A5013870802- Dark Matter and Cosmic Phenomena
- Atomic and Subatomic Physics Research
- Particle physics theoretical and experimental studies
- Astrophysics and Cosmic Phenomena
- Quantum optics and atomic interactions
- Advanced Frequency and Time Standards
- