By Topic

IEEE Transactions on Nuclear Science

Issue 3  Part 3 • June 2009

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

Filter Results

Displaying Results 1 - 25 of 37

Publication Year: 2009, Page(s):C1 - 1474
| PDF (86 KB)
• IEEE Transactions on Nuclear Science publication information

Publication Year: 2009, Page(s): C2
| PDF (39 KB)
• A Cherenkov Radiation Detector With High Density Aerogels

Publication Year: 2009, Page(s):1475 - 1478
Cited by:  Papers (8)  |  Patents (1)
| | PDF (381 KB) | HTML

We have designed a threshold Cherenkov detector at the Rutherford-Appleton Laboratory to identify muons with momenta between 230 and 350 MeV/c. We investigated the properties of three aerogels for the design. The nominal indices of refraction were n = 1.03, 1.07, 1.12, respectively. Two of the samples are of high density aerogel not commonly used for Cherenkov light detection. We present re... View full abstract»

• Applications of Twisted Hollow Waveguides as Accelerating Structures

Publication Year: 2009, Page(s):1479 - 1486
Cited by:  Papers (1)
| | PDF (770 KB) | HTML

A new class of accelerating structures employing a uniformly twisted waveguide is considered. Such a twisted helical structure can be designed to have a specified longitudinal cross section. The design of twisted accelerating structures is discussed with regard to particle velocity and strength of the accelerating field. It is shown how to choose a cross section and twist rate in order to produce ... View full abstract»

• Beam Energy Compensation in a Thermionic RF Gun by Cavity Detuning

Publication Year: 2009, Page(s):1487 - 1491
Cited by:  Papers (2)
| | PDF (421 KB) | HTML

A thermionic RF gun usually suffers from a rapid decrease of electron beam energy caused by a rapid increase of beam current due to the back-bombardment effect. The authors propose a new method named ldquocavity detuningrdquo to keep the electron beam energy constant. This method detunes the resonant frequency of the gun cavity to a frequency that is lower (by several hundred kilohertz) than the d... View full abstract»

• Multi-Nanosecond High Power Pulse Generation at 7.8 GHz With a Dielectric-Loaded Power Extractor

Publication Year: 2009, Page(s):1492 - 1497
Cited by:  Papers (1)
| | PDF (838 KB) | HTML

Power extraction from charged particle beams is a prospective way to develop future high power radio frequency (RF) sources. We have designed and tested a 7.8 GHz power extractor based on a dielectric-loaded waveguide. Building upon earlier work on single electron bunch tests, 10 ns and 22 ns megawatt-level RF pulses have been generated with trains consisting of 16 electron bunches each, by using ... View full abstract»

• Optimal Acceleration in Isochronous Straight Sector Cyclotrons

Publication Year: 2009, Page(s):1498 - 1506
Cited by:  Papers (5)
| | PDF (747 KB) | HTML

During the design of a cyclotron the time and attention dedicated to the injection and extraction of a beam usually overcome those devoted to the acceleration. However, the efficiency of the accelerating process largely contributes to the overall efficiency of the machine because the beam spends the most time in the accelerating region. A thorough and systematic study of the influence of beam para... View full abstract»

• A Capacitor Charge Pump DC-DC Converter for Physics Instrumentation

Publication Year: 2009, Page(s):1507 - 1510
Cited by:  Papers (7)
| | PDF (207 KB) | HTML

We have prototyped a switched capacitor DC-DC converter aimed at powering low voltage integrated circuits in particle physics instrumentation. The ideal output current is 4 times the input current. The prototype was built using a CMOS integrated circuit containing all switches and switch driver circuitry, with external capacitors and clocks. We present measurements of performance with and without ... View full abstract»

• Noise Minimization of MOSFET Input Charge Amplifiers Based on $Deltamu$ and $Delta{rm N}$ $1/f$ Models

Publication Year: 2009, Page(s):1511 - 1520
Cited by:  Papers (16)
| | PDF (1269 KB) | HTML

The optimization of the noise performance of integrated complementary metal-oxide semiconductor (CMOS) charge amplifiers is studied in detail considering accurate 1/f noise modeling for the input metal-oxide semiconductor field-effect transistor (MOSFET) biased in a strong inversion-saturation region. This paper aims to generalize and correct previously published analyses which have been ba... View full abstract»

• Thermomechanical Stresses Analysis of a Single Event Burnout Process

Publication Year: 2009, Page(s):1521 - 1530
Cited by:  Papers (4)
| | PDF (2273 KB) | HTML

