the price of single point diamond tools with a sharp tip is very high due to complex machining process and highly expensive machining equipments. yet, the performance is not quite satisfactory. in this paper, we have presented a very simple and cost effective machining process for the sharpening and polishing of diamond stylus using low energy reactive ion beam machining (ribm). in our method, ...

We have developed a compact, low cost, modular, crossed molecular beam machine. The new apparatus utilizes several technological advancements in molecular beams valves, ion detection, and vacuum pumping to reduce the size, cost, and complexity of a molecular beam apparatus. We apply these simplifications to construct a linear molecular beam machine as well as a crossed-atomic and molecular beam...

The price of single point diamond tools with a sharp tip is very high due to complex machining process and highly expensive machining equipments. Yet, the performance is not quite satisfactory. In this paper, we have presented a very simple and cost effective machining process for the sharpening and polishing of diamond stylus using low energy reactive ion beam machining (RIBM). In our method, ...

In this paper we present an automatic system developed for the Lisbon’s Technologic Nuclear Institute to control the operation of their particle accelerator. It is an accelerator based on a Van de Graaff machine. The system uses a personal computer running LabVIEW software which implements the procedures to automatically increase the terminal voltage, light-up the ion source and focus the parti...

Since 1994 clinical trials have been performed successfully with carbon beam. To improve the clinical result further, new irradiation systems are under development such as a 3D-irradiation system and a verification system of range with positron emitter. There are also improvements on the accelerator performances. One is the wide range of ion species; the others are concerned with the machine de...

A profile monitor is described that makes use of a low-intensity and low-energy ion beam to measure the transverse profile of a dense proton beam of small dimensions. Three techniques are considered based on the use of ion beams having a pencil, curtain, or cylindrical shape. The detector is almost non-interceptive for the proton beam and does not introduce disturbances in the machine environme...

FAIR BOOSTER OPERATION U Beam Intensity In the frame of machine experiments, the maximum accelerated number of U-ions (FAIR reference ion) could be increased to 7x10 ions per cycle. In parallel, the relative amount of beam loss during the cycle has been reduced to about 30% of the injected ions (figure 1). Essentially, this progress has been enabled by a careful machine setting with an optimize...

Highlights Focused Ion Beam Lithography is a very powerful technique for directly writing patterns on many substrates, it is a mask-less and resist-less technique that allows a very wide range of applications, providing a resolution down to 10 nm. Joined to the Electron Beam Lithography and the Gas Deposition System it became a very versatile tool for many fabrication processes. Using a dual-be...