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800MHz Crab Cavity Conceptual Design For the LHC Upgrade
In this paper, we present an 800 MHz crab cavity conceptual design for the LHC upgrade. The cell shape is optimized for lower maximum peak surface fields as well as higher transverse R/Q. A compact coax-to-coax coupler scheme is proposed to damp the LOM/SOM modes. A two-stub antenna with a notch filter is used as the HOM coupler to damp the HOM modes in the horizontal plane and rejects the operating mode at 800MHz. Multipacting (MP) simulations show that there are strong MP particles at the disks. Adding grooves along the short axis without changing the operating mode's RF characteristics can suppress the MP activities. Possible input coupler configurations are discussed.
Date:
May 26, 2009
Creator:
Xiao, Liling; Li, Zenghai; Ng, Cho-Kuen; Seryi, Andrei & /SLAC
Object Type:
Article
System:
The UNT Digital Library
81st Texas Legislature, Regular Session, House Bill 360, Chapter 154
Bill introduced by the Texas House of Representatives relating to the crediting and charging of investment gains and losses on the assets held in trust by the Texas Municipal Retirement System and providing a guaranteed minimum credit to employee accounts.
Date:
May 26, 2009
Creator:
Texas. Legislature. House of Representatives.
Object Type:
Legislative Document
System:
The Portal to Texas History
81st Texas Legislature, Regular Session, House Bill 652, Chapter 155
Bill introduced by the Texas House of Representatives relating to licensing of escrow officers.
Date:
May 26, 2009
Creator:
Texas. Legislature. House of Representatives.
Object Type:
Legislative Document
System:
The Portal to Texas History
81st Texas Legislature, Regular Session, House Bill 1203, Chapter 156
Bill introduced by the Texas House of Representatives relating to the designation of a person to act as the agent of a property owner in a property tax matter.
Date:
May 26, 2009
Creator:
Texas. Legislature. House of Representatives.
Object Type:
Legislative Document
System:
The Portal to Texas History
81st Texas Legislature, Regular Session, House Bill 1433, Chapter 157
Bill introduced by the Texas House of Representatives relating to the amount of the annual water quality fee imposed on holders of wastewater discharge permits and on users of water.
Date:
May 26, 2009
Creator:
Texas. Legislature. House of Representatives.
Object Type:
Legislative Document
System:
The Portal to Texas History
81st Texas Legislature, Regular Session, House Bill 1684, Chapter 158
Bill introduced by the Texas House of Representatives relating to the creation and administration of the rural veterinarian loan repayment program.
Date:
May 26, 2009
Creator:
Texas. Legislature. House of Representatives.
Object Type:
Legislative Document
System:
The Portal to Texas History
81st Texas Legislature, Regular Session, House Bill 2055, Chapter 159
Bill introduced by the Texas House of Representatives relating to the Chronic Kidney Disease Task Force.
Date:
May 26, 2009
Creator:
Texas. Legislature. House of Representatives.
Object Type:
Legislative Document
System:
The Portal to Texas History
81st Texas Legislature, Senate Bill 63, Chapter 160
Bill introduced by the Texas Senate relating to a career ladder for interveners who provide services under the deaf-blind with multiple disabilities waiver program.
Date:
May 26, 2009
Creator:
Texas. Legislature. Senate.
Object Type:
Legislative Document
System:
The Portal to Texas History
81st Texas Legislature, Senate Bill 254, Chapter 161
Bill introduced by the Texas Senate relating to the exemption of volunteer fire departments from certain motor fuel taxes.
Date:
May 26, 2009
Creator:
Texas. Legislature. Senate.
Object Type:
Legislative Document
System:
The Portal to Texas History
81st Texas Legislature, Senate Bill 446, Chapter 162
Bill introduced by the Texas Senate relating to the use of certain court costs in a criminal case for municipal programs enhancing public safety and security.
Date:
May 26, 2009
Creator:
Texas. Legislature. Senate.
Object Type:
Legislative Document
System:
The Portal to Texas History
81st Texas Legislature, Senate Bill 1506, Chapter 163
Bill introduced by the Texas Senate relating to the payment of the costs associated with certain conditions of bond.
Date:
May 26, 2009
Creator:
Texas. Legislature. Senate.
Object Type:
Legislative Document
System:
The Portal to Texas History
81st Texas Legislature, Senate Bill 1661, Chapter 164
Bill introduced by the Texas Senate relating to child support liens on real property.
Date:
May 26, 2009
Creator:
Texas. Legislature. Senate.
Object Type:
Legislative Document
System:
The Portal to Texas History
81st Texas Legislature, Senate Concurrent Resolutions 58
Concurrent resolution introduced by the Texas Senate and House of Representatives relating to recognizing April 12 through 18, 2009, as Texas Fraternal Week.
Date:
May 26, 2009
Creator:
Texas. Legislature. Senate.
Object Type:
Legislative Document
System:
The Portal to Texas History
The Altus Times (Altus, Okla.), Vol. 111, No. 229, Ed. 1 Tuesday, May 26, 2009
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
May 26, 2009
Creator:
Bush, Michael
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
[American National Bank of Texas, Terms and Conditions of Your Account]
A "Terms and Conditions of Your Account" document discussing liability, deposits, withdrawals, telephone transfers, check processing, and many other conditions listed by the American National Bank of Texas.
Date:
May 26, 2009
Creator:
unknown
Object Type:
Text
System:
The UNT Digital Library
The Baytown Sun (Baytown, Tex.), Vol. 89, No. 143, Ed. 1 Tuesday, May 26, 2009
Daily newspaper from Baytown, Texas that includes local, state, and national news along with advertising.
Date:
May 26, 2009
Creator:
Clements, Clifford E.
