1. Nikhef carries out research, coordinates and supports activities in experimental particle and astroparticle physics in the Netherlands. The mission of Nikhef is to study the interactions and structure of elementary particles and fields at the smallest distance scale and the highest attainable energy, and to connect the findings of today's research in a qualitative and preferably quantitative manner to the processes occurring in the early Universe, 13.7 billion years ago.
3. To monitor the alignment accuracy, Nikhef and Sensiflex have developed a high precision monitoring system. The red alignment system Nikhef (Rasnik) creates an image of a coded mask on a CMOS sensor by means of a lens. The relative position in the X and Y direction of the coded mask is measured with respect to the optical centre. Moreover, the relative rotation and position of the lens along the Z-axis can be calculated. The system has a measurement range of several centimeters with an absolute accuracy of less than 1 micron.
2. This kind of research frequently demand teamwork in a large international collaboration, development of new detection methods and high accuracy in design and manufacturing of complex and unique structures. This requires expertise in design, precision mechanics as well as specific knowledge of materials, thermodynamics, heat transfer, and electronics. One of the four LHC experiments is the ATLAS experiment. The ATLAS detector contains six different subsystems that indentify particles and measure their momentum and energy. Nikhef contributed to the design and construction of one of those six subsystems, the ATLAS SemiConductor Tracker (SCT), and the ATLAS Muon Spectrometer.
4. Depending on application and customer requirements accuracy can go up to 1 µm, with a displacement of 0,5 - 1 metres in almost all directions. Accuracy and length requirements are easily adapted to meet customer requirements. Costs are reduced by using conventional technology with advanced software. This makes Sensiflex the sensible flexible solution.