ausblenden:
Schlagwörter:
Physics, Optics, physics.optics,High Energy Physics - Experiment, hep-ex, Physics, Instrumentation and Detectors, physics.ins-det
Zusammenfassung:
The Any Light Particle Search II (ALPS II) is an experiment currently being
built at DESY in Hamburg, Germany, that will use a light-shining-through-a-wall
(LSW) approach to search for axion-like particles. ALPS II represents a
significant step forward for these types of experiments as it will use 24
superconducting dipole magnets, along with dual high-finesse, 122 m long
optical cavities. This paper gives the first comprehensive recipe for the
realization of the idea, proposed over 30 years ago, to use optical cavities
before and after the wall to increase the power of the regenerated photon
signal. This concept will allow the experiment to achieve a sensitivity to the
coupling between axion-like particles and photons down to g = 2e-11 1/GeV for
masses below 0.1 meV, more than three orders of magnitude beyond the
sensitivity of previous laboratory experiments. The layout and main components
that define ALPS II are discussed along with plans for reaching design
sensitivity. A set of top level requirements for the subsystems is also
provided for the first time and includes the requirements on the coherence and
spatial mode matching of the cavity eigenmodes. An accompanying paper (Hallal,
et al [1]) offers a more in-depth description of the heterodyne detection
scheme, the first of two independent detection systems that will be implemented
in ALPS II.
