LCLS-II New Instruments Workshops Report (open access)

LCLS-II New Instruments Workshops Report

The LCLS-II New Instruments workshops chaired by Phil Heimann and Jerry Hastings were held on March 19-22, 2012 at the SLAC National Accelerator Laboratory. The goal of the workshops was to identify the most exciting science and corresponding parameters which will help define the LCLS-II instrumentation. This report gives a synopsis of the proposed investigations and an account of the workshop. Scientists from around the world have provided short descriptions of the scientific opportunities they envision at LCLS-II. The workshops focused on four broadly defined science areas: biology, materials sciences, chemistry and atomic, molecular and optical physics (AMO). Below we summarize the identified science opportunities in the four areas. The frontiers of structural biology lie in solving the structures of large macromolecular biological systems. Most large protein assemblies are inherently difficult to crystallize due to their numerous degrees of freedom. Serial femtosecond protein nanocrystallography, using the 'diffraction-before-destruction' approach to outrun radiation damage has been very successfully pioneered at LCLS and diffraction patterns were obtained from some of the smallest protein crystals ever. The combination of femtosecond x-ray pulses of high intensity and nanosized protein crystals avoids the radiation damage encountered by conventional x-ray crystallography with focused beams and opens the …
Date: August 8, 2012
Creator: Baradaran, Samira; Bergmann, Uwe; Durr, Herrmann; Gaffney, Kelley; Goldstein, Julia; Guehr, Markus et al.
Object Type: Article
System: The UNT Digital Library
A New Scheme for Stigmatic X-ray Imaging with Large Magnification (open access)

A New Scheme for Stigmatic X-ray Imaging with Large Magnification

This paper describes a new x-ray scheme for stigmatic imaging. The scheme consists of one convex spherically bent crystal and one concave spherically bent crystal. The radii of curvature and Bragg reflecting lattice planes of the two crystals are properly matched to eliminate the astigmatism, so that the conditions for stigmatic imaging are met for a particular wavelength. The magnification is adjustable and solely a function of the two Bragg angles or angles of incidence. Although the choice of Bragg angles is constrained by the availability of crystals, this is not a severe limitation for the imaging of plasmas, since a particular wavelength can be selected from the bremsstrahlung continuum. The working principle of this imaging scheme has been verified with visible light. Further tests with x rays are planned for the near future. 2012 American Institute of Physics
Date: August 8, 2012
Creator: Bitter, M.; Delgado-Aprico, L. F.; Pablant, N. A.; Scott, S.; Jones, F.; Beiersdorfer, P. et al.
Object Type: Report
System: The UNT Digital Library
Annual Site Environmental Report for Calendar Years 2009 to 2010 (open access)

Annual Site Environmental Report for Calendar Years 2009 to 2010

This report presents the results of environmental activities and monitoring programs at the Princeton Plasma Physics Laboratory (PPPL) for Calendar Years 2009-2010. The report provides the U.S. Department of Energy (DOE) and the public with information on the level of radioactive and non-radioactive pollutants, if any, that are released into the environment as a result of PPPL operations. The report also summarizes environmental initiatives, assessments, and programs that were undertaken in 2009-2010. The objective of the Site Environmental Report is to document PPPL's efforts to protect the public's health and the environment through its environmental protection, safety, and health programs. __________________________________________________
Date: August 8, 2012
Creator: Finley, Virginia
Object Type: Report
System: The UNT Digital Library
A Compact UV Timing Fiducial System for use with x-Ray Streak Cameras at NIF (open access)

A Compact UV Timing Fiducial System for use with x-Ray Streak Cameras at NIF

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Date: August 8, 2012
Creator: Homoelle, D.; Bowers, M.; Browning, D.; Burns, S.; Golick, B.; Erbert, G. et al.
Object Type: Article
System: The UNT Digital Library
THORs Power Method for Hydrokinetic Devices - Final Report (open access)

THORs Power Method for Hydrokinetic Devices - Final Report

Ocean current energy represents a vast untapped source of renewable energy that exists on the outer continental shelf areas of the 5 major continents. Ocean currents are unidirectional in nature and are perpetuated by thermal and salinity sea gradients, as well as coriolis forces imparted from the earth's rotation. This report details THORs Power Method, a breakthrough power control method that can provide dramatic increases to the capacity factor over and above existing marine hydrokinetic (MHK) devices employed in the extraction of energy from ocean currents. THORs Power Method represents a constant speed, variable depth operational method that continually locates the ocean current turbine at a depth at which the rated power of the generator is routinely achieved. Variable depth operation is achieved by using various vertical force effectors, including ballast tanks for variable weight, a hydrodynamic wing for variable lift or down force and drag flaps for variable vehicle drag forces.
Date: August 8, 2012
Creator: Hunt, J. Turner & Rumker, Joel
Object Type: Report
System: The UNT Digital Library
Proceedings of RIKEN BNL Research Center Workshop: New Horizons for Lattice Computations with Chiral Fermions (open access)

Proceedings of RIKEN BNL Research Center Workshop: New Horizons for Lattice Computations with Chiral Fermions

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Date: August 8, 2012
Creator: Izubuchi, T.; Blum, T.; Ishikawa, T. & Soni, A.
Object Type: Report
System: The UNT Digital Library
Finding Motifs in Wind Generation Time Series Data (open access)

Finding Motifs in Wind Generation Time Series Data

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Date: August 8, 2012
Creator: Kamath, C & Fan, Y J
Object Type: Article
System: The UNT Digital Library
Head Erosion with Emittance Growth in PWFA (open access)

