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  Partner: UNT Libraries Government Documents Department
 Decade: 1990-1999
THE 15 LAYER SILICON DRIFT DETECTOR TRACKER IN EXPERIMENT 896.

THE 15 LAYER SILICON DRIFT DETECTOR TRACKER IN EXPERIMENT 896.

Date: November 8, 1998
Creator: PANDY,S.U.
Description: Large linear silicon drift detectors have been developed and are in production for use in several experiments. Recently 15 detectors were used as a tracking device in BNL-AGS heavy ion experiment (E896). The detectors were successfully operated in a 6.2 T magnetic field. The behavior of the detectors, such as drift uniformity, resolution, and charge collection efficiency are presented. The effect of the environment on the detector performance is discussed. Some results from the experimental run are presented. The detectors performed well in an experimental environment. This is the first tracking application of these detectors.
Contributing Partner: UNT Libraries Government Documents Department
60 kilograms high explosive containment with multi-diagnostic capability

60 kilograms high explosive containment with multi-diagnostic capability

Date: September 17, 1998
Creator: Simmons, L F
Description: In anticipation of increasingly stringent environmental regulations, Lawrence Livermore National Laboratory (LLNL) proposes to construct a 60 kilogram (kg) firing chamber to provide blast-effects containment for most of its open-air, high explosives, firing operations. Even though these operations are within current environmental limits, containment of the blast effects and hazardous debris will further drastically reduce emissions to the environment and minimize the generated hazardous waste.
Contributing Partner: UNT Libraries Government Documents Department
94-1 Research and Development Project Lead laboratory support. Status report, October 1--December 31, 1995

94-1 Research and Development Project Lead laboratory support. Status report, October 1--December 31, 1995

Date: May 1, 1996
Creator: Dinehart, M.
Description: This is a quarterly progress report of the 94-1 Research and Development Lead Laboratory Support Technical Program Plan for the first quarter of FY 1996. The report provides details concerning descriptions, DOE-complex-wide material stabilization technology needs, scientific background and approach, progress, benefits to the DOE complex, and collaborations for selected subprojects. An executive summary and report on end-of-quarter spending is included.
Contributing Partner: UNT Libraries Government Documents Department
100-FR-3 groundwater/soil gas supplemental limited field investigation report

100-FR-3 groundwater/soil gas supplemental limited field investigation report

Date: April 1, 1996
Creator: unknown
Description: In 1993, a Limited Field Investigation (LFI) was conducted for the 100-FR-3 Operable Unit which identified trichloroethylene (TCE) as a contaminant of potential concern (COPC) (DOE-RL 1994). In groundwater samples collected for the LFI, TCE was detected in well 199-177-1 at a concentration exceeding the U.S. Environmental Protection Agency (EPA) maximum contaminant level (5 {mu}g/L) and Washington State groundwater criteria (3 {mu}g/L). With the concurrence of the EPA and the Washington State Department of Ecology (Ecology), a supplemental LFI was conducted to determine the extent and potential source of TCE groundwater contamination associated with the 100-FR-3 Operable Unit. This report summarizes the activities and results of the groundwater/soil gas supplemental LFI for the 100-FR-3 Operable Unit. The primary objective of this investigation was to assess the lateral distribution of TCE in shallow (3 to 5 ft below the water table) groundwater associated with the 100-FR-3 Operable Unit. The second objective was to assess soil gas (3 to 5 concentrations in the study area in an attempt to identify potential sources of TCE and develop a correlation between soil gas and groundwater concentrations). Finally, the third objective of the investigation was to refine the site conceptual model.
Contributing Partner: UNT Libraries Government Documents Department
A 100 ps gated x-ray spectrometer

