 - 2366
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• IEEE Transactions on Nuclear Science publication information

Publication Year: 2012, Page(s): C2
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• An On-Line Acoustic Fluorocarbon Coolant Mixture Analyzer for the ATLAS Silicon Tracker

Publication Year: 2012, Page(s):2367 - 2374
Cited by:  Papers (3)
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The ATLAS silicon tracker community foresees an upgrade from the present octafluoropropane (C3F8) evaporative cooling fluid to a composite fluid with a probable 10-20% admixture of hexafluoroethane (C2F6). Such a fluid will allow a lower evaporation temperature and will afford the tracker silicon substrates a better safety margin against leakage current-... View full abstract»

• Improving the Performance of Quasi-Hemispherical CdZnTe Detectors Using Infrared Stimulation

Publication Year: 2012, Page(s):2375 - 2382
Cited by:  Papers (3)
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The influence of monochromatic optical stimulation with wavelengths from 400 to 1100 nm on the characteristics of CdZnTe quasi-hemispherical detectors was studied. It was found that illumination with infrared (IR) light with wavelengths of 870-900 nm close to the absorption edge of the CdZnTe significantly improves the performance of the detector at room temperature. Improvement can be achieved wi... View full abstract»

• Theory of Deep Level Spectroscopy in Semi-Insulating CdTe

Publication Year: 2012, Page(s):2383 - 2391
Cited by:  Papers (4)
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Numerical simulations of thermoelectric effect spectroscopy (TEES) and photo-induced transient current spectroscopy (PICTS) in CdTe were performed with the aim to interpret experimental results and to look for possibilities to obtain credible information about trap capture cross-sections. The TEES and PICTS spectra were calculated by solving kinetic equations. Trap energy and capture cross section... View full abstract»

• Characterization of a Pixelated CdTe X-Ray Detector Using the Timepix Photon-Counting Readout Chip

Publication Year: 2012, Page(s):2392 - 2401
Cited by:  Papers (17)
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A prototype 1mm thick CdTe detector bonded to a Timepix chip with 256*256 pixels at 55 μ m pitch was evaluated for use as a photon-counting imaging detector at high energy synchrotron beamlines (energy range 30-100 keV). A complete characterization of the system was performed. Powder diffraction experiments have also been conducted using a monochromatic beam at the ESRF. The expected gain i... View full abstract»

• Determination of Electric-Field Profile in CdTe and CdZnTe Detectors Using Transient-Current Technique

Publication Year: 2012, Page(s):2402 - 2408
Cited by:  Papers (16)
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Transient-current technique was used for measuring the profile of the electric field in CdTe and CdZnTe samples excited by an 241Am α-particle source. Current waveforms were analyzed by a general model, which involved both the effect of the space charge in the depleted region and charge trapping. The carrier mobility and the electric-field profile were also evaluated in this way.... View full abstract»

• A Novel Microdosimeter Based Upon Artificial Single Crystal Diamond

Publication Year: 2012, Page(s):2409 - 2415
Cited by:  Papers (5)
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This paper represents the first attempt to discuss the use of an artificial single-crystal diamond as a new microdosimeter. The Diamond MicroDosimeter (DMD) detecting region is a thin layer of highly controlled thickness ( <; 5 μm) and high purity intrinsic monocrystalline diamond grown over a backing boron doped monocrystalline diamond. This viable, small, compact and user-friendly devi... View full abstract»

• Spectrometric Performances of Monocrystalline Artificial Diamond Detectors Operated at High Temperature

Publication Year: 2012, Page(s):2416 - 2423
Cited by:  Papers (6)
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This paper reports about the performances of single crystal diamond (SCD) detectors operated at high temperature (up to 200 °C) and irradiated with alpha particles. Two different types of SCD detectors were studied: (a) SCD of commercial type; (b) SCD produced at Rome “Tor Vergata” University and characterized by a layered structure. The first measurement of the response funct... View full abstract»

• Ionic Conductivity of TlBr $_{1 - {rm x}}$I $_{rm x}$ $({rm x} = 0, 0.2, 1)$: Candidate Gamma Ray Detector

