The linac wire scanner system for the Spallation Neutron Source (SNS) at Oak Ridge, TN, USA, calls for 5 units in the medium energy beam transport (MEBT), 5 in the drift tube linac (DTL), and 10 in the coupled cavity linac (CCL). In this paper we present expected signal levels and an analysis of the error in the beam size measurement as functions of ...

In the wire-scanner recentering experiment, the effective center of a wire scanner is determined by turning the previous quadrupole magnet on and off. The beam is steered into the quadrupole such that it drifts to the same point somewhere on a second wire...

The authors present the results of a feasibility study for the fabrication of a hot-wire mini-scanner. After reviewing what scanning and hot-wire scanning entail, they describe a simple physical study of the system. They then present the solution algorith...

Fifty wire scanners are in use at SLC for phase space and beam optics monitoring. A large number of failures of the 50 (mu)m wire used in the scanners have occurred. Studies of these show strong electro-magnetic fields produced by the beam to be the proba...

To monitor the beam profile at the end of the linac non-destructively, a wire scanner as a new diagnostic instrument was designed, manufactured and installed in 2007. Since then, several measurements have been carried out using this device. This paper describes the whole system of the wire scanner and the testing ...

... Accession Number : ADD312291. Title : LASER SCANNER FOR AUTOMATIC INSPECTION OF PRINTED WIRING BOARDS. Corporate Author : ...

In this paper, we report the design and simulation of a wire scanner for the linac of the CSNS (China Spallation Neutron Source). The wire scanner is used to measure the transverse beam profile and the emittance. The effect of beam energy change upon the mechanical design of the wire ...

The Linac Coherent Light Source (LCLS), currently under design, requires accurate alignment between the electron beam and each undulator's magnetic centerline. A beam finder wire (BFW) instrument has been developed to provide beam location information that is used to move the undulators to their appropriate positions. A BFW instrument is mounted at each of the 33 ...

Techniques and results of RHIC BPM measurements are presented. These include wire scanner measurements of uncalibrated and calibrated BPM position and roll accuracy, preliminary measurements of the coupling between adjacent striplines to permit in situ offset calibration of the BPM signal cables and electronics, frequency dependence of ...

The use of the Hall C achromatic arc line as an energy analyser is proposed. It has a dispersion of 12cm/% with all the quadrupoles, sextupoles, and beam correctors switched off. The transverse position and the angle of the beam at the entrance of the arc is precisely measured by a pair of wire scanners spaced by 2.5 m, and the transverse position of the ...

A double-unit automatic flux wire scanner was designed and put into operation for use in obtdining neutron flux profiles by the activation technique. The instrument consists of two scanner assemblies with the necessary information and a central control unit. Each scanner assembly consists of a stationary ...

... Accession Number : ADD338291. Title : Evaluation and Accuracy Assessment of ANDSCAN - A Portable Non-Destructive Scanner. ...

, Precision and Accuracy of Terrestrial Laser Scanners INGEO 2004 and FIG Regional Central and Eastern Variables, Precision and Accuracy of Terrestrial Laser Scanners Thorsten SCHULZ and Hilmar INGENSAND, laser scanning is used for applications in cultural heritage. The recent developments of laser ...

The Accelerator Operations & Technology Division at Los Alamos National Laboratory operates a linear particle accelerator which utilizes 110 wire scanning diagnostics devices to gain position and intensity information of the proton beam. In the upcoming LANSCE improvements, 51 of these wire scanners are to be replaced with a new ...

INTEGRATED LASER SCANNER AND INTENSITY IMAGE CALIBRATION AND ACCURACY ASSESSMENT Jafar Amiri Parian (parian, agruen)@geod.baug.ethz.ch KEY WORDS: Laser Scanner, Panoramic Image, Calibration, Sensor, Modeling, Accuracy, Test ABSTRACT: Nowadays, the use of laser scanner devices as an active ...

