4 papers
Improved Search for Solar Chameleons with a GridPix Detector at CAST
V. Anastassopoulos, S. Aune, K. Barth +66
We report on a new search for solar chameleons with the CERN Axion Solar Telescope (CAST). A GridPix detector was used to search for soft X-ray photons in the energy range from 200…
Cavity optomechanics with feedback--controlled in--loop light
Stefano Zippilli, Nenad Kralj, Massimiliano Rossi +2
It has recently been shown [Rossi et al., Phys. Rev. Lett. 119, 123603 (2017); ibid. 120, 073601 (2018)] that feedback--controlled in--loop light can be used to enhance the efficie…
Enhancement of three-mode optomechanical interaction by feedback-controlled light
Nenad Kralj, Massimiliano Rossi, Stefano Zippilli +6
We realise a feedback-controlled optical Fabry-Perot cavity in which the transmitted cavity output is used to modulate the input amplitude fluctuations. The resulting phase-depende…
New CAST Limit on the Axion-Photon Interaction
CAST collaboration, V. Anastassopoulos, S. Aune +64
During 2003--2015, the CERN Axion Solar Telescope (CAST) has searched for conversion in the 9 T magnetic field of a refurbished LHC test magnet that can be directed toward…