A 100 ps gated x-ray spectrometer

Date: September 1, 1995
Creator: Walsh, P.J.; Blake, R.L.; Caldwell, S.; Hockaday, M.; Chrien, R. & Smith, R.C.
Description: Material opacities are of interest in many fields. We have developed a Bragg reflection spectrometer that is gated for imaging samples in a laser heated environment for opacity measurement. A micro-channel plate is coated with a photocathode material and a fast pulse is launched across it. Electrons are converted to photons in a phosphor and recorded on film. Optical gate pulse widths of 100 ps are achieved. Some optical pulse width and sensitivity enhancements are noted at launch and termination. Events of interest are 200 ps long. The framing window is approximately 250 ps in length. Timing jitter is a problem. The instrument timing networks have been examined, and the source of jitter is still unknown. Timing to 50 ps resolution is desired. Close in proximity to the laser-driven event leads to complications in shielding from hard x-rays, hot electrons and shock-driven damage. High Z materials provide shielding from hard x-rays. Magnets screen out hot electrons produced by laser-matter interactions Filters provide energy fiducials. PCD`s provide high resolution timing measurements. Data is recorded on film in a specially designed film pack. The instrument is designed to be used in the NOVA Laser Facility at Lawrence Livermore National Laboratory.
Contributing Partner: UNT Libraries Government Documents Department
105-KW Sandfilter Backwash Pit sludge volume calculation

105-KW Sandfilter Backwash Pit sludge volume calculation

Date: February 10, 1995
Creator: Dodd, E.N. Jr.
Description: The volume of sludge contained in the 100-KW Sandfilter Backwash Pit (SFBWP) was calculated from depth measurements of the sludge, pit dimension measurements and analysis of video tape recordings taken by an underwater camera. The term sludge as used in this report is any combination of sand, sediment, or corrosion products visible in the SFBWP area. This work was performed to determine baseline volume for use in determination of quantities of uranium and plutonium deposited in the pit from sandfilter backwashes. The SFBWP has three areas where sludge is deposited: (1) the main pit floor, (2) the transfer channel floor, and (3) the surfaces and structures in the SFBWP. The depths of sludge and the uniformity of deposition varies significantly between these three areas. As a result, each of the areas was evaluated separately. The total volume of sludge determined was 3.75 M{sup 3} (132.2 ft{sup 3}).
Contributing Partner: UNT Libraries Government Documents Department
105-N basin sediment disposition phase-two sampling and analysis plan

105-N basin sediment disposition phase-two sampling and analysis plan

Date: December 31, 1997
Creator: unknown
Description: The sampling and analysis plan for Phase 2 of the 105-N Basin sediment disposition task defines the sampling and analytical activities that will be performed to support characterization of the sediment and selection of an appropriate sediment disposal option.
Contributing Partner: UNT Libraries Government Documents Department
120-D-1 (100-D) ponds training plan

120-D-1 (100-D) ponds training plan

Date: December 31, 1997
Creator: Mitchem, G. B.
Description: This is the Environmental Restoration Contractor Team training plan for the 100-D Ponds treatment, storage, and disposal unit. This plan is intended to meet the requirements of WAC 173-303-330 and the Hanford Dangerous Waste Permit. The WAC 173-303-330(1)(d)(ii, v, vi) requires that personnel be familiar, where applicable, with waste feed cut-off systems, proper responses to groundwater contamination incidents, shutdown of operations, response to fire or explosion, and other process operation activities.
Contributing Partner: UNT Libraries Government Documents Department
183-H Basin sludge treatability test report

183-H Basin sludge treatability test report

Date: December 31, 1995
Creator: Biyani, R.K.
Description: This document presents the results from the treatability testing of a 1-kg sample of 183-H Basin sludge. Compressive strength measurements, Toxic Characteristic Leach Procedure, and a modified ANSI 16.1 leach test were conducted
Contributing Partner: UNT Libraries Government Documents Department
183-H Solar Evaporation Basins PostClosure Plan

183-H Solar Evaporation Basins PostClosure Plan

Date: December 31, 1997
Creator: Badden, J.W.
Description: The 183-H Solar Evaporation Basins (183-H) have certified closure under a modified closure option available in the Hanford Facility Dangerous Waste Permit under Condition II.K.3. The following information contains a description of the unit, past closure actions, and postclosure care requirements subject to compliance under the Permit. Corrective actions required for dangerous waste constituents remaining at 183-H will occur in conjunction with Comprehensive Environmental Response, Compensation, and Liability Act remedial actions for the 100-HR-1 Source Operable Unit and the 100-HR-3 Groundwater Operable Unit
Contributing Partner: UNT Libraries Government Documents Department