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Electron beam loss assumptions for ELI-NPMEGa-ray radioprotection analysis (open access)

Electron beam loss assumptions for ELI-NPMEGa-ray radioprotection analysis

The ELI-NP project is now working on the design of their conventional facility. Dr. Gheorghe Cata-Danil recently requested that I provide them with information on the location and amount of electron-beam loss in the MEGa-ray source they have proposed for ELI-NP. This memo is intended to document that information, for transmission to ELI-NP. The ELI-NP MEGa-ray source, as presently proposed, consists of two x-band accelerator sections separated by a large chicane, as show in figure 1. The basic parameters of the machine that are pertinent for specifying the radiation source terms are shown in table 1. These are the parameters of the intentionall-produced photobeam. In addition to the photobeam, the electron gun and accelerator will produce 'dark current' that originates throughout the RF structures (that is, distributed along the accelerator axis) and therefore has a distribution of energy below the energy of the photobeam. Because it is emitted from surfaces inside the RF structures, much of it is not transported through the accelerator and is lost in the accelerator RF structures. A large fraction of the total dark current is produced in the photogun and lost at the entrance of the 1st accelerator RF structure. Important sources of radiation during …
Date: October 6, 2011
Creator: Deis, G A
Object Type: Report
System: The UNT Digital Library
DETERMINATION OF HLW GLASS MELT RATE USING X-RAY COMPUTED TOMOGRAPHY (open access)

DETERMINATION OF HLW GLASS MELT RATE USING X-RAY COMPUTED TOMOGRAPHY

The purpose of the high-level waste (HLW) glass melt rate study is two-fold: (1) to gain a better understanding of the impact of feed chemistry on melt rate through bench-scale testing, and (2) to develop a predictive tool for melt rate in support of the on-going frit development efforts for the Defense Waste Processing Facility (DWPF). In particular, the focus is on predicting relative melt rates, not the absolute melt rates, of various HLW glass formulations solely based on feed chemistry, i.e., the chemistry of both waste and glass-forming frit for DWPF. Critical to the successful melt rate modeling is the accurate determination of the melting rates of various HLW glass formulations. The baseline procedure being used at the Savannah River National Laboratory (SRNL) is to; (1) heat a 4 inch-diameter stainless steel beaker containing a mixture of dried sludge and frit in a furnace for a preset period of time, (2) section the cooled beaker along its diameter, and (3) measure the average glass height across the sectioned face using a ruler. As illustrated in Figure 1-1, the glass height is measured for each of the 16 horizontal segments up to the red lines where relatively large-sized bubbles begin …
Date: October 6, 2011
Creator: Choi, A.; Miller, D. & Immel, D.
Object Type: Report
System: The UNT Digital Library
US Renewable Futures in the GCAM (open access)

US Renewable Futures in the GCAM

This project examines renewable energy deployment in the United States using a version of the GCAM integrated assessment model with detailed a representation of renewables, the GCAM-RE. Electricity generation was modeled in four generation segments and 12-subregions. This level of regional and sectoral detail allows a more explicit representation of renewable energy generation. Wind, solar thermal power, and central solar PV plants are implemented in explicit resource classes with new intermittency parameterizations appropriate for each technology. A scenario analysis examines a range of assumptions for technology characteristics, climate policy, and long-distance transmission. We find that renewable generation levels grow over the century in all scenarios. As expected, renewable generation increases with lower renewable technology costs, more stringent climate policy, and if alternative low-carbon technology are not available. The availability of long distance transmission lowers policy costs and changes the renewable generation mix.
Date: October 6, 2011
Creator: Smith, Steven J.; Mizrahi, Andrew H.; Karas, Joseph F. & Nathan, Mayda
Object Type: Report
System: The UNT Digital Library
Report on the workshop "Decay spectroscopy at CARIBU: advanced fuel cycle applications, nuclear structure and astrophysics". 14-16 April 2011, Argonne National Laboratory, USA. (open access)

Report on the workshop "Decay spectroscopy at CARIBU: advanced fuel cycle applications, nuclear structure and astrophysics". 14-16 April 2011, Argonne National Laboratory, USA.