Fifty wire scanners are in use at SLC for phase space and beam optics monitoring. A large number of failures of the 50 [mu]m wire used in the scanners have occurred. Studies of these show strong electro-magnetic fields produced by the beam to be the probable cause. The problem has been cured with the adoption of a ...

Fifty wire scanners are in use at SLC for phase space and beam optics monitoring. A large number of failures of the 50 {mu}m wire used in the scanners have occurred. Studies of these show strong electro-magnetic fields produced by the beam to be the probable cause. The problem has been cured with the adoption of a ...

A system flexible enough to meet present and future work requirements was developed. The Component Locator System usually is referred to as a Work Director. The Work Director shows the exact location for installing the wire on the pointed wiring board (PWB) and codes the Cable Scanner for the correct wire. The ...

In the wire-scanner recentering experiment, the effective center of a wire scanner is determined by turning the previous quadrupole magnet on and off. The beam is steered into the quadrupole such that it drifts to the same point somewhere on a second wire scanner downstream, for the quadrupole ...

A novel wire scanner has been developed with applications at linear accelerators where small beam spots or high intensities would otherwise destroy wires. A pattern of wires is supported on a thin membrane and remains in place even when punctured by the beam. Many scans can be made before the material needs to be ...

Wire scanning beam profile monitors are used at the Stanford Linear Collider (SLC) for emittance preservation control and beam optics optimization. Twenty such scanners have proven most useful for this purpose and have performed a total of 1.5 million sca...

The high density wiring used on newer electronic devices requires an improved processing technique to eliminate wiring errors and difficulties in reworking assemblies. For example, one subassembly has three cables and three connectors containing approximately 130 wires that terminate on a printed wiring board ...

This report describes a study of the accuracy of the Cyberware WB4 whole-body scanner. CARD Lab researchers made multiple scans of a calibration object designed to simulate human body size and shape. Researchers then pinpointed landmarks on the scans usin...

... measurement. This technique retains much of the accuracy of the line scanner and can generate a very dense point cloud. The ...

... Examples of the accuracy of the laser scanner data, and software algorithms for modelling planes, cylinders, cones and spheres, are presented by ...

... method of recording the home food inventory the accuracy and simplicity of this approach can provide useful information on foods available for ...

Page 1. AD-A235 719 Accuracy of Ocean Color Data Derived from the Coastal Zone Color Scanner (CZCS) GD ...

... Accession Number : ADA235719. Title : Accuracy of Ocean Color Data Derived from the Coastal Zone Color Scanner (CZCS). ...

... Title : THE STANDARD BASE LINE AND AN INVESTIGATION OF READING ACCURACY IN BASE LINE MEASUREMENT WITH INVAR WIRES,. ...

Some results are presented comparing the accuracy of the reduced thin-wire kernel and an extended kernel with exact integration of the 1/R term of the Green's function and results are shown for simple wire structures.

Laser range scanners are a popular method for acquiring three-dimensional geometry due to their accuracy and robustness. Maximizing scanner accuracy while minimizing engineering costs is a key challenge to future scanner designs. Engineering costs arise from both expensive components and ...

The 50-MeV H/sup -/ injection line for the RCS at Argonne National Laboratory has 16 quadrupole and eight bending magnets. Horizontal and vertical profiles can be obtained at 12 wire scanner positions. Size information from these profiles can be used to determine the three ellipses parameters in each plane required to describe the transverse phase space. ...

The RHIC proton polarimeters can operate in scanning mode, giving polarization profiles and transverse beam intensity profile (beam emittance) measurements. The polarimeters function as wire scanners, providing a very good signal/noise ratio and high counting rate. This allows accurate bunch-by-bunch emittance measurements during fast target sweeps ...

The resistance of metals is a function of applied pressure, and the dependence is large enough to be significant in the calibration of transient hot-wire thermal conductivity instruments. For the highest possible accuracy, the instrument's hot wires shoul...

By using a multipole-conformal mapping expansion for the wire currents we examine the accuracy of approximations for the transfer inductance of a one dimensional array of wires (wire grid). A simple uniform fit is constructed by introduction of the decay factor from bipolar coordinates into existing formulas for ...

scanners, automatic insulin pump, portable x-ray device, invisible braces, dental arch wire, palate surgery technology, clean room apparel, implantable ...

This paper describes the design and control of a nanoprecision XY? scanner consisting of voice coil motors and air bearing guides. The proposed scanner can be installed on a conventional XY stage with long strokes to improve the positioning accuracy and settling performance. Major design considerations in developing a high precision ...

This paper describes the design and control of a nanoprecision XY Theta scanner consisting of voice coil motors and air bearing guides. The proposed scanner can be installed on a conventional XY stage with long strokes to improve the positioning accuracy and settling performance. Major design considerations in developing a high ...

SPIE Proceedings on Iiitelligent Trunsportution Systems, I99 High-performance laser range scanner, PA 15110 ABSTRACT Laser scanners, or ladars, have been used for a number of years for mobile robot of state-of-the-art, high speed, high accuracy, laser range scanner technology This work has been a joint

that is generally accepted. Goesele et al. [2] compared the accuracy of two laser scanners using a slanted edge of the resulting scan. Subject comfort is comparable to the other scanners reviewed. The laser used is also eye] sandpaper function (the translucency of the eyes can cause spikes when using a laser ...

The SLC wire scanner beam profile monitors provide accurate beam size and emittance measurements for each bunch in the three bunch SLC beam. The beam size measurement error for typical 50GeV SLC linac beams (100{mu}m {sigma}({sub x,y})) is better than 5{mu}m. Beam profile measurements can be performed throughout much of the SLC with no interruption to ...

The Low Energy Demonstration Accelerator (LEDA) is being developed at Los Alamos National Laboratory as part of the Accelerator Production of Tritium (APT) project. One of the diagnostics being developed to commission LEDSA is a slow wire scanner beam profile measurement. Initial profile measurements will be made at 6.7 MeV beam energy and 100 mA beam ...

The Low Energy Demonstration Accelerator (LEDA) [1, 2] is being developed at Los Alamos National Laboratory as part of the Accelerator Production of Tritium (APT) project. One of the diagnostics being developed to commission LEDA [3] is a slow wire scanner beam profile measurement. Initial profile measurements will be made at 6.7 MeV beam energy and 100 mA ...

The Los Alamos Neutron Science Center facility presently has 110 slow wire scanning profile measurement instruments located along its various beam lines. These wire scanners were developed and have been operating for at least 30 years. While the wire scanners solved many problems to operate and ...

Multi-orientation of a single-hot-wire is a novel way to measure the three time-mean velocities, the

... presented, but this list has also validity for laser scanner data processing in general. The quality of the DTMs derived from laser scanner data and accuracy investigations are presented for two ... ...

A linear decision rule to reduce the time required for processing multispectral scanner data is developed. Test results are presented which justify the use of the new rule for digital processing whenever both accuracy and processing time are important. A ...

A heat flow equation with beam-induced heating and various cooling processes for a carbon wire passing through a particle beam is solved. Due to equation nonlinearity a numerical approach based on discretization of the wire movement is used. Heating of the wire due to the beam-induced electromagnetic field is taken into account. An ...

The SLC wire scanner beam profile monitors provide accurate beam size and emittance measurements for each bunch in the three bunch SLC beam. The beam size measurement error for typical 50GeV SLC linac beams (100(mu)m (sigma)((sub x,y))) is better than 5(m...

The wire scanners are designed in the SSC Linac for measurement of beam emittance at various locations. In order to obtain beam parameters from the scan signal, a data analysis program was developed that considers the problems of noise reduction, machine modeling, parameter fitting, and correction. This program is intended as a tool for Linac commissioning ...

The Beam Diagnostics and Instrumentation Team (BDIT) at Los Alamos National Laboratory's LANSCE facility is presently developing a new and improved wire scanner diagnostics system controlled by National Instrument's cRIO platform. This paper describes the current state of development of the control system along with the results gathered ...

Quadruple scans were used to characterize the LEDA RFQ beam. Experimental data were fit to computer simulation models for the rms beam size. The codes were found to be inadequate in accurately reproducing details of the wire scanner data. When this discrepancy is resolved, we plan to fit using all the data in wire ...

It is important to accomplish adequate matching for a high intensity linear accelerator such as the SNS linac to minimize the mismatch and potential beam loss. In the early stage of the SNS linac design, there was a discussion over whether to match the core or to match the tail. The present study shows that the matching by minimizing rms emittances reduces both the core emittance and the beam ...

PURPOSE: Prostate carcinoma is a commonly diagnosed cancer in men. Nonsurgical treatment of early stage prostate cancer is an important alternative. The use of MRI for tumor cryoablation is of particular interest: it offers lower morbidity compared with other localized techniques. However, the current manual procedure is very time-consuming and has limited accuracy. A novel ...

A pair of high resolution wire scanners have been built and installed in the SLC final focus. The final focus optics uses a set of de-magnifying telescopes, and an ideal location for a beam size monitor is at one of the magnified image points of the interaction point. The image point chosen for these scanners is in the middle of a ...

For volume-imaging PET scanners, no septa are used to maximize the sensitivity by collecting events oblique to the scanner axis. We answer two questions: (i) how does the performance of an image reconstruction algorithm for a volume-imaging PET scanner depend on its general dimensions? and (ii) at what point is a three-dimensional (3D) ...

Wire scanning beam profile monitors are used at the Stanford Linear Collider (SLC) for emittance preservation control and beam optics optimization. Twenty such scanners have proven most useful for this purpose and have performed a total of 1.5 million scans in the 4 to 6 years since their installation. Most of the essential scanners ...

historical time frames: (l) mid-1970s imagery from the Landsat Multispectral Scanner (MSS); (2) late 19805 ~ early l990s imagery from the Landsat Thematic ...

A technique for measuring the distribution of Cf 252 in a wire is discussed. An autograph was produced by placing the wire on a photographic plate sensitive to gamma radiation. The radiograph was read by a computer automated densitometer. A brief discussion of the accuracy of the technique is presented. (DDA)

This report describes the recent results of the beam commissioning of the ATF at KEK. Recent progress on the studies on production of low emittance beam, multi-bunch beam operation and development on beam instrumentation are discussed. So far, a horizontal emittance of 1.7 {+-} 0.3 nm was measured with wire-scanners in the extraction line and with the horizontal spatial ...

The National Instruments cRIO platform is used for the new LANSCE-R wire-scanner systems. All wire-scanner electronics are integrated into a single BiRa BiRIO 4U cRIO chassis specifically designed for the cRIO crate and all interface electronics. The BiRIO chassis, actuator and LabVIEW VIs provide a complete wire-scanner system ...

This paper pre�sents the de�sign of the ac�tu�a�tor for the fast and high ac�cu�ra�cy Wire Scan�ner sys�tem. The ac�tu�a�tor con�sists of a ro�tary brushless syn�chronous motor with the per�ma�nent mag�net rotor in�stalled in�side the vac�u�um cham�ber and the sta�tor in�stalled ...

Experimental data have shown that a laser scanner can be used as a probe to make nondestructive measurements of solar cell sheet resistance with an accuracy of several percent. The photovoltaic response from cells with controlled sheet resistance was measured using the scanner and compared with the theoretical predictions made by other ...

This study determines the feasibility of using a UPC scanner to record the home food inventory of limited-resource families. Feasibility is based on the accuracy of the scanner, time involved, and researcher/study participant feedback. Program staff used ...

A valuable tool of preventive maintenance in electrical systems is the use of infrared surveys. Infrared scanners detect problems which produce an abnormal rise in temperature. Because electrical equipment is scanned while it is in service, actual operating conditions are observed. The ability to determine the amount of temperature rise is important in establishing priorities ...

This report provides results of an independent assessment of the horizontal geopositional accuracy of Earth Satellite (EarthSat) Corporation's GeoCover orthorectified Landsat Multispectral Scanner (MSS) imagery. This imagery was purchased through NASA's E...

First, an analysis of forest feature signatures was used to help explain the large variation in classification accuracy that can occur among individual forest features for any one case of spatial resolution and the inconsistent changes in classification a...

Three-dimensional (3-D) recording of the surface of the human body or anatomical areas has gained importance in many medical specialties. Thus, it is important to determine scanner precision and accuracy in defined medical applications and to establish standards for the recording procedure. Here we evaluated the precision and accuracy ...

Lasers are used in micro manufacturing and microwelding applications. Manufacturing in micrometer scale features requires good laser beam properties, but also the axes of the laser machining system have to be accurate. One of the possible technologies is a scanner. Scanners are equipped often with galvanometric actuators, which enable accurate beam ...

Volume imaging positron emission tomographic (PET) scanners with no septa and a large axial acceptance angle offer several advantages over multiring PET scanners. A volume imaging scanner combines high sensitivity with fine axial sampling and spatial resolution. The fine axial sampling minimizes the partial volume effect, which affects ...

This study introduces mathematical modeling of accelerator beams from data collected by wire scanners. Details about a beam core D(x,x',y,y') are examined in several situations: (a) for a discretization of the projection into xy-space, a maximum-entropy solution and a minimum-norm solution are developed and discussed, (b) for ...

A new software tool was created at Jefferson Lab to measure the emittance of the CEBAF electron beams. The tool consists of device control and data analysis applications. The device control application handles the work of wire scanners and writes their measurement results as well as the information about accelerator settings during these measurements into ...

A new diagnostic has been designed and commissioned that measures the profile of the beam in the halo channel of the Low Energy Demonstration Accelerator at the Los Alamos National Laboratory. This paper describes the algorithms written to analyze the data from that diagnostic, a combined wire scanner and halo scraper. These algorithms determine the safe ...

A commercial scanner provides economical and extremely accurate images. This paper discuses the scanner and how it is used in the CGI RE1000 reverse engineering and inspection system. The RE1000 complements existing laser, CMM, and x- ray technologies. The RE1000 provides greater accuracy, captures complete internal geometry, and is ...

In 1981, Elliott and Dover designed an X-ray microtomography scanner as a means of measuring the local mineral concentration in teeth. Although slow, this first generation system gave accurate measurements of the X-ray linear attenuation coefficient (LAC) due to its use of energy dispersive photon counting apparatus. Attaining such accuracy with ...

The accuracy of scanner measurements was evaluated when the sampling frequency of sensor housekeeping (HK) data was reduced from once every scan to once every eight scans. The resulting increase in uncertainty was greatest for sources with rapid or extrem...

Optical imaging of IC critical designs is impacted by optical proximity effects, OPEs, originating from finite numerical aperture of projection lenses used in modern projectors. The OPE's are caused by filtering of pattern diffraction orders falling outside of the lens band pass. Controlling OPEs is so critical to IC performance, that IC design community implemented optical proximity correction, ...

Accurate measurement of the beam phase-space is essential for the next generation of electron accelerators. A scheme for beam optics optimization and beam matrix reconstruction algorithms for the diagnostics section of the beam delivery system of the International Linear Collider based on laser-wire beam profile monitors are discussed. Possible modes of operation of the ...

The halo experiment presently being conducted at the Low Energy Demonstration Accelerator (LEDA) at Los Alamos National Laboratory utilizes a generally traditional wire scanner for measurement of the beam core profile and a graphite scraper for measurement of the tails of the beam distribution. A lossy integrator is used to detect the replacement charge ...

The tails that may be engendered in a beam's transverse phase space distribution by, e.g., intrabunch wakefields and nonlinear magnetic fields, are all important diagnostic and object of tuning in linear colliders. Wire scanners or phosphorescent screen m...