Publication Year: 2012, Page(s):2424 - 2427
Cited by:  Papers (1)
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The ionic conductivity of TlBr, TlI and their solid solutions, candidates for high energy radiation detection, was examined using impedance spectroscopy. The orthorhombic to cubic phase change in TlI was observed via a steep change in conductivity with increasing temperature, whereas the TlBr-TlI solid solution was cubic throughout the measured temperature range, in agreement with the literature. ... View full abstract»

• Investigation of Electromagnetic Field Perturbation With Respect to Mechanical Imperfections in Radio-Frequency Quadrupole (RFQ) Structure

Publication Year: 2012, Page(s):2428 - 2434
Cited by:  Papers (2)
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Electromagnetic (EM) fields near the beam axis in a radio frequency quadrupole (RFQ) are very sensitive to dimensional changes especially on vane tip geometries. Due to measurement difficulties, field distribution around the beam axis is generally assumed to be equal to that measured outside of vane gaps in quadrants using a bead-pull technique. If an RFQ structure has any mechanical imperfections... View full abstract»

• Evaluation of a Fast Pulse Sampling Module With Switched-Capacitor Arrays

Publication Year: 2012, Page(s):2435 - 2443
Cited by:  Papers (4)
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We introduce a fast pulse sampling module with the use of switched-capacitor arrays (SCAs). The module is in the size of 3U for PCI extensions for Instrumentations (PXI), and there are a total of six channels with a sampling rate of up to 5 giga samples per second (GS/s) per channel. With this module, we evaluate the issues of fast pulse timing from reconstructed waveform, as well as the scheme of... View full abstract»

• PVT Compensation for Wilkinson Single-Slope Measurement Systems

Publication Year: 2012, Page(s):2444 - 2450
Cited by:  Papers (4)
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A pulse-width locked loop (PWLL) circuit is reported that compensates for process, voltage, and temperature (PVT) variations of a linear ramp generator within a 12-bit multi-channel Wilkinson (single-slope integrating) Analog-to-Digital converter (ADC). This PWLL was designed and fabricated in a 0.5- μm Silicon Germanium (SiGe) BiCMOS process. Simulation and silicon measurement data are sho... View full abstract»

• Dynamic Maximization of Filter Length in Digital Spectroscopy

Publication Year: 2012, Page(s):2451 - 2456
Cited by:  Papers (3)
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In many modern applications based on detected radiation measurements, high rate and high resolution are more and more features of primary importance. In this scenario, it is well known that high resolution of measurements and high rate of pulses are conflicting issues, which implies a trade-off between live time of the system and precision of measurements. We propose a digital processing technique... View full abstract»

• Noise in Charge Amplifiers—A $g_{m}/I_{D}$ Approach

Publication Year: 2012, Page(s):2457 - 2462
Cited by:  Papers (6)
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Charge amplifiers represent the standard solution to amplify signals from capacitive detectors in high energy physics experiments. In a typical front-end, the noise due to the charge amplifier, and particularly from its input transistor, limits the achievable resolution. The classic approach to attenuate noise effects in MOSFET charge amplifiers is to use the maximum power available, to use a mini... View full abstract»

• A 128-Channel, 8.9-ps LSB, Column-Parallel Two-Stage TDC Based on Time Difference Amplification for Time-Resolved Imaging

Publication Year: 2012, Page(s):2463 - 2470
Cited by:  Papers (11)
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This paper proposes a 128-channel column-parallel two-stage time-to-digital converter (TDC) utilizing a time difference amplifier (TDA) and shows measurement results obtained from an implementation in a 0.35- μm CMOS process. The first stage operates as a coarse TDC, the time residue is amplified by a TDA, then converted by the second-stage TDC. As the gain of the time difference amplifier ... View full abstract»

• Low Noise Front End ASIC With Current Mode Active Cooled Termination for the Upgrade of the LHCb Calorimeter

Publication Year: 2012, Page(s):2471 - 2478
Cited by:  Papers (5)
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The current mode line terminating input stage of an integrated circuit for the upgrade of the LHCb calorimeter front end electronics is presented. The circuit is based on a current mode input stage followed by two fully differential interleaved channels, namely a switched integrator and a track and hold. The input stage employs a novel electronically cooled input termination scheme to achieve stri... View full abstract»

• DEPFET Macropixel Detectors for MIXS: Integration and Qualification of the Flight Detectors

