Spatial resolution tests were performed on beamline 1.4.4 at the Advanced Light Source in Berkeley, CA, USA, a third-generation synchrotron light source. This beamline couples the high-brightness synchrotron source to a Thermo-Electron Continumicrom XL infrared microscope. Two types of resolution tests were performed in both the mid-IR and near-IR. The results are compared with a diffraction-li...

Red-shifted components of chromospheric emission lines in the hard X-ray impulsive phase solar flares have recently been studied through their 30 s evolution with high resolution IRIS. Radiative-hydrodynamic flare models show that these redshifts are generally reproduced by electron-beam generated condensations. The produce large ambient electron densities, and pressure broadening hydrogen Balm...

The search for sterile neutrinos is one of the hottest topics in the neutrino physics in this decade. The JSNS2 (J-PARC Sterile Neutrino Search at the J-PARC Spallation Neutron Source) experiment aims to search for the existence of neutrino oscillations with ∆m2 near 1eV2 at the J-PARC Materials and Life Science Experimental Facility (MLF). With the 1 MW of 3 GeV proton beam created by Rapid Cy...

We point out a synergy between T-conjugated oscillation channels in the determination of the neutrino mass hierarchy with oscillation experiments with relatively short baselines (L . 700 km), where the matter effect is small. If information from all four oscillation channels νμ → νe, ν̄μ → ν̄e, νe → νμ and ν̄e → ν̄μ is available, a matter effect of few percent suffices to break the sign-degeneracy ...

The performance of accelerators profits from phase-space tailoring by coupling of degrees of freedom. Previously applied techniques swap the emittances among the three degrees but the set of available emittances is fixed. In contrast to these emittance exchange scenarios, the emittance transfer scenario presented here allows for arbitrarily changing the set of emittances as long as the product ...

The term beta-beam has been coined for the production of a pure beam of electron neutrinos or their antiparticles through the decay of radioactive ions circulating in a storage ring. This concept requires radioactive ions to be accelerated to a Lorentz gamma of 150 for He and 60 for Ne. The neutrino source itself consists of a storage ring for this energy range, with long straight sections in l...

An outline of the present and future long-baseline neutrino facilities with emphasis on the possibilities at CERN is presented. Accelerator-made neutrinos for long-baseline oscillation experiments open the exploration to a broad and rather interesting field of physics experiments, with the measurement of the neutrino mixing angle (θ13), the determination of the sign of neutrino mass hierarchy (...

The Linac Coherent Light Source (LCLS) undulator line will consist of undulator segments separated by breaks of various lengths. Focusing quadrupoles, in a FODO lattice, and electron-beam diagnostics will be located in the breaks, and every third break will be longer to also accommodate photon diagnostics. The electron-beam beta function and the undulator period were selected to minimize the sa...