P-Type Silicon Strip Sensors for the new CMS Tracker at HL-L-HC

Abstract: The upgrade of the LHC to the High-Luminosity LHC (HL-LHC) is expected to increase the LHC design luminosity by an order of magnitude. This will require silicon tracking detectors with a significantly higher radiation hardness. The CMS Tracker Collaboration has conducted an irradiation and measurement campaign to identify suitable silicon sensor materials and strip designs for the future outer tracker at the CMS experiment. Based on these results, the collaboration has chosen to use n-in-p type silicon sensors and focus further investigations on the optimization of that sensor type

Evaluation of coatings applied over corroded structural steel surfaces (FHWA-OK-90-03) 2722

Five coating systems were evaluated for use over corroded structural steel surfaces. The coatings were applied over both clean (non-corroded) steel panels and panels pre-corroded in a salt fog chamber. The coated panels were then exposed for 50 days in the salt fog chamber. Visual observations were made on a daily basis to obtain data on blister size, blister frequency, rust rating, and scribe rating. The coatings tested were: ( 1 ) Freecom, Corroseal FOC 54/55, an epoxy one-coat system, ( 2) DuPont, 25P/Imron, an epoxy base coat with a polyurethane top coat, ( 3 ) Praxis, Prax-Ten, a penetrant base coat and a concentrate top coat of metal alkyl sulfonates, (4) Tenemec, series 135/74, an epoxy base coat with a polyurethane top coat, and ( 5) Black Gold, a hydrocarbon sealer base coat with an aluminum flake top coat in a hydrocarbon and solvent binder. The best performing coating was the one supplied by DuPont. The Tnemec coating also performed well and ranked second. The Praxis coating ranked third. The poorest performing coating was Black Gold. The Corroseal coating performed better than Black Gold on the pre-corroded panels, but disbanded from the clean surfaces before the end of the testing period.Final Report July 1988-December 1989N

Parameters affecting radionuclide migration in geologic media

Adsorption of several nuclides (Sr, Tc, Cs, Ba, Ce, Eu) on tuff, monzonite, and argillite was studied experimentally. 3 tables. (DLC

Research and development related to the Nevada Nuclear Waste Storage Investigations. Progress report, January 1-March 31, 1981

Storage of radwaste in tuff was studied. Adsorption experiments were conducted with {sup 85}Sr, {sup 95}Tc, {sup 137}Cs, {sup 133}Ba, and {sup 152}Eu. The geochemistry and mineralogy-petrology of tuff were studied. Organic and inorganic Eh buffers were investigated. Rock physics studies were also conducted. (DLC

Preliminary considerations concerning actinide solubilities

Work at the Los Alamos Scientific Laboratory on the fundamental solution chemistry of the actinides has thus far been confined to preliminary considerations of the problems involved in developing an understanding of the precipitation and dissolution behavior of actinide compounds under environmental conditions. Attempts have been made to calculate solubility as a function of Eh and pH using the appropriate thermodynamic data; results have been presented in terms of contour maps showing lines of constant solubility as a function of Eh and pH. Possible methods of control of the redox potential of rock-groundwater systems by the use of Eh buffers (redox couples) is presented

Manufacturing In Decline? A Matter Of Definition

This paper offers a new approach to the definition of manufacturing activities, placing them in a broader framework to capture the dynamics of manufacturing in the economy. After discussing why in many cases it may bc appropriate to consider producer services and tnanttfacturing industries together, the paper analyzes the development of manufacturing and producer service industries in the United States. We examine the factors leading to the growth of producer services, concluding that unbundling, the shift of some activities (such as legal, accounting, and data processing services) from manufacturing to producer services industries, is an important explanation for this growth. Finally, we discuss the relationship between manufacturing and producer services. Our analysis, based on a broader definition of manufacturing, shows that over the last two decades the U.S. manufacturing base has declined only slightly rather than radically as suggested in many studies.Manufacturing, Producer services, U. S. economy JEL Classification: L0, L6,