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T: Fachverband Teilchenphysik

T 57: Axionen II

T 57.2: Vortrag

Mittwoch, 27. März 2019, 16:20–16:35, S09

Control and Alignment of the Optical Systems in the ALPS II Experiment — •Todd Kozlowski and Aaron Spector for the ALPS collaboration — DESY, Hamburg, Germany

The Any Light Particle Search (ALPS) IIc is a light-shining-through-a-wall experiment that aims to detect laboratory-generated axions and axion-like-particles (ALPs) via axion-photon coupling. In order to improve detection sensitivity, the experiment requires two optical cavities to maintain simultaneous resonance with the generated axion field. One of the resonators, the production cavity (PC), increases the laser field amplitude on one side of a light-tight barrier by a factor of 70 (5000 in power) which improves the amplitude of the generated axion field. The second resonator, the regeneration cavity (RC), on the other side of the light-tight barrier builds up the regenerated laser field by a factor of 200 (40000 in power) which can then either be detected as the modulation of a reference field or counted by a photon counter. I will discuss the envisioned length and alignment sensing and control scheme of ALPS.