The Optics of the ALPS-II Experiment

Explore the cutting-edge optics of the ALPs-II experiment in this 41-minute lecture by Kanioar Karan at the Galileo Galilei Institute. Delve into the world of axions and axion-like particles, understanding their discovery potential through the innovative light shining through a wall (LSW) technique. Learn about the intricate optical cavities employed in ALPs II, their specific requirements, and the challenges they present. Gain insights into the experiment's heterodyne control and detection scheme, as well as its implementation at DESY. Examine the key components of ALPs II, including its magnets, high-power laser, central optical bench, and regeneration cavity. Follow the journey of setting up the optics for the initial science run and the crucial process of stray light hunting. Conclude with a comprehensive summary and outlook on this groundbreaking experiment in particle physics.

Intro
Axions and Axion-Like Particles
ALPS II discovery potential
Light shining through a wall (LSW) technique
ALPS II: LSW with optical cavities
ALPS II optical cavities: requirements and challenges
ALPS II Heterodyne control and detection scheme
ALPS II at DESY
ALPS II Magnets
ALPS II High Power Laser
ALPS II Central Optical Bench
ALPS II Regeneration Cavity
ALPS II optics setup for the initial science run
Stray light hunting
Summary and outlook