Aim of the project

1) Finalize the new test beamline for proton beam writing at CIBA through new collimator design and target manipulation with a precision stage. 2) Develop a platform technology for the integration of nanowires into functional systems. This project is part of a larger project in which we plan to transform the basic test beam line into the best proton beam writing facility in the world, which will serve as a platform technology for the fabrication of integrated nanowires. 1) Perform calculations to optimize a next generation spaced triplet magnetic quadrupole lens design. 2) Built the new lens system based on these calculations 3) Build a “basic ” test beam line to evaluate the performance of these new magnetic quadrupole lenses. 1) New lens design: Our lens calculations have shown that a system with 4 lenses will give a high system demagnification. The system demagnification will depend on the image distance used in the system see figure 1. With the new PI stage and the newly developed target chamber the image distance can be varied over a 20 mm range from 25 up to 45 mm from the last quardupole lens (Q4). This will give a system demagnification of 300 up to 600 in both x and y. Figure 1 lens set-up for the new proton beam writing beam line at CIBA. Beam optics calculations Beam optics lens calculations have been performed, the results are shown in Figure 2 and Table 1. In Table 2 the characteristics for the current PBW beam line are given