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2 HZ, 30 T SPLIT PULSE WATER COOLED MAGNET FOR NEUTRON SCATTERING EXPERIMENTS (MATERIALS CHARACTERIZATION AND DESIGN OPTIONS)

2 HZ, 30 T SPLIT PULSE WATER COOLED MAGNET FOR NEUTRON SCATTERING EXPERIMENTS (MATERIALS CHARACTERIZATION AND DESIGN OPTIONS)

Date: August 26, 1997
Creator: EYSSA, Y. M.; WALSH, R. P.; MILLER, J. R.; MILLER, G. E.; PERNAMBUCO-WISE, P.; BIRD, M. D. et al.
Description: No abstract prepared.
Contributing Partner: UNT Libraries Government Documents Department
2 Letters from concerned citizens in response to the recommendation regarding the Defense Office of Hearings and Appeals in Fort Meade

2 Letters from concerned citizens in response to the recommendation regarding the Defense Office of Hearings and Appeals in Fort Meade

Date: July 30, 2005
Creator: unknown
Description: Community Correspondence - 2 Letters from concerned citizens in response to the recommendation regarding the Defense Office of Hearings and Appeals in Fort Meade
Contributing Partner: UNT Libraries Government Documents Department
2-MV electrostatic quadrupole injector for heavy-ion fusion

2-MV electrostatic quadrupole injector for heavy-ion fusion

Date: November 10, 2004
Creator: Bieniosek, F.M.; Celata, C.M.; Henestroza, E.; Kwan, J.W.; Prost, L. & Seidl, P.A.
Description: High current and low emittance are principal requirements for heavy-ion injection into a linac driver for inertial fusion energy. An electrostatic quadrupole (ESQ) injector is capable of providing these high charge density and low emittance beams. We have modified the existing 2-MV Injector to reduce beam emittance and to double the pulse length. We characterize the beam delivered by the modified injector to the High Current Transport Experiment (HCX) and the effects of finite rise time of the extraction voltage pulse in the diode on the beam head. We demonstrate techniques for mitigating aberrations and reducing beam emittance growth in the injector.
Contributing Partner: UNT Libraries Government Documents Department
2 MW upgrade of the Fermilab Main Injector

2 MW upgrade of the Fermilab Main Injector

Date: June 4, 2003
Creator: Chou, Weiren
Description: In January 2002, the Fermilab Director initiated a design study for a high average power, modest energy proton facility. An intensity upgrade to Fermilab's 120-GeV Main Injector (MI) represents an attractive concept for such a facility, which would leverage existing beam lines and experimental areas and would greatly enhance physics opportunities at Fermilab and in the U.S. With a Proton Driver replacing the present Booster, the beam intensity of the MI is expected to be increased by a factor of five. Accompanied by a shorter cycle, the beam power would reach 2 MW. This would make the MI a more powerful machine than the SNS or the J-PARC. Moreover, the high beam energy (120 GeV) and tunable energy range (8-120 GeV) would make it a unique high power proton facility. The upgrade study has been completed and published. This paper gives a summary report.
Contributing Partner: UNT Libraries Government Documents Department
2-Page Summary for Neptunium solubility in the Near-field Environment of A Proposed Yucca Mountain Repository

2-Page Summary for Neptunium solubility in the Near-field Environment of A Proposed Yucca Mountain Repository

Date: March 29, 2005
Creator: Sassani, D.; van Luik, A. & Summerson, J.
Description: The total system performance assessment (TSPA) for the proposed repository at Yucca Mountain, NV, includes a wide variety of processes to evaluate the potential release of radionuclides from the Engineered Barrier System into the unsaturated zone of the geosphere. The principal processes controlling radionuclide release and mobilization from the waste forms are captured in the model to assess the dissolved concentrations of radionuclides in the source-term. The TSPA model of the source-term incorporates the far-from-equilibrium dissolution of, for example, spent nuclear fuel (SNF) to capture bounding rates of radionuclide availability as the SNF degrades. In addition, for individual radionuclides, the source-term model evaluates solubility constraints that are more indicative of longer-term, equilibrium processes that can limit the potential mass transport from the source term in those cases. These solubility limits represent phase saturation and precipitation processes that can occur either at the waste form as it alters, or at other locations in the near-field environment (e.g., within the invert) if chemical conditions are different. Identification and selection of applicable constraints for solubility-limited radionuclide concentrations is a primary focus in formulating the source-term model for the TSPA. Neptunium is a long-lived radionuclide that becomes a larger fraction of the potential dose ...
Contributing Partner: UNT Libraries Government Documents Department
2-pi Photoproduction from CLAS and CB-ELSA - The Search for Missing Resonances