Commissioning diagnostics are described in terms of the beam physics requirements of the SSCL linac. Commissioning diagnostics include current monitors, beam position monitors, spectrometer, foil scattering experiment, wire scanners, Faraday cups, and bun...

reports errors relative to that shape Target FireWire Camera Test Article He/Ne Laser Laser Scanner Tripod Camera Support Arms Control Computer Shutter Laser "Spot" Solargenix...

reports errors relative to that shape Target FireWire Camera Test Article He/Ne Laser Laser Scanner Tripod Camera Support Arms Control Computer Shutter Laser "Spot" page 20...

The halo experiment presently being conducted at the Low Energy Demonstration Accelerator (LEDA) at Los Alamos National Laboratory (LANL) has specific instruments that acquire horizontally and vertically projected particle-density beam distributions out to greater than 10{sup 5}:1 dynamic range. They measure the core of the distributions using traditional wire ...

The Los Alamos Neutron Science Center (LANSCE) is one of the major experimental science facilities at the Los Alamos National Laboratory (LANL). The core of LANSCE's work lies in the operation of a powerful linear accelerator, which accelerates protons up to 84% the speed oflight. These protons are used for a variety of purposes, including materials testing, weapons research and isotopes ...

Emittance studies at the SLC North Damping Ring led to precise measurements of the damping time using three independent methods. These measurements were done at three different locations: (1) in the ring using a fast gated video camera which allows the acquisition of the image of the synchrotron light from a single turn, (2) using the extracted beam and a single wire ...

Quadrupole scans were used to characterize the transverse beam of the LEDA RFQ. The original scan data, obtained when the HEBT was installed immediately downstream of the RFQ, were reanalyzed by fitting to the 3-D nonlinear simulation code IMPACT. All the data in the measured profiles at the wire scanner were used, not just the rms widths. The measured and ...

A detailed description of the SSC RFQ beam instrumentation is presented. Most of the instrumentation is located in the RFQ end walls. The upstream end wall contains a segmented Faraday cup, a segmented aperture and a wire scanner. The down stream end wall contains a segmented aperture and wire scanner. Two current ...

An energy spectrometer has been installed in the LEP accelerator to determine the beam energy with a relative accuracy of 10-4. A precisely calibrated bending magnet is flanked by 6 beam position monitors (BPM). The beam energy is determined by measuring the deflection angle of the LEP beams and the integrated bending field. An accuracy of less than 10-6 m ...

It was shown that the accuracy of results for wires moved laterally from mesh edges can be greatly improved by taking account of the behavior of the field in the vicinity of the wire. Also, the distance to the end of the wire can be adjusted within a cell by using a general second-order difference form for the ...

In this paper, we will review several different 3D scanning devices. We will present a method for empirical accuracy analysis, and apply it to several scanners providing an overview of their technologies. The scanners include both general purpose and face specific scanning devices. We will focus on face scanning technique, although the ...

A diagnostic detector head harp (23) used to detect and characterize high energy particle beams using an array of closely spaced detector wires (21), typically carbon wires, spaced less than 0.1 cm (0.040 inch) connected to a hybrid microcircuit (25) formed on a ceramic substrate (26). A method to fabricate harps (23) to obtain carbon ...

Disclosed is a diagnostic detector head harp used to detect and characterize high energy particle beams using an array of closely spaced detector wires, typically carbon wires, spaced less than 0.1 cm (0.040 inch) connected to a hybrid microcircuit formed on a ceramic substrate. A method to fabricate harps to obtain carbon wire spacing ...

The most significant aspects of a moment method surface patch/wire formulation are speed, accuracy, convergence, and versatility. Techniques for improving these parameters are discussed and applied to a solution based on the piecewise sinusoidal reaction ...

This report describes the development of a lumped element model for a grounded cable clamp on a single wire transmission line. With such a model, it will be possible to increase the accuracy of existing single line, internal EMP interaction computer codes...

