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AC magnetic measurements of the ALS Booster Synchrotron Dipole Magnet engineering model
We made a minimal set of AC magnetic measurements of the engineering model of the ALS Booster Dipole Magnet as part of the process of qualifying its design for production. Magnetic induction integrals over paths approximating electron-beam trajectories were measured with long curved coils connected to an electronic integrator. Magnetic induction was measured with point coils and an integrator and independently with a Hall-effect Gaussmeter. These quantities, and magnet current, were displayed on a commercial digital storage oscilloscope as parametric functions of time. The displayed waveforms were stored, processed and redisplayed as representations of selected magnet parameters. A waveform representing the magnet's effective-length was created by dividing the integral waveform by the magnetic induction waveform. Waveforms of the transfer functions were produced by dividing both the integral waveform and the magnetic induction waveform by the current waveform. Pairs of matched coils, connected in series opposition, provided differential measurements of field uniformity. Quadrupole and sextupole coefficients were derived from the uniformity data. These magnet parameters were measured at 2 and 10 Hz frequencies. Together with measurements of the magnetic field at selected dc levels, the ac measurements demonstrated that the magnet design met specifications and qualified it for production. 7 refs., …
Date:
September 1, 1988
Creator:
Green, M.I.; Hoyer, E.; Keller, R. & Nelson, D.H.
Object Type:
Article
System:
The UNT Digital Library
Acceleration errors in MBE-4 and in a driver
Two different acceleration schedules have been implemented in MBE-4 and the resulting longitudinal emittance measured in each case. The question arises, whether this measured longitudinal emittance is small enough so that when scaled up to a driver, using induction pulsers of the same quality, the stringent constraint on {Delta}p/p at the final focus can be met.
Date:
September 1, 1988
Creator:
Warwick,A. & Lee, E.P.
Object Type:
Report
System:
The UNT Digital Library
Accident analysis of railway transportation of low-level radioactive and hazardous chemical wastes: Application of the /open quotes/Maximum Credible Accident/close quotes/ concept
The maximum credible accident (MCA) approach to accident analysis places an upper bound on the potential adverse effects of a proposed action by using conservative but simplifying assumptions. It is often used when data are lacking to support a more realistic scenario or when MCA calculations result in acceptable consequences. The MCA approach can also be combined with realistic scenarios to assess potential adverse effects. This report presents a guide for the preparation of transportation accident analyses based on the use of the MCA concept. Rail transportation of contaminated wastes is used as an example. The example is the analysis of the environmental impact of the potential derailment of a train transporting a large shipment of wastes. The shipment is assumed to be contaminated with polychlorinated biphenyls and low-level radioactivities of uranium and technetium. The train is assumed to plunge into a river used as a source of drinking water. The conclusions from the example accident analysis are based on the calculation of the number of foreseeable premature cancer deaths the might result as a consequence of this accident. These calculations are presented, and the reference material forming the basis for all assumptions and calculations is also provided.
Date:
September 1, 1988
Creator:
Ricci, E. & McLean, R.B.
Object Type:
Report
System:
The UNT Digital Library
Added mass for plates partially submerged in water
Added mass values for plates partially submerged in water are obtained from a series of experiments. Both solid and perforated plates are tested. Each plate is circular and is constrained to move as a piston in a horizontal cylindrical container. Water flow past the perimeter of a plate is controlled by the narrow gap between the container and the edges of the plate. The perforated plate has an equilateral triangular pitch pattern of circular holes. The plate vibrates as a rigid mass on a flexible suspension system. The plate excitation is produced with an impact hammer, although shaker excitation is used to confirm natural frequencies. The natural frequency of the plate is measured for seven water levels in the container ranging from empty to full. For each water level, added mass is computed using the ratio of the natural frequency in air to the natural frequency in water. The added mass for fully submerged plates is compared to published experimental and theoretical results.
Date:
September 1, 1988
Creator:
Lieb, B. W.; Jacala, A. P. & Glasser, R. P.
Object Type:
Report
System:
The UNT Digital Library
The Albany News (Albany, Tex.), Vol. 113, No. 12, Ed. 1 Thursday, September 1, 1988
Weekly newspaper from Albany, Texas that includes local, county, and state news along with extensive advertising.
Date:
September 1, 1988
Creator:
Lucas, Donnie A.
Object Type:
Newspaper
System:
The Portal to Texas History
An Alternative Injection Scheme for Heavy Ions into RHIC
This report is about an Alternative Injection Scheme for Heavy Ions into RHIC
Date:
September 1, 1988
Creator:
J., Rhoades-Brown M.
Object Type:
Report
System:
The UNT Digital Library
The Alto Herald and The Wells News 'N Views (Alto, Tex.), Vol. 93, No. 17, Ed. 1 Thursday, September 1, 1988
Weekly newspaper from Alto, Texas that includes local, state, and national news along with extensive advertising.
Date:
September 1, 1988
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Altus Times (Altus, Okla.), Vol. 66, No. 209, Ed. 1 Thursday, September 1, 1988
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
September 1, 1988
Creator:
Lomenick, Rick
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Amplitude and phase detector for radio frequency measurements
A module has been designed that may be used to demodulate amplitude and phase information in radio frequency systems. This design has been used on PLT and is currently in use on TFTR. 8 figs.
Date:
September 1, 1988
Creator:
Cutsogeorge, G.
Object Type:
Report
System:
The UNT Digital Library
The AMS (Accelerator Mass Spectrometer) program at LLNL
Livermore will have an operational Accelerator Mass Spectrometer (AMS) by mid-1989 as part of its new Multi-user Tandem Laboratory. The spectrometer was designed primarily for applications in archaeology and the geosciences and was co-funded by the University of California Regents. Radiological control for personnel protection, ion sources and injection systems, the tandem and all beam handling hardware are operated with a distributed processor computer control system. The Tandem is the former University of Washington injector FN which has been upgraded with Dowlish tubes, pelletron charging and SF/sub 6/ gas. Design goals for the AMS system, computer aided operation, automated measurement capability, initial results and some of our intended applications will be presented. 5 refs., 2 figs.
Date:
September 1, 1988
Creator:
Proctor, I.D.
Object Type:
Article
System:
The UNT Digital Library
ANSYS program and re-validation of the thermal analysis of the Cornell silicon crystal
The main thrust of the present study has been to (a) explore the thermal analysis potentials of the ANSYS program in solving thermal hydraulic problems in the APS beamline design, (b) compare the ANSYS results with those obtained by THTB for a specific test crystal, and (c) obtain some cost benchmarks for the ANSYS program. On the basis of a limited number of test runs for the silicon crystal problem, conclusions can be drawn that (a) except for conduction problems with simple boundary conditions the utility of ANSYS for solving a variety of three-dimensional thermal hydraulic problems is at best limited, (b) in comparison with THTB program, ANSYS requires a more detailed modeling (with increasing computation time) for comparably accurate results, and (c) no firm statement regarding the cost factor can be made at this time although the ANSYS program appears to be more expensive than any other code they have used so far.
Date:
September 1, 1988
Creator:
Khounsary, A. & Kuzay, T.
Object Type:
Report
System:
The UNT Digital Library
The Application of Position-Sensitive Phoswich Detectors for Low-Mass Fragment Detection in an Array Environment
Large solid angle position-sensitive phoswich detectors have been constructed to replace smaller units in an array for detecting medium mass fragments (Z less than or equal to 15) in nuclear experiments. The position information was obtained from a time analysis method. 5 refs., 9 figs.
Date:
September 1, 1988
Creator:
Chan, Y.; Chavez, E.; Dacal, A.; Gazes, S.; Harmon, B. A.; Plagnol, E. et al.
Object Type:
Article
System:
The UNT Digital Library
Archer County News (Archer City, Tex.), No. 35, Ed. 1 Thursday, September 1, 1988
Weekly newspaper from Archer City, Texas that includes local, state, and national news along with advertising.
Date:
September 1, 1988
Creator:
Lobpries, F. Mike & Lobpries, Fran
Object Type:
Newspaper
System:
The Portal to Texas History
Assessment of Westinghouse Hanford Company Methods for Estimating Radionuclide Release From Ground Disposal of Waste Water at the N Reactor Sites
This report summarizes the results of an independent assessment by Golder Associates, Inc. of the methods used by Westinghouse Hanford Company (Westinghouse Hanford) and its predecessors to estimate the annual offsite release of radionuclides from ground disposal of cooling and other process waters from the N Reactor at the Hanford Site. This assessment was performed by evaluating the present and past disposal practices and radionuclide migration data within the context of the hydrology, geology, and physical layout of the N Reactor disposal site. The conclusions and recommendations are based upon the available data and simple analytical calculations. Recommendations are provided for conducting more refined analyses and for continued field data collection in support of estimating annual offsite releases. Recommendations are also provided for simple operational and structural measures that should reduce the quantities of radionuclides leaving the site. 5 refs., 9 figs., 1 tab.
Date:
September 1, 1988
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
The Bastrop Advertiser and County News (Bastrop, Tex.), Vol. 135, No. 53, Ed. 1 Thursday, September 1, 1988
Semi-weekly newspaper from Bastrop, Texas that includes local, state and national news along with extensive advertising.
