many shape and topology optimization methods have been inspired from the nature. in this paper, two different optimization algorithms based on the adaptive biological growth (abg) have been applied to some structural elements. the first algorithm is developed for the shape optimization and is applied to a plate with a central hole as well as a fillet plate. the second algorithm is the soft kill...

Traditionally, the specimen obtained from a breast biopsy can only be examined by a microscope. Although the resolution of microscope is high, it can only examine one thin section at a time. Hence, the microcalcifications next to the observed section may be missed. To solve for this problem, we acquire the specimen by a 3D micro computed tomography (microCT) with electron bombarded charged coup...

SLAC E-158 is making the first measurement of parity violation in Møller scattering. E-158 measures the right-left cross-section asymmetry, ALR, in the scattering of a 45-GeV polarized electron beam off unpolarized electrons in a liquid hydrogen target. E-158 plans to measure the expected Standard Model asymmetry of ∼ 10 to an accuracy of better than 10. This paper discusses the performance of ...

A. Peters, M. Schwickert, A. Reiter and C. Dorn, GSI, Darmstadt, Germany Introduction In June 2003 it was decided that the GSI Beam Diagnostics (BD) group would act as contractor for the delivery of beam diagnostic devices for the heavy-ion cancer therapy facility HIT in Heidelberg. The contract included the production of the mechanical parts (feed-throughs, detectors etc.) as well as the integ...

A novel method using high-power laser as a circular deflector is proposed for the measurement of femtosecond (fs) and sub-fs electron beam. In the scheme, the electron beam interacts with a laser pulse operating in a radially polarized doughnut mode (TEM01 ) in a helical undulator, generating angular kicks along the beam in two directions at the same time. The phase difference between the two a...

Due to the presence of through-thickness reinforcement, 3D woven composites have superior fracture toughness, fatigue life, and damage tolerance compared to laminated composites. Furthermore, 3D woven composites exhibit a progressive damage behavior which is more benign than the typical catastrophic failure behavior of laminated composites. These properties lead to high specific energy absorpti...