The alignment of the C3 Accelerator Structures with the Rasnik alignment system
Harry van der Graaf (Nikhef, TU Delft - Applied Sciences)
Niels van Bakel (Nikhef)
Bram Bouwens (Amsterdam Scientific Instruments ASI)
Martin Breidenbach (Stanford Synchrotron Laboratory)
Andrew Haase (Stanford Synchrotron Laboratory)
Joris van Heijningen (Université Catholique de Louvain)
Anoop Nagesh Koushik (Universiteit Antwerpen)
Emilio Nanni (Stanford Synchrotron Laboratory)
Tristan du Pree (University of Twente, Nikhef)
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Abstract
The Rasnik 3-point alignment system, widely applied in particle physics experiments and in the instrumentation of gravitational wave experiments, can be used as N-point alignment system by'leap frog' N individual 3-point systems. The conceptual implementation of Rasnik chains in C3 is presented. Then, the proper operation of a laser diode and a CMOS image sensor in liquid nitrogen has been verified. Finally, next plans for testing a small but complete system, immersed in liquid nitrogen, are presented.