Object Type:
Newspaper
System:
The Portal to Texas History
Bioinspired synthesis of magnetic nanoparticles
The synthesis of magnetic nanoparticles has long been an area of active research. Magnetic nanoparticles can be used in a wide variety of applications such as magnetic inks, magnetic memory devices, drug delivery, magnetic resonance imaging (MRI) contrast agents, and pathogen detection in foods. In applications such as MRI, particle uniformity is particularly crucial, as is the magnetic response of the particles. Uniform magnetic particles with good magnetic properties are therefore required. One particularly effective technique for synthesizing nanoparticles involves biomineralization, which is a naturally occurring process that can produce highly complex nanostructures. Also, the technique involves mild conditions (ambient temperature and close to neutral pH) that make this approach suitable for a wide variety of materials. The term 'bioinspired' is important because biomineralization research is inspired by the naturally occurring process, which occurs in certain microorganisms called 'magnetotactic bacteria'. Magnetotactic bacteria use biomineralization proteins to produce magnetite crystals having very good uniformity in size and morphology. The bacteria use these magnetic particles to navigate according to external magnetic fields. Because these bacteria synthesize high quality crystals, research has focused on imitating aspects of this biomineralization in vitro. In particular, a biomineralization iron-binding protein found in a certain species of …
Date:
May 26, 2009
Creator:
David, Anand
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
The Boerne Star (Boerne, Tex.), Vol. 103, No. 42, Ed. 1 Tuesday, May 26, 2009
Semiweekly newspaper from Boerne, Texas that includes local, state, and national news along with advertising.
Date:
May 26, 2009
Creator:
Cartwright, Brian & Velvin, Candace E.
Object Type:
Newspaper
System:
The Portal to Texas History
China and Proliferation of Weapons of Mass Destruction and Missiles: Policy Issues
Using a variety of unclassified consultations and sources, this report discusses the national security problem of the People's Republic of China's (PRC) role in weapons proliferation and issues related to the U.S. policy response, including legislation, since the mid-1990s.
Date:
May 26, 2009
Creator:
Kan, Shirley A.
Object Type:
Report
System:
The UNT Digital Library
Coherent Soft X-Ray Generation in the Water Window with the EEHG Scheme
Recently a scheme entitled echo-enabled harmonic generation (EEHG) was proposed for producing short wavelength FEL radiation that allows far higher harmonic numbers to be accessed as compared with the normal limit arising from incoherent energy spread. In this paper we study the feasibility of a single EEHG stage to generate coherent radiation in the 'water window' (2--4 nm wavelength) directly from a UV seed laser at 190-nm wavelength. We present time-dependent simulation results which demonstrate that the single-stage EEHG FEL can generate high power soft x-ray radiation in the water window with narrow bandwidth close to Fourier transform limit directly from a UV seed laser. The schemes to generate short x-ray pulse from femtosecond to attosecond using EEHG FEL are also discussed.
Date:
May 26, 2009
Creator:
Xiang, D. & Stupakov, G.
Object Type:
Article
System:
The UNT Digital Library
Collins Mechanism Contributions to Single Spin Asymmetry
We present recent developments on the single transverse spin physics, in particular, the Collins mechanism contributions in various hadronic reactions, such as semi-inclusive hadron production in DIS process, azimuthal distribution of hadron in high energy jet in pp collisions. We will demonstrate that the transverse momentum dependent and collinear factorization approaches are consistent with each other in the description of the Collins effects in the semi-inclusive hadron production in DIS process.
Date:
May 26, 2009
Creator:
Yuan,F.
Object Type:
Article
System:
The UNT Digital Library
DART, T exploring innovative approach to expanding North Texas rail
News release about DART and the T's plans for a cross-regional Cotton Belt passenger rail line.
Date:
May 26, 2009
Creator:
Lyons, Morgan & Ball, Mark
Object Type:
Text
System:
The Portal to Texas History
Eighty-first Legislature: Text of Conference Committee Report, Senate Bill No. 1, Regular Session (General Appropriations Act)
This report provides information on the Conference Committee Senate Bill No. 1 report.
Date:
May 26, 2009
Creator:
Texas
Object Type:
Report
System:
The Portal to Texas History
Endothelial Cell Migration and Vascular Endothelial Growth Factor Expression Are the Result of Loss of Breast Tissue Polarity
Recruiting a new blood supply is a rate-limiting step in tumor progression. In a three-dimensional model of breast carcinogenesis, disorganized, proliferative transformed breast epithelial cells express significantly higher expression of angiogenic genes compared with their polarized, growth-arrested nonmalignant counterparts. Elevated vascular endothelial growth factor (VEGF) secretion by malignant cells enhanced recruitment of endothelial cells (EC) in heterotypic cocultures. Significantly, phenotypic reversion of malignant cells via reexpression of HoxD10, which is lost in malignant progression, significantly attenuated VEGF expression in a hypoxia-inducible factor 1{alpha}-independent fashion and reduced EC migration. This was due primarily to restoring polarity: forced proliferation of polarized, nonmalignant cells did not induce VEGF expression and EC recruitment, whereas disrupting the architecture of growth-arrested, reverted cells did. These data show that disrupting cytostructure activates the angiogenic switch even in the absence of proliferation and/or hypoxia and restoring organization of malignant clusters reduces VEGF expression and EC activation to levels found in quiescent nonmalignant epithelium. These data confirm the importance of tissue architecture and polarity in malignant progression.
Date:
May 26, 2009
Creator:
Chen, Amy; Cuevas, Ileana; Kenny, Paraic A; Miyake, Hiroshi; Mace, Kimberley; Ghajar, Cyrus et al.
Object Type:
Article
System:
The UNT Digital Library