Publication Year: 2012, Page(s):2479 - 2486
Cited by:  Papers (5)
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The Mercury imaging X-ray spectrometer (MIXS) on board of ESA's fifth cornerstone mission BepiColombo will be the first space instrument using DEpleted P-channel FET (DEPFET) based detectors. The MIXS spectrometer comprises two channels with identical focal plane detectors and is dedicated to energy resolved imaging of X-ray fluorescence from the mercurial surface. We report on the characterizatio... View full abstract»

• Phenomenological Model for Predicting theEnergy Resolution of Neutron-Damaged Coaxial HPGe Detectors

Publication Year: 2012, Page(s):2487 - 2493
Cited by:  Papers (1)
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The peak energy resolution of germanium detectors deteriorates with increasing neutron fluence. This is due to hole capture at neutron-created defects in the crystal which prevents the full energy of the gamma-ray from being recorded by the detector. A phenomenological model of coaxial HPGe detectors is developed that relies on a single, dimensionless parameter that is related to the probability f... View full abstract»

• Implementation and Performance of the Electronics and Computing System of the Gamma Ray Energy Tracking In-Beam Nuclear Array (GRETINA)

Publication Year: 2012, Page(s):2494 - 2500
Cited by:  Papers (7)
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The Gamma Ray Energy Tracking In-Beam Nuclear Array (GRETINA), a germanium detector system capable of measuring energy and position (within better than 2 mm rms) of gamma-ray interaction points and tracking multiple gamma-ray interactions, has been built. GRETINA is composed of seven detector modules, each with four high purity germanium crystals. Four custom designed electronics support the opera... View full abstract»

• Comparison of SOI Microdosimeter and Tissue Equivalent Proportional Counter Measurements at the CERF Facility

Publication Year: 2012, Page(s):2501 - 2505
Cited by:  Papers (2)  |  Patents (1)
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The CERN-EU High Energy Reference Field (CERF) facility is used in the calibration of neutron dosimeters for radiation protection applications in aviation and high energy physics. A comparison of the facility's microdosimetric spectra obtained with a new Silicon on Insulator (SOI) Microdosimeter and a HAWK Tissue Equivalent Proportional Counter (TEPC) is presented. Experimental data obtained with ... View full abstract»

• Optical and Radiographical Characterization of Silica Aerogel for Cherenkov Radiator

Publication Year: 2012, Page(s):2506 - 2511
Cited by:  Papers (7)
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We present optical and X-ray radiographical characterization of silica aerogels with refractive index from 1.05 to 1.07 for a Cherenkov radiator. A novel pin-drying method enables us to produce highly transparent hydrophobic aerogels with high refractive index by shrinking wet-gels. In order to investigate the uniformity in the density (i.e., refractive index) of an individual aerogel monolith, we... View full abstract»

• Conceptual Design, Development and Preliminary Tests of a Compact Neutron Spectrometer for the JET Experiment

Publication Year: 2012, Page(s):2512 - 2519
Cited by:  Papers (9)
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A Compact Neutron Spectrometer (CNS) has been developed to measure the neutron emission spectra in Joint European Torus (JET) fusion plasma experiments. The spectrometer, based on a liquid scintillation detector (BC501A), is equipped with a Digital Pulse Shape Discrimination (DPSD) acquisition system for neutron (n) and gamma-ray (γ) separation. The CNS enables recording the n and γ ... View full abstract»

• Dynamic Weighting Ensembles for Incremental Learning and Diagnosing New Concept Class Faults in Nuclear Power Systems

Publication Year: 2012, Page(s):2520 - 2530
Cited by:  Papers (14)
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Key requirements for the practical implementation of empirical diagnostic systems are the capabilities of incremental learning of new information that becomes available, detecting novel concept classes and diagnosing unknown faults in dynamic applications. In this paper, a dynamic weighting ensembles algorithm, called Learn++.NC, is adopted for fault diagnosis. The algorithm is speciall... View full abstract»

• Physically-Based Power-Level Control for Modular High Temperature Gas-Cooled Reactors

Publication Year: 2012, Page(s):2531 - 2549
Cited by:  Papers (19)
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Because of its strong inherent safety, the modular high temperature gas-cooled nuclear reactor (MHTGR) has been regarded as the central part of the next generation nuclear plants (NGNPs). Power-level control is one of the key techniques which provide safe, stable and efficient operation for the MHTGRs. The physically-based regulation theory is definitely a promising trend of modern control theory ... View full abstract»

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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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