A. Fisher

First principles validation of energy barriers in Ni75Al25

A. Fisher, Julie B. Staunton, Huan Wu, P.E. Brommer

Abstract Precipitates in nickel-based superalloys form during heat treatment on a time scale inaccessible to direct molecular dynamics simulation, but can be studied using kinetic Monte Carlo (KMC) modelling. This requires reliable values for the barrier energies separating distinct configurations over the …

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Design Studies for a 10^36 SuperB-Factory

J. Seeman, Yangchun Cai, S. D. Ecklund, A. Fisher et autres

A Super B Factory, an asymmetric e + e -collider with a luminosity of 10 36 cm -2 s -1 , can provide a sensitive probe of new physics in the flavor sector of the Standard Model.The success of PEP-II and KEKB …

FIRST MEASUREMENTS OF THE FACET COHERENT TERAHERTZ RADIATION SOURCE

E. Adli, A. Fisher, Mark Hogan, Zhaoxin Wu et autres

Abstract Not Provided

The BB detector: Upgrades, operation and performance

Bernard Aubert, R. Barate, D. Boutigny, F. Couderc et autres

The BaBar detector operated successfully at the PEP-II asymmetric e+e− collider at the SLAC National Accelerator Laboratory from 1999 to 2008. This report covers upgrades, operation, and performance of the collider and the detector systems, as well as the trigger, online and …

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Parameters for the PEP-II B-Factory at SLAC in 2008

J. Seeman, Ronald A Akre, P. Bellomo, Kirk J. Bertsche et autres

The PEP-II B-Factory at SLAC (3.1 GeV e{sup +} x 9.0 GeV e{sup -}) operated from 1999 to 2008, delivering luminosity to the BaBar experiment. The design luminosity was reached after one and a half years of operation. In the end PEP-II …

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Observation of the Bottomonium Ground State in the Decay Υ(3S)→γηb

Bernard Aubert, M. Bóna, Y. Karyotakis, J. P. Lees et autres

We report the results of a search for the bottomonium ground state ${\ensuremath{\eta}}_{b}(1S)$ in the photon energy spectrum with a sample of $(109\ifmmode\pm\else\textpm\fi{}1)$ million of $\ensuremath{\Upsilon}(3S)$ recorded at the $\ensuremath{\Upsilon}(3S)$ energy with the BABAR detector at the PEP-II $B$ factory at SLAC. …

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Magnetic measurements and simulations for a 4-magnet dipole chicane for the International Linear Collider

R. Arnold, A. Fisher, Carsten HAST, Z. M. Szalata et autres

T-474 at SLAC is a prototype BPM-based energy spectrometer for the ILC. We describe magnetic measurements and simulations for the 4-magnet chicane used in T-474.

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A LUMINOSITY OF 10 34 CM −2 S −1 IN THE PEP-II B-FACTORY*

J. Seeman, Mauro Pivi, U. Wienands, R. Erickson et autres

PEP-II is an e+e- asymmetric B-Factory Collider located at SLAC operating at the Upsilon 4S resonance (3.1 GeV x 9 GeV). It has reached a luminosity of 1.09x1034/cm2/s and has delivered an integrated luminosity of 884 pb-1 in one day. PEP-II has …

Performance of the PEP-II B-Factory Collider at SLAC

J. Seeman, M. Browne, Y. Cai, William Colocho et autres

PEP-II is an e+e-asymmetric B-Factory Collider located at SLAC operating at the Upsilon 4S resonance (3.1 GeV x 9 GeV). It has reached a luminosity of 9.21×1033/cm2/s and has delivered an integrated luminosity of 710 pb-1in one day. PEP-II has delivered, over …

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Design studies for a 10/sup 36/ super-B-factory

J. Seeman, Yiming Cai, F.J. Decker, S. D. Ecklund et autres

A Super B factory, an asymmetric e/sup +/e/sup -/ collider with a luminosity of 10/sup 36/ cm/sup -2/s/sup -1/, can provide a sensitive probe of new physics in the flavor sector of the standard model. The success of PEP-II and KEKB in …

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Injection related background due to the transverse feedback

F.J. Decker, R. Akre, A. Fisher, Richard H. Iverson et autres

The background in the BaBar detector is especially high during injection, when most components are actually having reduced voltages. The situation is worse for the beam in high energy ring (HER) when the LER beam is present. It was found that the …

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First beam commissioning results from the PEP-II B factory high-energy ring: Beam optics

U. Wienands, Ralph W. Assmann, Venkata Krishna Bharadwaj, Y. Cai et autres

Construction of the PEP-II B–Factory High Energy Ring has been recently completed at SLAC. In two beam commissioning periods, stored beams of up to 300 mA intensity have been achieved with good beam lifetimes. The Ring hardware systems have worked very well …