This work analyzes the thermal and mechanical effects arising in a power Diffusion Metal Oxide Semiconductor (DMOS) during a Single Event Burnout (SEB) process. For studying these effects we propose a more detailed simulation structure than the previously used by other authors, solving the mathematical models by means of the Finite Element Method. We use a cylindrical heat generation region, with ... View full abstract»

• Coincidence Summing Corrections in Gamma-Ray Spectrometry Using GEANT4 Code

Publication Year: 2009, Page(s):1531 - 1536
Cited by:  Papers (20)
| | PDF (510 KB) | HTML

In this paper coincidence summing corrections in gamma-ray spectrometry have been analyzed in depth. Experimental setup included a n-type germanium detector and two efficient geometries of measurement (Marinelli beaker and air filter) calibrated with multi gamma radionuclides in the energy range of 40-1500 keV. Monte Carlo simulations were carried out using the GEANT4 code in order to develop this... View full abstract»

• An Automatic Calibration System for Portable Radiation Monitors

Publication Year: 2009, Page(s):1537 - 1543
Cited by:  Papers (1)
| | PDF (673 KB) | HTML

A novel electromechanical system capable of 3D displacement has been designed and built to be used in the automatic calibration of portable radiation monitors. The relevant feature of the system is that can adjust very precisely the position of the monitor in front of the standard radiation sources. The distance between source and monitor can be adjusted from 40 cm to 700 cm, assuring a plusmn0.1 ... View full abstract»

• Collection of Photoelectrons and Operating Parameters of CsI Photocathode GEM Detectors

Publication Year: 2009, Page(s):1544 - 1549
Cited by:  Papers (10)
| | PDF (841 KB) | HTML

A study has been made of the parameters affecting the extraction and collection of photoelectrons from the surface of a CsI photocathode in a triple GEM detector. The purpose of this study was to optimize the photoelectron collection efficiency and GEM operating conditions for the PHENIX Hadron Blind Detector (HBD) at RHIC. The parameters investigated include the electric field at the surface of t... View full abstract»

• GEMs With Double Layered Micropattern Electrodes and Their Applications

Publication Year: 2009, Page(s):1550 - 1557
Cited by:  Papers (9)
| | PDF (2488 KB) | HTML

We have developed and tested several new designs of GEM detectors with micropattern electrodes manufactured by microelectronic technology. In one design, the inner layer of the detector's electrode consists of thin metallic strips and the outer layer is made of a resistive grid manufactured by a screen printing technology. In other designs, the electrodes were made of metallic strips fed by HV via... View full abstract»

• Quenched and Non-Quenched Ar-Xe Penning Mixtures as Detection Media for a Gridded-Microstrip Gas Chamber X-Ray Detector

Publication Year: 2009, Page(s):1558 - 1563
Cited by:  Papers (1)
| | PDF (264 KB) | HTML

The performance of quenched and non-quenched argon-xenon Penning mixtures in a Gridded-Microstrip Gas Chamber is studied for 5.9 keV X-rays. The best energy resolution obtained was 12.5% for the 95%Ar-5%Xe mixture. Charge multiplication gains one order of magnitude higher than in pure xenon were obtained for 95%Ar-5%Xe. With the addition of the quenching agent (methane), although the gas gain at t... View full abstract»

• GEM Operation in High-Pressure ${rm CF}_{4}$: Studies of Charge and Scintillation Properties

Publication Year: 2009, Page(s):1564 - 1567
Cited by:  Papers (1)
| | PDF (314 KB) | HTML

Tetrafluoromethane (CF4) combined with Helium-3 is widely used as the filling gas for neutron detectors. CF4 is generally known as an efficient gas for proton and tritium stopping, as well as a medium with low gamma sensitivity. Filling pressures above 2.5 bar are needed to achieve detector position resolutions below 1 mm. In this work, we have studied the performance of a si... View full abstract»

• Cathode Strip Chambers in ATLAS: Installation, Commissioning and in Situ Performance

Publication Year: 2009, Page(s):1568 - 1574
Cited by:  Papers (3)
| | PDF (860 KB) | HTML

The Muon Spectrometer of the ATLAS detector at the LHC is designed to provide high quality stand-alone muon identification, momentum measurement and trigger capabilities with high pseudorapidity coverage. Precision tracking at the inner-most station in the high pseudorapidity regions, 2.3 < |eta| < 2.7, is performed by 16 four-layered Cathode Strip Chambers on each end-cap. These are multi-w... View full abstract»

Publication Year: 2009, Page(s):1575 - 1583
Cited by:  Papers (4)
| | PDF (424 KB) | HTML

