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3(omega) Damage: Growth Mitigation

Description: The design of high power UV laser systems is limited to a large extent by the laser-initiated damage performance of transmissive fused silica optical components. The 3{omega} (i.e., the third harmonic of the primary laser frequency) damage growth mitigation LDRD effort focused on understanding and reducing the rapid growth of laser-initiated surface damage on fused silica optics. Laser-initiated damage can be discussed in terms of two key issues: damage initiated at some type of precursor and r… more
Date: February 22, 2001
Creator: Kozlowski, M; Demos, S; Wu, Z-L; Wong, J; Penetrante, B & Hrubesh, L
Item Type: Refine your search to only Report
open access

3(omega) Power Balance Procedure on the NIF

Description: This document defines the detailed NIF full system shot procedure to obtain 8% power balance as specified by the SDR002 3.2.1.04. Because the 48 quads of the NIF will be set up over a period of five years, obtaining power balance will naturally be accomplished in two steps. First, as each quad is brought online, the four laser beams within each quad will be tuned by setting the PABTS splitter ratios so that each beam will give the same laser power on target during low energy square pulse shots.… more
Date: January 22, 2001
Creator: Glenzer, S.; Jones, O.; Speck, D. R.; Munro, D.; Lerche, R.; Salmon, T. et al.
Item Type: Refine your search to only Report
open access

3 Plant Radiation Study Interim Report #5- Part II Data on Gamma Shielding of Special Plutonium Samples

Description: The calculation of shielding the thickness for plutonium is complicated by the many different energies represented in the gamma radiation emitted during decay of the plutonium isotopes. Dose rate predictions are also frequently confused by gamma from varying content of fission product impurities in the plutonium, as well as other gamma radiation induced through alpha and neutron particle absorption within the source material or its environment. After assumptions are made for these many factors… more
Date: October 22, 1959
Creator: Moulthrop, H. A.
Item Type: Refine your search to only Report
open access

The 9/11 Commission and a National Counterterrorism Center: Issues and Options for Congress

Description: This report examines a number of issues as Congress considers codification of an NCTC. One issue is whether the centralization remedy the commission has recommended fits the problems associated specifically with the 9/11 intelligence failure, and perhaps more broadly, the systematic maladies affecting the Intelligence Community. There are at least four options for congressional consideration: (1) NCTC with intelligence and operational planning duties, (2) NCTC restricted to an intelligence role… more
Date: October 22, 2004
Creator: Masse, Todd
Item Type: Refine your search to only Report
captions transcript

9-11 Commission Final Report Press Conference

Description: Recording of a press conference held by the National Commission on Terrorist Attacks upon the United States to announce the release of the final report and discuss the findings of the commission.
Date: July 22, 2004
Duration: 1 hour 35 minutes 15 seconds
Creator: National Commission on Terrorist Attacks upon the United States
Item Type: Refine your search to only Video
captions transcript

9-11 Commission Hearing #2, May 22, 2003, Part 1

Description: Recording of the second public hearing held by the National Commission on Terrorist Attacks Upon the United States on May 22, 2003 at the Hart Senate Office Building in Washington, D.C. This hearing addresses four topics, which include the commission mandate and objectives, intelligence oversight and the joint inquiry, affected constituencies, and the state of civil aviation security on September 11th. This section includes the first panel on the commission mandate and objectives, with testimon… more
Date: May 22, 2003
Duration: 52 minutes 43 seconds
Creator: National Commission on Terrorist Attacks upon the United States
Item Type: Refine your search to only Video
captions transcript

9-11 Commission Hearing #2, May 22, 2003, Part 2

Description: Recording of the second public hearing held by the National Commission on Terrorist Attacks upon the United States on May 22, 2003 at the Hart Office Senate Building in Washington, D.C. This hearing addresses four topics, which include the commission mandate and objectives, intelligence oversight and the joint inquiry, affected constituencies, and the state of civil aviation security on September 11th. This section includes the second panel on intelligence oversight and the joint inquiry with t… more
Date: May 22, 2003
Duration: 1 hour 34 minutes 46 seconds
Creator: National Commission on Terrorist Attacks upon the United States
Item Type: Refine your search to only Video
captions transcript

9-11 Commission Hearing #2, May 22, 2003, Part 3

Description: Recording of the second public hearing held by the National Commission on Terrorist Attacks upon the United States on May 22, 2003 at the Hart Senate Office Building in Washington, D.C. This hearing addresses four topics, which include the commission mandate and objectives, intelligence oversight and the joint inquiry, affected constituencies, and the state of civil aviation security on September 11th. This section contains the third panel on affected constituencies with testimony from Senators… more
Date: May 22, 2003
Duration: 1 hour 23 minutes 23 seconds
Creator: National Commission on Terrorist Attacks upon the United States
Item Type: Refine your search to only Video
captions transcript

9-11 Commission Hearing #2, May 22, 2003, Part # 4

Description: Recording of the second public hearing held by the National Commission on Terrorist Attacks upon the United States on May 22, 2003 at the Hart Senate Office Building in Washington, D.C. This hearing addresses four topics, which include the commission mandate and objectives, intelligence oversight and the joint inquiry, affected constituencies, and the state of civil aviation security on September 11th. This section includes the panel on civil aviation security with testimony from representative… more
Date: May 22, 2003
Duration: 2 hours 45 minutes 13 seconds
Creator: National Commission on Terrorist Attacks upon the United States
Item Type: Refine your search to only Video
open access