A workshop on 'Decay Spectroscopy at CARIBU: Advanced Fuel Cycle Applications, Nuclear Structure and Astrophysics' will be held at Argonne National Laboratory on April 14-16, 2011. The aim of the workshop is to discuss opportunities for decay studies at the Californium Rare Isotope Breeder Upgrade (CARIBU) of the ATLAS facility with emphasis on advanced fuel cycle (AFC) applications, nuclear structure and astrophysics research. The workshop will consist of review and contributed talks. Presentations by members of the local groups, outlining the status of relevant in-house projects and availabile equipment, will also be organized. time will also be set aside to discuss and develop working collaborations for future decay studies at CARIBU. Topics of interest include: (1) Decay data of relevance to AFC applications with emphasis on reactor decay heat; (2) Discrete high-resolution gamma-ray spectroscopy following radioactive decya and related topics; (3) Calorimetric studies of neutron-rich fission framgents using Total ABsorption Gamma-Ray Spectrometry (TAGS) technique; (4) Beta-delayed neutron emissions and related topics; and (5) Decay data needs for nuclear astrophysics.
Date: October 6, 2011
Creator: Kondev, F.; Carpenter, M. P.; Chowdhury, P.; Clark, J. A.; Lister, C. J.; Nichols, A. L. et al.
Object Type: Report
System: The UNT Digital Library
Direct observation of two-step crystallization in nanoparticle superlattice formation (open access)

Direct observation of two-step crystallization in nanoparticle superlattice formation

Direct imaging of nanoparticle solutions by liquid phase transmission electron microscopy has enabled unique in-situ studies of nanoparticle motion and growth. In the present work, we report on real-time formation of two-dimensional nanoparticle arrays in the very low diffusive limit, where nanoparticles are mainly driven by capillary forces and solvent fluctuations. We find that superlattice formation appears to be segregated into multiple regimes. Initially, the solvent front drags the nanoparticles, condensing them into an amorphous agglomerate. Subsequently, the nanoparticle crystallization into an array is driven by local fluctuations. Following the crystallization event, superlattice growth can also occur via the addition of individual nanoparticles drawn from outlying regions by different solvent fronts. The dragging mechanism is consistent with simulations based on a coarse-grained lattice gas model at the same limit.
Date: October 6, 2011
Creator: Park, Jungwon; Zheng, Haimei; Lee, Won Chul; Geissler, Phillip L.; Rabani, Eran & Alivisatos, A. Paul
Object Type: Article
System: The UNT Digital Library
Refugio County Press (Refugio, Tex.), Vol. 52, No. 9, Ed. 1 Thursday, October 6, 2011 (open access)

Refugio County Press (Refugio, Tex.), Vol. 52, No. 9, Ed. 1 Thursday, October 6, 2011

Weekly newspaper from Refugio, Texas that includes local, state, and national news along with advertising.
Date: October 6, 2011
Creator: Nelson, Kenda
Object Type: Newspaper
System: The Portal to Texas History
Commerce, Justice, Science, and Related Agencies: FY2012 Appropriations (open access)

Commerce, Justice, Science, and Related Agencies: FY2012 Appropriations

This report provides an overview of actions taken by Congress to provide FY2012 appropriations for Commerce, Justice, Science, and Related Agencies(CJS) accounts.
Date: October 6, 2011
Creator: James, Nathan; Williams, Jennifer D. & Sargent, John F., Jr.
Object Type: Report
System: The UNT Digital Library
Dependent Care: Current Tax Benefits and Legislative Issues (open access)

Dependent Care: Current Tax Benefits and Legislative Issues

This report discusses current tax treatment of dependent care expenses under the DCTC and the dependent care assistance programs (DCAP), and issues for Congress in expanding tax benefits for working caregivers (including President Obama's Budget proposal).
Date: October 6, 2011
Creator: Scott, Christine & Mulvey, Janemarie
Object Type: Report
System: The UNT Digital Library
Social Security: Temporary Payroll Tax Reduction in 2011 (open access)

Social Security: Temporary Payroll Tax Reduction in 2011

None
Date: October 6, 2011
Creator: unknown
Object Type: Report
System: The UNT Digital Library
V-22 Osprey Tilt-Rotor Aircraft: Background and Issues for Congress (open access)

V-22 Osprey Tilt-Rotor Aircraft: Background and Issues for Congress

None
Date: October 6, 2011
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Presidential Nominating Process: Current Issues (open access)

Presidential Nominating Process: Current Issues

None
Date: October 6, 2011
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Yemen: Background and U.S. Relations (open access)

Yemen: Background and U.S. Relations

None
Date: October 6, 2011
Creator: Sharp, Jeremy M.
Object Type: Report
System: The UNT Digital Library
Cuba: Issues for the 112th Congress (open access)

Cuba: Issues for the 112th Congress

Cuba remains a one-party communist state with a poor record on human rights. The country's political succession in 2006 from the long-ruling Fidel Castro to his brother Raul was characterized by a remarkable degree of stability. This report contains information on U.S. policy as related to Cuba, legislative action, and more related information.
Date: October 6, 2011
Creator: Sullivan, Mark P.
Object Type: Report
System: The UNT Digital Library
[Funeral Program for Letha Grace Myers, October 6, 2011] (open access)

[Funeral Program for Letha Grace Myers, October 6, 2011]