Errors resulting from two approximations of the transmission line parameters of overhead wires are determined. Sunde's simple approximation is found to be more accurate than the Handel function approximation.

PURPOSE: Portable CT scanners are beneficial for diagnosis in the intensive care unit, emergency room, and operating room. Portable fixed-base versus translating-base CT systems were evaluated for otologic image-guided surgical (IGS) applications based on geometric accuracy and utility for percutaneous cochlear implantation. METHODS: Five cadaveric skulls ...

It is necessary to apply extreme illumination condition on real device as minimum feature size of the device shrinks. As k1 decrease, ultra extreme illumination has to be used. However, in case of using this illumination, CD and process windows dramatically fluctuate as pupil shapes slightly changes. For past several years, Pupil Fit Modeling (PFM) was developed in order to analyze pupil shape ...

To report a study of the use of GAFCHROMIC EBT radiochromic film (RCF) digitized with a commercially available flatbed document scanner for accurate and reliable all-purpose two-dimensional (2D) absolute dosimetry within a clinical environment. We used a simplified methodology that yields high-precision dosimetry measurements without significant postirradiation correction. The ...

The accuracy of 2 commercial 24-hour electrocardiogram analyzers was tested for quantitation of ventricular premature complexes (VPCs). Scanner 1 was the Cardiodata Systems Mark III and scanner 2 was the Avionics Trendsetter DCG VII. Twenty-four-hour electrocardiographic recordings from 19 consecutive ambulatory patients with frequent ...

We designed and built a phantom consisting of vertical wires maintained under tension to be used as an ultrasonic test, calibration, and reconstruction object for the Lawrence Livermore National Laboratory annular array scanner. We provide a description of the phantom, present example data sets, preliminary reconstructions, example metadata, and MATLAB ...

A new AFE is being developed for the new LANSCE-R wire-scanner systems. The new AFE is implemented in a National Instruments Compact RIO (cRIO) module installed a BiRa 4U BiRIO cRIO chassis specifically designed to accommodate the cRIO crate and all the wire-scanner interface, control and motor-drive electronics. A single AFE module provides interface to ...

Mar 24, 2009 ... thermocouple represents a compromise between accuracy, ruggedness ... gle of the thermocouple response may be attenuated by axial heat ...

... is an increased demand for accuracy and for extended data bandwidth. ... manufacturers using small-diameter, high-resistance thermocouple wire as ...

higher accuracy. The increase in accuracy can be used to make touch inter- faces more reliable, to pack accura- cy. The increase in accuracy can be used to make touch inter- faces more reliable, pack up to 3 of the current touch location. Hardware Implementation The Guardian fingerprint scanner in our prototype ...

A brief description of the setup of an inexpensive densitometric analysis system is provided. This system uses a software package and scanner that can be obtained for a total of less than $1000 and that can be operated by any Macintosh computer, including a MacPlus. In the event that a scanner is already available, the software itself can be obtained for ...

The NBS laser scanner has been used to make measurements on the solar cell test pattern, NBS-22, to verify the theoretical calculations of Sawyer, Lehovec, and Fedotowski. The photovoltaic response from cells with controlled sheet resistance step changes and breaks in the metallization contact to the cell was measured and compared to the theoretical predictions. Laser ...

this report are shown in the following table: Parameter Symbol Unit Value Center of mass energy E cm GeV 500 Repetition rate f rep Hz 5 Bunches per pulse n b 2820 Pulse length t pulse s 950 Bunch spacing t bunch f bunch ns MHz 337 2.97 Bunch charge n bunch 1/e 2 10 10 Beam width horizontal s h m (cm) 100 (10 Beam width vertical s v m (cm) 10 (10 Table 1: Parameters of TESLA ...

In this study, we present three significant artifacts that have the potential to negatively impact the accuracy and precision of film dosimetry measurements made using GAFCHROMIC[reg] EBT radiochromic film when read out with CCD flatbed scanners. Films were scanned using three commonly employed instruments: a Macbeth TD932 spot densitometer, an Epson ...