Date:
September 1, 1988
Creator:
McAuley, Davis
Object Type:
Newspaper
System:
The Portal to Texas History
The Baytown Sun (Baytown, Tex.), Vol. 66, No. 262, Ed. 1 Thursday, September 1, 1988
Daily newspaper from Baytown, Texas that includes local, state, and national news along with advertising.
Date:
September 1, 1988
Creator:
Brown, Leon
Object Type:
Newspaper
System:
The Portal to Texas History
Beam determination of quadrupole misalignments and beam position monitor biases in the SLC linac
Misalignments of magnetic quadrupoles and biases in beam position monitors (BPMs) in the Stanford Linear Collider (SLC) linac can lead to a situation in which the beam is off-center in the disk-loaded waveguide accelerator structure. The off-center beam produces wakefields which can limit SLC performance by causing unacceptably large emittance growth. We present a general method for determining quadrupole misalignments and BPM biases in the SLC linac by using beam trajectory measurements. The method utilizes both electron and positron beams on opposite rf cycles in the same linac lattice to determine simultaneously magnetic quadrupole misalignments and BPM biases. The two-beam trajectory data may be acquired without interrupting SLC colliding beam operations. 2 refs., 5 figs.
Date:
September 1, 1988
Creator:
Lavine, T. L.; Seeman, J. T.; Atwood, W. B.; Himel, T. M.; Petersen, A. & Adolphsen, C. E.
Object Type:
Article
System:
The UNT Digital Library
Beam Position Monitor for RHIC
This report addresses the beam position monitor for RHIC.
Date:
September 1, 1988
Creator:
J., Claus
Object Type:
Report
System:
The UNT Digital Library
The Big Lake Wildcat (Big Lake, Tex.), Vol. 63, No. 35, Ed. 1 Thursday, September 1, 1988
Weekly newspaper from Big Lake, Texas that includes local, state and national news along with advertising.
Date:
September 1, 1988
Creator:
Werst, David
Object Type:
Newspaper
System:
The Portal to Texas History
The Bogata News (Bogata, Tex.), Vol. 77, No. 47, Ed. 1 Thursday, September 1, 1988
Weekly newspaper from Bogata, Texas that includes local, state, and national news along with advertising.
Date:
September 1, 1988
Creator:
Nichols, Nanalee & Nichols, Thomas
Object Type:
Newspaper
System:
The Portal to Texas History
A brief status report on the SLAC Linear Collider (SLC)
Some aspects of SLC operation and running conditions in 1988 are discussed. 4 refs., 3 figs., 1 tab.
Date:
September 1, 1988
Creator:
Goldhaber, G.
Object Type:
Article
System:
The UNT Digital Library
Burleson Star (Burleson, Tex.), Vol. 23, No. 94, Ed. 1 Thursday, September 1, 1988
Semi-weekly newspaper from Burleson, Texas that includes local, state, and national news along with advertising.
Date:
September 1, 1988
Creator:
Moody, James
Object Type:
Newspaper
System:
The Portal to Texas History
The Canadian experimental HT release of June 10, 1987, US measurements
In June 1987, an experiment was performed at the Chalk River Nuclear Laboratories in Ontario, Canada, to study the oxidation of elemental tritium (HT) released to the environment. The experiment involved a 30-minute release of 3.54 TBq (95.7 Ci)of HT to the atmosphere at an elevation of one meter. Scientists from six countries participated in the experiment. The air measurements showed HT concentrations downwind of the release in general agreement with classical atmospheric diffusion (Gaussian) up to the maximum distance measured (400 m). The HTO/HT ratios were shown to slowly increase downwind (approx. 4 x 10/sup /minus/5/ at 50 m to almost 10/sup /minus/3/ at 400 m) as conversion of HT took place. After the release, HTO concentrations in the atmosphere remained elevated. Vegetation samples were also taken since the vegetation and associated soil system have been implicated in the oxidation of HT. Freeze-dried water from vegetation samples was found to be low in HTO immediately after the release suggesting a low direct uptake of HTO in air by vegetation. The tritiated water concentration increased during the first day, peaking during the second day (about 15--30 kBq/L of water at 50 m from the source), and decreasing by the end …
Date:
September 1, 1988
Creator:
Jalbert, R. A. & Murphy, C. E.
Object Type:
Report
System:
The UNT Digital Library
The Canadian Record (Canadian, Tex.), Vol. 98, No. 35, Ed. 1 Thursday, September 1, 1988
Weekly newspaper from Canadian, Texas that includes local, state and national news along with extensive advertising.
Date:
September 1, 1988
Creator:
Ezzell, Ben & Ezzell, Nancy
Object Type:
Newspaper
System:
The Portal to Texas History