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A 1.8 Mev K+ injector for the high current beam transport experiment fusion
For the High Current Beam Transport Experiment (HCX) at LBNL, an injector is required to deliver up to 1.8 MV of 0.6 A K{sup +} beam with an emittance of {approx}1 p-mm-mrad. We have successfully operated a 10-cm diameter surface ionization source together with an electrostatic quadrupole (ESQ) accelerator to meet these requirements. The pulse length is {approx}4 {micro}s, firing at once every 10-15 seconds. By optimizing the extraction diode and the ESQ voltages, we have obtained an output beam with good current density uniformity, except for a small increase near the beam edge. Characterization of the beam emerging from the injector included measurements of the intensity profile, beam imaging, and transverse phase space. These data along with comparison to computer simulations provide the knowledge base for designing and understanding future HCX experiments.
Date:
May 20, 2002
Creator:
Kwan, J. W.; Bieniosek, F. M.; Henestroza, E.; Prost, L. & Seidl, P.
Object Type:
Article
System:
The UNT Digital Library
15th Street News (Midwest City, Okla.), Vol. 32, No. 4, Ed. 1 Friday, September 20, 2002
Newspaper from Rose State College in Midwest City, Oklahoma that includes national, local, and campus news along with advertising.
Date:
September 20, 2002
Creator:
Baldwin, Alisha
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
[17th Annual Spring Rising Lecture, Part 1 of 2]
Video recording from The Black Academy of Arts and Letters recorded during their 17th Annual Spring Rising Lecture event in 2002. This video features a lecture from Dr. Yosef ben-Jochannan as a part of the 17th Annual Spring Rising Conference which focuses on the African Origin of Civilization. This video shows performances before the lecture. This video is Part 1 of 2 of the event.
Date:
April 20, 2002
Creator:
unknown
Object Type:
Video
System:
The UNT Digital Library
[17th Annual Spring Rising Lecture, Part 2 of 2]
Video recording from The Black Academy of Arts and Letters recorded during their 17th Annual Spring Rising Lecture event in 2002. This video features a lecture from Dr. Yosef ben-Jochannan as a part of the 17th Annual Spring Rising Conference which focuses on the African Origin of Civilization. This video is Part 2 of 2 of the event.
Date:
April 20, 2002
Creator:
unknown
Object Type:
Video
System:
The UNT Digital Library
[17th Annual Spring Rising Lecture, Tape 3]
Video recording from The Black Academy of Arts and Letters recorded during their 17th Annual Spring Rising Lecture event in 2002. This video features a lecture from Dr. Yosef ben-Jochannan as a part of the 17th Annual Spring Rising Conference which focuses on the African Origin of Civilization. This video shows a performance before the lecture. This video is Tape 3 of the event.
Date:
April 20, 2002
Creator:
unknown
Object Type:
Video
System:
The UNT Digital Library
2002 G/L/B/T Voter's Guide (Dallas, Tex.), Vol. 19, No. 21, Ed. 2 Friday, September 20, 2002
Elections guide published by the Dallas Gay and Lesbian Alliance Don Baker Education Fund as a supplement to the Dallas Voice newspaper from Dallas, Texas that includes 2002 Texas election information of interest to the Lesbian, Gay, Bisexual, and Transgender (LGBT) community.
Date:
September 20, 2002
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Abortion: Legislative Response
The primary purpose of this issue brief is to focus on the current legislative action in the 107th Congress with respect to abortion; however, understanding that legislation requires a review of the U. S. Supreme Court’s leading decisions concerning a woman’s right to choose whether to terminate her pregnancy. For a detailed discussion of the case law, see CRS Report 95-724, Abortion Law Development: A Brief Overview.
