CHiP Annual Meeting on 2023

Session

Dark Matter (TASEH)

24 Nov 2023, 14:30

Meeting room A on the 2nd floor (Evergreen Palace Hotel (Chiayi))

12. Current status and upcoming plans of the TASEH experiment

Yung-Fu Chen

24/11/2023, 14:30

QCD Axion is a hypothesized particle for solving CP symmetry preserving problem in the strong interaction, and is also considered as a promising candidate for dark matter halo. TASEH (Taiwan Axion Search Experiment with Haloscope) searches dark matter axions based on a haloscope setup, consisting of a frequency-tunable microwave cavity detector in a strong magnetic field and a signal receiver....

13. Implementing Josephson parametric amplifier in the TASEH axion detection chain

Wei-Cheng Hung

24/11/2023, 14:50

Axion, a dark matter candidate, can convert to a photon under a strong magnetic field. For the mass range of 10–25 μeV the TASEH experiment aims to search, the axion-converted photons can be detected by a set of RF amplifiers and signal analyzers. The electronic noise is against the signal readout efficiency. Josephson parametric amplifier (JPA) has the potential to provide quantum-limited...

14. Large volume microwave cavity design for the TASEH experiment

Ping-I Wu

24/11/2023, 15:10

The TASEH experiment is building a haloscope with a resonant cavity to search for axions. The sensitivity to the axion-photon coupling 𝑔_{𝑎𝛾𝛾} can be enhanced with better cavity performance. We are exploring a new design of tunable microwave cavity in conic-shell shape, which has 7.2 times the volume of our previous cavity, and the sensitivity is expected to increase 2.8 times. The new cavity...