1. Resonant laser power build-up in ALPS—A “light shining through a wall” experiment
- Author
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Ehret, Klaus, Frede, Maik, Ghazaryan, Samvel, Hildebrandt, Matthias, Knabbe, Ernst-Axel, Kracht, Dietmar, Lindner, Axel, List, Jenny, Meier, Tobias, Meyer, Niels, Notz, Dieter, Redondo, Javier, Ringwald, Andreas, Wiedemann, Günter, and Willke, Benno
- Subjects
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LASERS in physics , *SIMULATION methods & models , *PHYSICS experiments , *PHOTONS , *OSCILLATIONS , *SUPERCONDUCTIVITY , *PARTICLE accelerators , *WEAK interactions (Nuclear physics) , *MAGNETIC dipoles - Abstract
Abstract: The ALPS Collaboration runs a “light shining through a wall” (LSW) experiment to search for photon oscillations into “weakly interacting sub-eV particles” (WISPs) inside of a superconducting HERA dipole magnet at the site of DESY. In this paper we report on the first successful integration of a large-scale optical resonant cavity to boost the available power for WISP production in this type of experiments. The key elements are a frequency tunable narrow line-width continuous wave laser acting as the primary light source and an electronic feed-back control loop to stabilize the power build-up. We describe and characterize our apparatus and demonstrate the data analysis procedures on the basis of a brief exemplary run. [Copyright &y& Elsevier]
- Published
- 2009
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