Funeral program for Letha Grace Myers, born December 17, 1926 and died September 29, 2011. The funeral was held October 6, 2011 at Jacob's Chapel United Methodist Church, officiated by Rev. Howard Mims. Funeral arrangements were made through Lewis Funeral Home and she was buried in Fort Sam Houston National Cemetery in San Antonio, Texas.
Date: October 6, 2011
Creator: unknown
Object Type: Pamphlet
System: The Portal to Texas History
Polk County Enterprise (Livingston, Tex.), Vol. 129, No. 79, Ed. 1 Thursday, October 6, 2011 (open access)

Polk County Enterprise (Livingston, Tex.), Vol. 129, No. 79, Ed. 1 Thursday, October 6, 2011

Semi-weekly newspaper from Livingston, Texas that includes local, state and national news along with advertising.
Date: October 6, 2011
Creator: Reddell, Valerie
Object Type: Newspaper
System: The Portal to Texas History
The Suburbia News (Seagoville, Tex.), Vol. 39, No. 46, Ed. 1 Thursday, October 6, 2011 (open access)

The Suburbia News (Seagoville, Tex.), Vol. 39, No. 46, Ed. 1 Thursday, October 6, 2011

Weekly newspaper from Seagoville, Texas that includes local, state and national news along with advertising.
Date: October 6, 2011
Creator: Radford, Leslie
Object Type: Newspaper
System: The Portal to Texas History
The Albany News (Albany, Tex.), Vol. 136, No. 20, Ed. 1 Thursday, October 6, 2011 (open access)

The Albany News (Albany, Tex.), Vol. 136, No. 20, Ed. 1 Thursday, October 6, 2011

Weekly newspaper from Albany, Texas that includes local, county, and state news along with extensive advertising.
Date: October 6, 2011
Creator: Lucas, Melinda L.
Object Type: Newspaper
System: The Portal to Texas History
Jewish Herald-Voice (Houston, Tex.), Vol. 103, No. 28, Ed. 1 Thursday, October 6, 2011 (open access)

Jewish Herald-Voice (Houston, Tex.), Vol. 103, No. 28, Ed. 1 Thursday, October 6, 2011

Weekly Jewish newspaper from Houston, Texas that includes local, state and national news along with extensive advertising.
Date: October 6, 2011
Creator: Samuels, Jeanne F.
Object Type: Newspaper
System: The Portal to Texas History
The Greensheet (Houston, Tex.), Vol. 42, No. 429, Ed. 1 Thursday, October 6, 2011 (open access)

The Greensheet (Houston, Tex.), Vol. 42, No. 429, Ed. 1 Thursday, October 6, 2011

Free weekly newspaper that includes business and classified advertising.
Date: October 6, 2011
Creator: unknown
Object Type: Newspaper
System: The Portal to Texas History
The Greensheet (Houston, Tex.), Vol. 42, No. 428, Ed. 1 Thursday, October 6, 2011 (open access)

The Greensheet (Houston, Tex.), Vol. 42, No. 428, Ed. 1 Thursday, October 6, 2011

Free weekly newspaper that includes business and classified advertising.
Date: October 6, 2011
Creator: unknown
Object Type: Newspaper
System: The Portal to Texas History
Port Aransas South Jetty (Port Aransas, Tex.), Vol. 42, No. 40, Ed. 1 Thursday, October 6, 2011 (open access)

Port Aransas South Jetty (Port Aransas, Tex.), Vol. 42, No. 40, Ed. 1 Thursday, October 6, 2011

Weekly newspaper from Port Aransas, Texas on Mustang Island that includes local, state and national news along with extensive advertising.
Date: October 6, 2011
Creator: Judson, Mary Henkel
Object Type: Newspaper
System: The Portal to Texas History
The Nocona News (Nocona, Tex.), Vol. 107, No. 19, Ed. 1 Thursday, October 6, 2011 (open access)

The Nocona News (Nocona, Tex.), Vol. 107, No. 19, Ed. 1 Thursday, October 6, 2011

Weekly newspaper from Nocona, Texas that includes local, state, and national news along with advertising.
Date: October 6, 2011
Creator: Mesler, Tracy R. & Mesler, Linda L.
Object Type: Newspaper
System: The Portal to Texas History
The Greensheet (Austin, Tex.), Vol. 34, No. 35, Ed. 1 Thursday, October 6, 2011 (open access)

The Greensheet (Austin, Tex.), Vol. 34, No. 35, Ed. 1 Thursday, October 6, 2011

Free weekly newspaper that includes business and classified advertising.
Date: October 6, 2011
Creator: unknown
Object Type: Newspaper
System: The Portal to Texas History
Greensheet (Houston, Tex.), Vol. 42, No. 427, Ed. 1 Thursday, October 6, 2011 (open access)

Greensheet (Houston, Tex.), Vol. 42, No. 427, Ed. 1 Thursday, October 6, 2011

Free weekly newspaper that includes business and classified advertising.
Date: October 6, 2011
Creator: unknown
Object Type: Newspaper
System: The Portal to Texas History