2-pi Photoproduction from CLAS and CB-ELSA - The Search for Missing Resonances

Date: October 1, 2003
Creator: Thoma, Ulrike
Description: 2-pi-photoproduction is one of the promising reactions to search for baryon resonances that have been predicted but have not yet been observed. The gamma-rho --> rho-pi{sup 0}-pi{sup 0}(CB-ELSA) and the gamma-rho --> rho-pi{sup +}-pi{sup -} (CLAS) data show interesting resonance structures. A partial wave analysis (PWA) has to be done to determine which baryon resonances contribute what their quantum numbers and their relative couplings to the different accessible rho-2-pi-channels and to the photon are. First preliminary PWA-results on the lowest energy rho-pi{sup 0}-pi{sup 0} data (sq rt s<1.8 GeV)look very promising. From an extension of this analysis to higher energies combining the rho-pi{sup 0}-pi{sup 0} and the rho-pi{sup +}-pi{sup -}-data, one can expect; interesting results on resonances decaying into Delta-pi, N-rho, N(pi-pi)s, N*-pi, and Delta*-pi.
Contributing Partner: UNT Libraries Government Documents Department
2 Questions pertaining to DON-0133 and the non-BRAC Scenario (Portsmouth Naval Shipyard)

2 Questions pertaining to DON-0133 and the non-BRAC Scenario (Portsmouth Naval Shipyard)

Date: August 12, 2005
Creator: United States. Dept. of Defense.
Description: 2 Questions pertaining to DON-0133 and the non-BRAC Senario (Portsmouth Naval Shipyard. Department of Defense Clearinghouse Response: DoD Clearinghouse reply to a letter from the BRAC Commission regarding 2 Questions pertaining to DON-0133 and the non-BRAC scenario (Portsmouth Naval Shipyard)
Contributing Partner: UNT Libraries Government Documents Department
N = 2 string amplitudes

N = 2 string amplitudes

Date: August 1, 1995
Creator: Ooguri, H.
Description: In physics, solvable models have played very important roles. Understanding a simple model in detail teaches us a lot about more complicated models in generic situations. Five years ago, C. Vafa and I found that the closed N = 2 string theory, that is a string theory with the N = 2 local supersymmetry on the worldsheet, is classically equivalent to the self-dual Einstein gravity in four spacetime dimensions. Thus this string theory is solvable at the classical level. More recently, we have examined the N = 2 string partition function for spacial compactifications, and computed it to all order in the string perturbation expansion. The fact that such computation is possible at all suggests that the N = 2 string theory is solvable even quantum mechanically.
Contributing Partner: UNT Libraries Government Documents Department
2 {times} 2 TeV {mu}{sup +}{mu}{sup {minus}} collider: Lattice and accelerator-detector interface study

2 {times} 2 TeV {mu}{sup +}{mu}{sup {minus}} collider: Lattice and accelerator-detector interface study

Date: May 1, 1995
Creator: Gelfand, N.M. & Mokhov, N.V.
Description: The design for a high-luminosity {mu}{sup +}{mu}{sup {minus}} superconducting storage ring is presented based on first-pass calculations. Special attention is paid to two Iowa interaction regions (IR) whose optics are literally interlaced with the collider detectors. Various sources of backgrounds in IR are explored via realistic Monte Carlo simulations. An improved design of the collider lattice in the neighborhood of the interaction points (EP) is determined by the need to reduce significantly background levels in the detectors.
Contributing Partner: UNT Libraries Government Documents Department
A 2 to 4 nm high power FEL on the SLAC linac

A 2 to 4 nm high power FEL on the SLAC linac

Date: September 1, 1992
Creator: Pellegrini, C.; Rosenzweig, J.; Nuhn, H.D.; Pianetta, P.; Tatchyn, R.; Winick, H. et al.
Description: We report the results of preliminary studies of a 2 to 4 nm SASE FEL, using a photoinjector to produce the electron beam, and the SLAC linac to accelerate it to an energy up to 10 GeV. Longitudinal bunch compression is used to increases ten fold the peak current to 2.5 kA, while reducing the bunch length to the subpicosecond range. The saturated output power is in the multi-gigawatt range, producing about 10{sup 14} coherent photons within a bandwidth of about 0.2% rms, in a pulse of several millijoules. At 120Hz repetition rate the average power is about 1 W. The system is optimized for x-ray microscopy in the water window around 2 to 4 nm, and will permit imaging a biological sample in a single subpicosecond pulse.
Contributing Partner: UNT Libraries Government Documents Department