consider a c conversion Since the le concurrent Abstract: We report r on spin tracking particle resonances close to the n widths are narrow. We d This work was supporte Energy under Contract N Linear Collider Collaboration Tech Notes We report r on spin tracking particle resonances close to the n widths are narrow. We d This work was supporte Energy under Contract N Linear Collider Collaboratio...

Three dimensional single particle trapping and manipulation is an outstanding challenge in various fields ranging from basic physics to life sciences. By monitoring the response of a trapped particle to a designed environment one can extract its characteristics. In addition, quantum dynamics of a spatially scanned well-known particle can provide environmental information. Precise tracking and p...

For intra-fractionally moving tumours such as lung cancer, treatments with scanned particles [1] without motion compensation can cause unacceptable local underor over-dosage due to interplay effects of sequential dose delivery and target motion [2]. In order to treat moving tumours with scanned particle beams, a beam tracking system, 3DOMC system, was developed [3] and upgraded [4,5]. The beam ...

In this paper the problems of state estimation, tracking control and shape control in a micro-cantilever beam with nonlinear electrostatic actuation are investigated. The system’s partial differential equation of motion is converted into a set of ordinary differential equations by projection method. Observabillity of the system is proven and a state estimation system is designed using extended ...

Scanned carbon ion radiotherapy beams provide highly conformal dose distributions for stationary tumors and excellent sparing of nearby normal tissues due to the sharp energy-loss maximum (Bragg peak) near the end of the particle range and minimal lateral Coulomb scattering. For moving targets (e.g., respiratory motion) treatment delivery with scanned ion beams becomes considerably more complex...

effect of scale on the hydrodynamics of gas-solid fluidized beds was investigated in two fluidized beds of 152 mm and 78 mm in diameter.  air at room temperature was used as the fluidizing gas in the bed of sand particles. the radioactive particle tracking (rpt) technique was employed to obtain the instantaneous positions of the particles at every 20 ms of the experiments. these data were used ...

Treating tumors that are subject to intrafractional motion (e.g. lung tumors) with scanned particle beams leads to deterioration of the deposited dose distributions. One possible technique to mitigate motion effects is beam tracking [1]. In case of rotational motion the beam path and thereby the dose deposition in the plateau region proximal of the Bragg peak position changes despite adaptation...

The study of beam transport is of central importance to the design and performance assessment of modern particle accelerators. In this work, we benchmark two contemporary codes DIMAD and BDSIM, the latter being a relatively new tracking code built within the framework of GEANT4. We consider both the 20 mrad and 2 mrad extraction lines of the International Linear Collider (ILC) and we perform tr...

Monitoring and visualizing specimens at a large penetration depth is a challenge. At depths of hundreds of microns, several physical effects (such as, scattering, PSF distortion and noise) deteriorate the image quality and prohibit a detailed study of key biological phenomena. In this study, we use a Bessel-like beam in-conjugation with an orthogonal detection system to achieve depth imaging. A...

Futuremachines such as the Electron Ion Collider (MEIC), linac-ring machines (eRHIC) or LHeC are particularly sensitive to beam-beam effects. This is the limiting factor for long-term stability and high luminosity reach. The complexity of the non-linear dynamics makes it challenging to perform such simulations typically requiring millions of turns. Until recently, most of the methods have invol...