In this study, we present three significant artifacts that have the potential to negatively impact the accuracy and precision of film dosimetry measurements made using GAFCHROMIC EBT radiochromic film when read out with CCD flatbed scanners. Films were scanned using three commonly employed instruments: a Macbeth TD932 spot densitometer, an Epson Expression ...

Low pass filtering of mask diffraction orders, in the projection tools used in microelectronics industry, leads to a range of optical proximity effects, OPEs, impacting integrated circuit pattern images. These predictable OPEs can be corrected with various, model-based optical proximity correction methodologies, OPCs , the success of which strongly depends on the completeness of the imaging models ...

In the process of 3D reconstruction of the target scene with the moving vehicle-borne single-line scanner, a method of monocular visual positioning is used to locate the exact position of the moving scanner. Attitude sensor, camera and the laser scanner are located on the same platform which is installed on the vehicle. Data can be ...

A laser-wire transverse electron beam size measurement system has been constructed and operated at the Accelerator Test Facility (ATF) extraction line at KEK. The construction of the system is described in detail along with the environment of the ATF related to the laser wire. A special set of electron beam optics was developed to generate an approximately ...

Two types of beam profile monitors are in use at LAMPF to measure the properties of the 800 MeV, 500 ..mu..A proton beam external to the linac. Both types use secondary electron emission from a wire to produce a current signal proportional to the amount of proton beam that intercepts the wire. The wire scanner ...

Capabilities of the antenna modeling code NEC are reviewed and results are presented to illustrate typical applications. Recent developments are discussed that will improve accuracy in modeling electrically small antennas, stepped-radius wires and junctions of tightly coupled wires, and also a new capability for modeling insulated ...

The lightning-induced voltage waveform on an overhead wire having a branch is studied based on numerical calculations. The induced voltage is calculated by the method where the tangential component of the electric field to the overhead wire is looked upon as inducing sources. Accuracy of the calculated result is ensured with ...

The study and purchase of a three-dimensional laser scanner for a number of diverse metrology tasks at SLAC will be covered. Specifications including range, accuracy, scan density, resolution, field of view and more are discussed and the results of field tests and demonstrations by four potential vendors is covered. This will include details on the ...

The density of compacta and spongiosa of the finger bone is determined from the attenuation coefficients using an I 125 profile scanner. Possible sources of error are critically tested and various methods of evaluation are compared. Finally, the dependence of the bone density and thickness on the age of life is investigated in a larger test sample. (RW/LH)

A micro-computer controlled system for 10 channel high precision temperature data acquisition has been developed. The temperature sensing elements are Platinum Resistance Thermometer Devices (RTD's). Probe construction, using standard, commercially available RTD elements is described and wiring and switching requirements for the 4-wire resistance ...

A digital stereoscanner with three line sensor arrays working on the pushbroom principle and a suitable rigorous compilation process, was designed. It delivers the orientation data of the camera in selectable update points along the flight path of aircraf...

A laser scanning system for measuring the geometric accuracy of parabolic solar concentrators in both laboratory and field situations is being developed. Inaccuracies in positioning and aligning this device with respect to the parabola reference system wi...

Traditional gamma safeguards measurements have usually been performed using a segmented gamma scanning (SGS) system. The accuracy of this technique relies on the assumption that the sample matrix and the activity are both uniform for a segment. Waste barr...

The author has identified the following significant results. Fourteen different classification algorithms were tested for their ability to estimate the proportion of wheat in an area. For some algorithms, accuracy of classification in field centers was ob...

A LADAR is an instrument which can rapidly capture 3-D data of a scene in the form of x, y, z points. The confidence in end products of the applications 3-D models, positioning, derived quantities-depends largely on the accuracy and precision of the laser...

models (DEMs) with vertical accuracy as good as 10 cm. LIDAR equipment, which includes a laser scanner, a Global Positioning System (GPS), and an Inertial Navigation System (INS),...