Cosmic radiation and solar flares can be a major source of background radiation at the Earth's surface. This paper examines the relationship between extraterrestrial radiation and the detectable background in radiation portal monitors used for homeland security applications. Background radiation data from 13 radiation portal monitor facilities are examined and compared against external sources of ... View full abstract»

• A Comparison of Fast Inorganic Scintillators for Thermal Neutron Analysis Landmine Detection

Publication Year: 2009, Page(s):1584 - 1592
Cited by:  Papers (13)
| | PDF (741 KB) | HTML

The Improved Landmine Detector System, a militarily fielded, teleoperated vehicle-mounted multi-sensor landmine detector, uses a thermal neutron analysis (TNA) detector to confirm the presence of a mine by detecting the bulk nitrogen in its explosives. To improve the nitrogen sensitivity or measurement times of the TNA detector, higher gamma ray rates will be required. The chief bottleneck to achi... View full abstract»

• Characterisation Results From an AGATA Prototype Detector

Publication Year: 2009, Page(s):1593 - 1599
Cited by:  Papers (8)
| | PDF (1280 KB) | HTML

An Advanced GAmma Tracking Array (AGATA) symmetric prototype high purity Germanium (HPGe) detector has been tested. The detector was illuminated with a 1 mm collimated beam of 137Cs (662 keV) gamma rays. The beam was raster scanned across the front and sides of the detector and the charge sensitive preamplifier output pulse shapes from all 37 channels (36 segments plus the centre contac... View full abstract»

• Water-Level Control for the U-Tube Steam Generator of Nuclear Power Plants Based on Output Feedback Dissipation

Publication Year: 2009, Page(s):1600 - 1612
Cited by:  Papers (23)
| | PDF (633 KB) | HTML

U-tube steam generator (UTSG) is one of the most important facilities in a pressurized-water nuclear reactor. The water level control of UTSG is crucial to secure the sufficient cooling inventory for the nuclear reactor and, at the same time, to prevent the damage of turbine blades. Because of high nonlinearity and nonminimum phase characteristics of steam generator dynamics, it is necessary to es... View full abstract»

• Modeling of Charge Transfer Inefficiency in a CCD With High-Speed Column Parallel Readout

Publication Year: 2009, Page(s):1613 - 1617
Cited by:  Papers (2)
| | PDF (818 KB) | HTML

Charge Coupled Devices (CCDs) have been successfully used in several high energy physics experiments over the past two decades. Their high spatial resolution and thin sensitive layers make them an excellent tool for studying short-lived particles. The Linear Collider Flavour Identification (LCFI) collaboration is developing Column-Parallel CCDs (CPCCDs) for the vertex detector of a future Linear C... View full abstract»

• Delay and Energy Analysis of SEU and SET-Tolerant Pipeline Latches and Flip-Flops

Publication Year: 2009, Page(s):1618 - 1628
Cited by:  Papers (12)
| | PDF (468 KB) | HTML

In the presence of radiation, particle strikes can cause temporary signal errors in ICs. Particle strikes that directly affect memory are known as single event upsets (SEUs), while strikes that affect combinational logic and spread to memory are called single event transients (SETs). This paper focuses on SEU and SET-tolerant approaches to constructing pipeline latches and flip-flops. Level-sensit... View full abstract»

• Investigating Phase Contrast Neutron Imaging for Mixed Phase-Amplitude Objects

Publication Year: 2009, Page(s):1629 - 1636
Cited by:  Papers (2)
| | PDF (1925 KB) | HTML

Phase contrast imaging is an imaging modality that has been extensively applied in X-ray imaging and was demonstrated using neutrons over the past few years. In this case, contrast in the image, especially at edges, is enhanced due to phase shifts that take place as the neutron wave passes through regions in the sample that differ in the coherent scattering length density. Usually, a pure phase ob... View full abstract»

• Development and Fabrication of Cylindrical Silicon-on-Insulator Microdosimeter Arrays

Publication Year: 2009, Page(s):1637 - 1641
Cited by:  Papers (6)
| | PDF (818 KB) | HTML

Recent developments in the fabrication and simulation of prototype silicon-on-insulator (SOI) microdosimeter arrays are presented. A new planar array design has been proposed which has a number of advantages over the previous elongated parallelepiped and cylindrical mesa array designs. This novel planar array design, which incorporates a guard ring, is based upon 2500 planar cylindrically shaped p... 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.

Full Aims & Scope

Meet Our Editors

Editor-in-Chief
Paul Dressendorfer
11509 Paseo del Oso NE
Albuquerque, NM  87111  USA