Head Erosion with Emittance Growth in PWFA

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Date: August 8, 2012
Creator: Li, S. Z.; Adli, E.; England, R. J.; Frederico, J.; Gessner, S. J.; Hogan, M. J. et al.
Object Type: Article
System: The UNT Digital Library
Development of the bus joint for the ITER Central Solenoid (open access)

Development of the bus joint for the ITER Central Solenoid

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Date: August 8, 2012
Creator: Martovetsky, N. N.; Irick, D. K. & Kenney, S. J.
Object Type: Article
System: The UNT Digital Library
U.S. National Science Foundation: An Overview (open access)

U.S. National Science Foundation: An Overview

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Date: August 8, 2012
Creator: Matthews, Christine M.
Object Type: Report
System: The UNT Digital Library
DOE Basic Overview of Occupational Radiation Exposure (open access)

DOE Basic Overview of Occupational Radiation Exposure

This pamphlet focusses on two HSS activities that help ensure radiation exposures are accurately assessed and recorded, namely: 1) the quality and accuracy of occupational radiation exposure monitoring, and 2) the recording, reporting, analysis, and dissemination of the monitoring results. It is intended to provide a short summary of two specific HSS programs that aid in the oversight of radiation protection activities at DOE. The Department of Energy Laboratory Accreditation Program (DOELAP) is in place to ensure that radiation exposure monitoring at all DOE sites is precise and accurate, and conforms to national and international performance and quality assurance standards. The DOE Radiation Exposure Monitoring Systems (REMS) program provides for the collection, analysis, and dissemination of occupational radiation exposure information. The annual REMS report is a valuable tool for managing radiological safety programs and for developing policies to protect individuals from occupational exposure to radiation. In tandem, these programs provide DOE management and workers an assurance that occupational radiation exposures are accurately measured, analyzed, and reported.
Date: August 8, 2012
Creator: Oak Ridge Associated Universities
Object Type: Pamphlet
System: The UNT Digital Library
Positivity Preservation and Advection Algorithm Tests for Edge Plasma Turbulence (open access)

Positivity Preservation and Advection Algorithm Tests for Edge Plasma Turbulence

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Date: August 8, 2012
Creator: Peterson, J L & Hammett, G W
Object Type: Article
System: The UNT Digital Library
Tunable Diode Laser Absorption Spectroscopy Using a Multi-Pass White Cell for O2 Detection (open access)

Tunable Diode Laser Absorption Spectroscopy Using a Multi-Pass White Cell for O2 Detection

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Date: August 8, 2012
Creator: Raval, M.; Bora, M.; McCarrick, J. & Bond, T.
Object Type: Report
System: The UNT Digital Library
Notes from the Unit Commitment Linear Programming Project (open access)

Notes from the Unit Commitment Linear Programming Project

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Date: August 8, 2012
Creator: Rountree, B. L.
Object Type: Report
System: The UNT Digital Library
Computer experiments on the onset of turbulence (open access)

Computer experiments on the onset of turbulence

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Date: August 8, 2012
Creator: Weisgraber, T H & Alder, B J
Object Type: Article
System: The UNT Digital Library
Comptroller Susan Combs Distributes $632 Million in Monthly Sales Tax Revenue to Local Governments (open access)

Comptroller Susan Combs Distributes $632 Million in Monthly Sales Tax Revenue to Local Governments

This document contains information on sales tax revenue and allocation in Texas counties as well as related data charts.
Date: August 8, 2012
Creator: Willis, Lauren
Object Type: Report
System: The Portal to Texas History
Astatine-211 Radiochemistry: The Development of Methodologies for High Activity Level Radiosynthesis (open access)

Astatine-211 Radiochemistry: The Development of Methodologies for High Activity Level Radiosynthesis

Targeted radionuclide therapy is emerging as a viable approach for cancer treatment because of its potential for delivering curative doses of radiation to malignant cell populations while sparing normal tissues. Alpha particles such as those emitted by 211At are particularly attractive for this purpose because of their short path length in tissue and high energy, making them highly effective in killing cancer cells. The current impact of targeted radiotherapy in the clinical domain remains limited despite the fact that in many cases, potentially useful molecular targets and labeled compounds have already been identified. Unfortunately, putting these concepts into practice has been impeded by limitations in radiochemistry methodologies. A critical problem is that the synthesis of therapeutic radiopharmaceuticals provides additional challenges in comparison to diagnostic reagents because of the need to perform radio-synthesis at high levels of radioactivity. This is particularly important for {alpha}-particle emitters such as 211At because they deposit large amounts of energy in a highly focal manner. The overall objective of this project is to develop convenient and reproducible radiochemical methodologies for the radiohalogenation of molecules with the {alpha}-particle emitter 211At at the radioactivity levels needed for clinical studies. Our goal is to address two problems in astatine …
Date: August 8, 2012
Creator: Zalutsky, Michael R.
Object Type: Report
System: The UNT Digital Library
Medicare’s Skilled Nursing Facility Primer: Benefit Basics and Issues (open access)

Medicare’s Skilled Nursing Facility Primer: Benefit Basics and Issues

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Date: August 8, 2012
Creator: unknown
Object Type: Report
System: The UNT Digital Library
The Speech or Debate Clause: Constitutional Background and Recent Developments (open access)

The Speech or Debate Clause: Constitutional Background and Recent Developments

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Date: August 8, 2012
Creator: unknown
Object Type: Report
System: The UNT Digital Library