Louisiana State University installed a 7.5 T superconducting wiggler in May 2013 on the electron storage ring located at the Bennett Johnson, Sr. Center for Advanced Microstructures and Devices (CAMD). The wiggler’s influence on betatron tunes and functions, orbit, lifetime, performance, and other relevant beam parameters are described. We further comment on device operations and modifications ...

A proposed high-brightness synchrotron light source (PEP-X) is under design at SLAC. The 4.5GeV PEP-X storage ring has four theoretical minimum emittance (TME) cells to achieve the very low emittance and two double-bend achromat (DBA) cells to provide spaces for IDs. Damping wigglers will be installed in zero-dispersion straights to reduce the emittance below 0.1nm. In this paper, we present a ...

Coherent X-ray Diffraction Imaging (CXDI) is a powerful method of imaging single crystalline grains within a powder. Direct Fourier transformation of the oversampled diffraction pattern surrounding a Bragg peak is possible once the phases have been obtained using a ‘support’ constraint. The image is in general complex with the phase representing a projection of the atomic displacements allowing...

A bivalent valuation is snt iff sound (standard PC inference rules take truths only into truths) and non-trivial (not all wffs are assigned the same truth value). Such a valuation is normal iff classically correct for each connective. Carnap knew that there were nion-normal snt valuations of PC, and that the gap they revealed between syntax and semantics could be "jumped" as follows. Let VALS.t...

The pioneers of modern closed-circuit oxygen attack swimming were the Italians. In the early days of World War Two, the Italian Navy found itself lacking the surface warfare power of other nations. In an effort to overcome this deficiency, they developed a cadre of intrepid naval commandos who attacked ships riding on torpedoes and using closed-circuit oxygen underwater breathing apparatuses (U...

an urban regeneration project is defined as a series of actions determined to accomplish urban regeneration aims that lead to reduce the problems of an area via improving the socioeconomic, physical and environmental conditions. today, urban regeneration is one of key principles in act of planning and it is beyond the urban renewal, urban redevelopment or urban rehabilitation processes because ...

The beam emittance at the interaction point of linear colliders is expected to be strongly influenced by the emittance of the beams extracted from the damping rings. Intra-beam scattering (IBS) potentially limits the minimum emittance of low-energy storage rings, and this effect strongly influences the choice of energy of damping rings [1]. Theoretical analysis suggests that the NLC damping rin...

The PEP-N project is a proposed new e+ecollider at SLAC to operate in the center of mass energy range of 1.0 GeV to 3.1 GeV. PEP-N consists of a new Very Low Energy electron Ring VLER (<800 MeV) to collide with the PEP-II e+ Low Energy Ring LER (3.1 GeV) parasitically to PEP-II operation for BaBar. Since the e+ ring has a fixed energy, the very low energy ring needs an energy range of 100 MeV t...

Beam storage close to a tune resonance (e.g. ∆Qx = 1/3) can generate Transverse Resonance Island Buckets (TRIBs) in the x, x ′ phase space providing a second stable island orbit winding around the standard orbit. For users this mode is offered as the “Twin Orbit Mode”. The two orbits can be well separated, with good life time and stability. The bunch fill pattern of the second orbit can, to som...

Gay men in the New York City metropolitan area were interviewed from 1990 to 1991,during theperiod of theAIDS epidemic. Usingan interviewschedule, they were asked questions about "coming out of the closet" and other identity issues: their experiences of "difference," beliefs about monogamous or "open" relationships, and their views about sex and commitment. The study's focus was on the men's "m...