DESY-02-069 In conventional beam based alignment (BBA) procedures, the relative alignment of a quadrupole to a nearby beam position monitor is determined by finding a beam position in the quadrupole at which the closed orbit does not change when the quadrupole field is varied. The final focus magnets of the interaction regions (IR) of circular colliders often have some specialized properties th...

MANY PHASE FIELD FORMULATIONS HAVE BEEN DEVELOPED TO SIMULATE DAMAGE EVOLUTION TAKING INTO ACCOUNT DIFFERENT PHENOMENA SUCH AS PLASTICITY, LARGE DEFORMATION, ANISOTROPY AND FRACTURE BEHAVIOR OF MATERIALS. IN THE PRESENT WORK, A THERMODYNAMIC CONSISTENT FORMULATION IS ADAPTED INCLUDE EFFECT PREFERENTIAL CLEAVAGE PLANES EVOLUTION. SCALAR VARIABLE ASSOCIATED WITH EACH PREDEFINED DIRECTION CRACK PR...

Abstract The results reported herein were motivated by the potential application of combined optically stimulated (OSL) and thermoluminescence (TL) measurements for separation between beta neutron dose components in mixed neutron-beta radiation fields. advantages OSL/TL are two-fold: (i) OSL TL readout can be carried out on same sample (ii) greater efficiency to high ionization density (HID) du...

EUROnu is a European Commission funded FP7 Design Study investigating three possible options for a future high intensity neutrino oscillation facility in Europe. These options are a CERN to Fréjus Super-Beam, a Neutrino Factory and a Beta Beam. The aims of the project are to undertake the crucial R&D on each of the accelerator facilities and determine their performance and relative cost, includ...

background and aims. at present, cone beam computed tomography (cbct) has become a substitute for computed tomography (ct) in dental procedures. the metallic materials used in dentistry can produce artifacts due to the beam hardening phenomenon. these artifacts decrease the quality of images. in the present study, the number of artifacts as a result of beam hardening in the images of dental imp...

In gallium nanoparticles 100 nm in diameter grown on the tip of an optical fiber from an atomic beam we observed equilibrium coexistence of gamma, beta, and liquid structural phases that can be controlled by e-beam excitation in a highly reversible and reproducible fashion. With 2 keV electrons only 1 pJ of excitation energy per nanoparticle is needed to exercise control, with the equilibrium p...

In the framework of the studies for the upgrade of the insertions of the CERN Large Hadron Collider, four optical layouts were proposed with the aim of reducing the beta-function at the collision point down to 25 cm. The different candidate layouts are presented. Results from the studies performed on mechanical and dynamic aperture are summarized, together with the evaluation of beam-beam effec...

The best method of measuring CP violating effect in neutrino oscillation experiments is to construct and use CP-even neutrino beam made of an ideal mixture of ν̄e and νe of monochromatic lines. We describe how to realize this concept by exploiting accelerated unstable hydrogen-like heavy ion in a storage ring, whose decay has both electron capture and beta decay with a comparable fraction. How t...