9/11 Commission Recommendations: A Civil Liberties Oversight Board

Description: From Summary: This report discusses recommendations made by the National Commission on Terrorist Attacks Upon the United States (9/11 Commission) which include: "creation of a board within the executive branch to oversee adherence to guidelines on, and commitment to defend, civil liberties by the federal government."
Date: December 22, 2004
Creator: Relyea, Harold C.
Item Type: Refine your search to only Report
open access

9/11 Commission Recommendations: The Senate Confirmation Process for Presidential Nominees

Description: On July 22, 2004, the National Commission on Terrorist Attacks Upon the United States, known as the 9/11 Commission, issued its final report, detailing the events up to and including the September 11, 2001 terrorist attacks upon the United States. The 9/11 Commission recommended that the Senate adopt rules requiring hearings and votes to confirm or reject national security nominees within 30 days of their submission at the start of each new presidential administration. Implementing the commissi… more
Date: November 22, 2004
Creator: Palmer, Betsy
Item Type: Refine your search to only Report
open access

The 9/11 Commission Report: Final Report of the National Commission on Terrorist Attacks Upon the United States

Description: The official Government edition of the Final Report of the National Commission on Terrorist Attacks Upon the United States (also known as the 9-11 Commission, an independent, bipartisan commission created by congressional legislation and the signature of President George W. Bush in late 2002), provides a full and complete account of the circumstances surrounding the September 11, 2001 terrorist attacks, including preparedness for and the immediate response to the attacks. Provides recommendatio… more
Date: July 22, 2004
Creator: National Commission on Terrorist Attacks upon the United States
Item Type: Refine your search to only Book
open access

12.6 keV Kr K-alpha X-ray Source For High Energy Density Physics Experiments

Description: A high contrast 12.6 keV Kr K{alpha} source has been demonstrated on the petawatt-class Titan laser facility. The contrast ratio (K{alpha} to continuum) is 65, with a competitive ultra short pulse laser to x-ray conversion efficiency of 10{sup -5}. Filtered shadowgraphy indicates that the Kr K{alpha} and K{beta} x-rays are emitted from a roughly 1 x 2 mm emission volume, making this source suitable for area backlighting and scattering. Spectral calculations indicate a typical bulk electron temp… more
Date: April 22, 2008
Creator: Kugland, N.; Constantin, C. G.; Niemann, C.; Neumayer, P.; Chung, H.; Doppner, T. et al.
Item Type: Refine your search to only Article
open access

20-100 keV K(alpha) X-Ray Source Generation by Short Pulse High Intensity Lasers

Description: We are studying the feasibility of utilizing K{alpha} x-ray sources in the range of 20 to 100 keV as a backlighters for imaging various stages of implosions and high areal density planar samples driven by the NIF laser facility. The hard x-ray K{alpha} sources are created by relativistic electron plasma interactions in the target material after a radiation by short pulse high intensity lasers. In order to understand K{alpha} source characteristics such as production efficiency and brightness as… more
Date: August 22, 2003
Creator: Park, H. S.; Koch, J. A.; Landen, O. L.; Phillips, T. W. & Goldsack, T.
Item Type: Refine your search to only Article
open access

S-20 photocathode research activity. Part I

Description: The goal of this activity has been to develop and implement S-20 photocathode processing techniques at Lawrence Livermore National Laboratory (LLNL) in order to study the physical properties of the photocathode films. The present work is the initial phase of a planned activity in understanding cathode fabrication techniques and the optical/electrical characterization of these films.
Date: November 22, 1983
Creator: Gex, F.; Huen, T. & Kalibjian, R.
Item Type: Refine your search to only Report
open access

45-Day safety screen results and final report for Tank 241-SX-113, Auger samples 94-AUG-028 and 95-AUG-029

Description: This document serves as the 45-day report deliverable for tank 241-SX-113 auger samples collected on May 9 and 10, 1995. The samples were extruded, and analyzed by the 222-S Laboratory. Laboratory procedures completed include: differential scanning calorimetry; thermogravimetric analysis; and total alpha analysis. This report incudes the primary safety screening results obtained from the analyses. As the final report, the following are also included: chains of custody; the extrusion logbook; sa… more
Date: June 22, 1995
Creator: Sasaki, L.M.
Item Type: Refine your search to only Report
open access

62-TeV center of mass hadron collider with capability for super bunch beams

Description: A 60 TeV center of mass hadron collider is proposed, which has capability of using Superbunch beam. With Superbunch beam, the luminosity is expected to be increased by a factor of 20, compared with conventional acceleration using RF cavities. This hadron collider will be built in two stages with a low field magnet ring first and a high field magnet ring later in the same tunnel. The low field magnet rig will be built with Pipetron scheme, with 7 TeV and 7 TeV proton beams, making a 14 TeV cente… more
Date: August 22, 2001
Creator: Takayama, Ryuji Yamada and Ken
Item Type: Refine your search to only Article
open access

100 Areas technical activities report: Engineering, August 1947

Description: There were seven charges of metal inspected during the month for corrosion and blistering studies. There were no unusual cases of blistering noted and the corrosion rates were normal for this time of year. Borescopic examination of the graphite packing around the ``B`` Hole in the F Pile revealed that the graphite is no more severely cracked than in the D Pile when it was inspected about a year ago. Examination of the graphite at the downstream and of Tube 1385-D did not indicate that any damag… more
Date: September 22, 1947
Creator: Woods, W. K.
Item Type: Refine your search to only Report
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