Resonant laser power build-up in ALPS—A “light shining through a wall” experiment
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.
- Publication:
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Nuclear Instruments and Methods in Physics Research A
- Pub Date:
- December 2009
- DOI:
- 10.1016/j.nima.2009.10.102
- arXiv:
- arXiv:0905.4159
- Bibcode:
- 2009NIMPA.612...83E
- Keywords:
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- Physics - Instrumentation and Detectors;
- High Energy Physics - Experiment;
- High Energy Physics - Phenomenology
- E-Print:
- 16 pages, 15 figures