Date:
September 20, 2002
Creator:
Lewis, Karen J.; Shimabukuro, Jon O. & Ely, Dana
Object Type:
Report
System:
The UNT Digital Library
About the Toroidal Magnetic Field of a Tokamak Burning Plasma Experiment with Superconducting Coils
In tokamaks, the strong dependence on the toroidal magnetic field of both plasma pressure and energy confinement is what makes possible the construction of small and relatively inexpensive burning plasma experiments using high-field resistive coils. On the other hand, the toroidal magnetic field of tokamaks using superconducting coils is limited by the critical field of superconductivity. In this article, we examine the relative merit of raising the magnetic field of a tokamak plasma by increasing its aspect ratio at a constant value of the peak field in the toroidal magnet. Taking ITER-FEAT as an example, we find that it is possible to reach thermonuclear ignition using an aspect ratio of approximately 4.5 and a toroidal magnetic field of 7.3 T. Under these conditions, fusion power density and neutron wall loading are the same as in ITER [International Thermonuclear Experimental Reactor], but the normalized plasma beta is substantially smaller. Furthermore, such a tokamak would be able to reach an energy gain of approximately 15 even with the deterioration in plasma confinement that is known to occur near the density limit where ITER is forced to operate.
Date:
February 20, 2002
Creator:
Mazzucato, E.
Object Type:
Report
System:
The UNT Digital Library
Acid Gas Removal by Customized Sorbents for Integrated Gasification Fuel Cell Systems
In order to reduce exergy losses, gas cleaning at high temperatures is favored in IGFC systems. As shown by thermodynamic data, separation efficiencies of common sorbents decrease with increasing temperature. Therefore, acid gas removal systems have to be developed for IGFC applications considering sorbent capacity, operation temperature, gasification feedstock composition and fuel cell threshold values.
Date:
September 20, 2002
Creator:
Kapfenberger, J.; Sohnemann, J.; Schleitzer, D. & Loewen, A.
Object Type:
Article
System:
The UNT Digital Library
Additional Public Transportation Investment Needed
News release concerning a study by the Texas Transportation Institute that recommends increased investment in public transportation due to the costs of traffic congestion.
Date:
June 20, 2002
Creator:
Coggin, Amy & Aggazio, Donna
Object Type:
Text
System:
The Portal to Texas History
Afghanistan: Current Issues and U.S. Policy Concerns
The United States and its allies are helping Afghanistan emerging from more than 22 years of warfare, although substantial risk to Afghan stability remains. Before the U.S. military campaign against the orthodox Islamist Taliban movement began on October 7, 2001, Afghanistan had been mired in conflict since the Soviet invasion of Afghanistan in 1979. The defeat of the Taliban has enabled the United States and its coalition partners to send forces throughout Afghanistan to search for Taliban and Al Qaeda fighters and leaders that remain at large, including Osama bin Laden. As the war against remaining Al Qaeda and Taliban elements winds down, the United States is shifting its military focus toward stabilizing the interim government, including training a new Afghan national army, and supporting the international security force (ISAF) that is helping the new government provide security.
Date:
May 20, 2002
Creator:
Katzman, Kenneth
Object Type:
Report
System:
The UNT Digital Library
Afghanistan's Path to Reconstruction: Obstacles, Challenges, and Issues for Congress
Although hostilities in Afghanistan have not yet ended and the war on terrorism in Afghanistan continues, relief and reconstruction efforts to assist the people of Afghanistan are well underway. International attention has mostly focused on Afghanistan’s short- and medium-term future. While questions continue between the United States and its allies about division of labor, burdensharing, and exit strategies, Congress continues to examine the assistance progress, aid priorities, long-term reconstruction proposals, and the implementation role to be played by the United States. Furthermore, Congress considers the FY2003 funding for Afghanistan inadequate and is calling for significantly higher appropriations. A brief overview of the current situation provides a snapshot of the progress to date and the many challenges that lie ahead.
