Welcome to this special issue on accelerator virtualization in Concurrency and Computation: Practice Experience. Virtualization is a key technique developed for sharing the underlying physical resources of computer, such as processor or memory network. This enables effective use by improving their utilization reduces costs. A well-known example are virtual machines that have become prominent wi...

Parameter α ∈ R is called the twist parameter. A point at position (x, y) on the cylinder moves at constant height y around the cylinder a distance αy, and then moves up one unit if it is on the right half of the cylinder (x′ ∈ (1/2, 1)), down one unit if it is on the left half (x′ ∈ (0, 1/2)), and stays at the same vertical position if it is at the singular lines x′ = 1/2 or 0. Such system can...

Spontaneous radiation emitted from relativistic electrons undergoing betatron motion in a plasma-focusing channel is analyzed, and applications to plasma wake-field accelerator experiments and to the ion-channel laser (ICL) are discussed. Important similarities and differences between a free electron laser (FEL) and an ICL are delineated. It is shown that the frequency of spontaneous radiation ...

Within the framework of three-neutrino and four-neutrino scenarios that can describe the results of the LSND experiment, we consider the capabilities of short baseline neutrino oscillation experiments at a neutrino factory. We find that, when short baseline (L ∼ 100 km) neutrino factory measurements are used together with other accelerator-based oscillation results, the complete three-neutrino ...

We present a new approach (demonstrated experimentally and through modeling) to characterize the spectral envelope of a terahertz (THz) pulse in a single shot. The coherent THz pulse is produced by a femtosecond electron bunch and contains information on the bunch duration. The technique, involving a single low-power laser probe pulse, is an extension of the conventional spectral encoding metho...