Date:
September 20, 2002
Creator:
Margesson, Rhoda
Object Type:
Report
System:
The UNT Digital Library
Air Force Depot Maintenance: Management Improvements Needed for Backlog of Funded Contract Maintenance Work
A letter report issued by the General Accounting Office with an abstract that begins "The Floyd D. Spence National Defense Authorization Act for Fiscal Year 2001 requires GAO to review various aspects of the Department of Defense (DOD) policy that allows Defense Working Capital Fund activities to carry over a 3-month level of work from one fiscal year to the next. The DOD 3-month carryover standard applies to all DOD activity groups except for the contract portion of the Air Force depot maintenance activity group, for which DOD established a 4.5-month carryover standard because of the additional administrative functions associated with awarding contracts. Reported carryover balances for fiscal years 2000 and 2001 were inaccurate and, therefore, the balances were not reliable for decision-making or budget review purposes. The reported carryover balances were not accurate due to (1) faulty assumptions used in calculating work-in-process and (2) records not accurately reflecting work that was actually completed by year-end. As a result, the amount of carryover reported by the Air Force was understated by tens of millions of dollars and customers' funds were idle that could have been used for other purposes during the fiscal year. Even though the carryover was understated, Air …
Date:
June 20, 2002
Creator:
United States. General Accounting Office.
Object Type:
Report
System:
The UNT Digital Library
Airflow design for cleanrooms and its economic implications
A cleanroom is designed to control the concentration of airborne particles. As a result, large amount of cleaned air is often required to remove or dilute contaminants for satisfactory operations in critical cleanroom environment. Cleanroom environmental systems (HVAC systems) in semiconductor, pharmaceutical, and healthcare industries are much more energy intensive compared to their counterparts (HVAC systems) serving commercial buildings such as typical office buildings. There is a tendency in cleanroom design and operation, however, to provide excessive airflow rates by HVAC systems, largely due to design conservatism, lack of understanding in airflow requirements, and more often, concerns such as cleanliness reliability, design and operational liabilities. A combination of these likely factors can easily result in HVAC systems' over-design. Energy use of cleanroom environmental systems varies with the system design, cleanroom functions, and critical parameter control including temperatures and humidities. In particular, cleanroom cleanliness requirements specified by ''cleanliness class'' [1],[2] often cast large impact on energy use. A review of studies on cleanroom operation costs indicated that energy costs could amount to 65-75% of the total annual cost associated with cleanroom operation and maintenance in some European countries[3]. Depending on cleanroom cleanliness classes, annual cleanroom electricity use for cooling and fan …
Date:
August 20, 2002
Creator:
Xu, Tengfang
Object Type:
Article
System:
The UNT Digital Library
The Albany News (Albany, Tex.), Vol. 127, No. 3, Ed. 1 Thursday, June 20, 2002
Weekly newspaper from Albany, Texas that includes local, county, and state news along with extensive advertising.
Date:
June 20, 2002
Creator:
Lucas, Melinda L.
Object Type:
Newspaper
System:
The Portal to Texas History
Alive in the Mystery: Finding a God-Centered Life - Obeying God
Lecture given Wednesday, February 20, 2002, 2:00 PM at Abilene Christian University: "The point of spirituality is relationship with God. Knowing God relationally requires that we listen for His word and live within it. Join us as we search together for a God-oriented life."
Date:
February 20, 2002
Creator:
Ganus, Debbie
Object Type:
Sound
System:
The Portal to Texas History
Altus Times (Altus, Okla.), Vol. 103, No. 277, Ed. 1 Sunday, January 20, 2002
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
January 20, 2002
Creator:
Bush, Michael
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 103, No. 304, Ed. 1 Wednesday, February 20, 2002
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
February 20, 2002
Creator:
Bush, Michael
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 104, No. 5, Ed. 1 Wednesday, March 20, 2002
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
March 20, 2002
Creator:
Bush, Michael
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 104, No. 55, Ed. 1 Monday, May 20, 2002
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
May 20, 2002
Creator:
Bush, Michael
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 104, No. 82, Ed. 1 Thursday, June 20, 2002
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
June 20, 2002
Creator:
Bush, Michael
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 104, No. 134, Ed. 1 Tuesday, August 20, 2002
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
August 20, 2002
Creator:
Bush, Michael
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 104, No. 158, Ed. 1 Friday, September 20, 2002
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
September 20, 2002
Creator:
Bush, Michael
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 104, No. 183, Ed. 1 Sunday, October 20, 2002
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
October 20, 2002
Creator:
Bush, Michael
Object Type:
Newspaper
System:
The Gateway to Oklahoma History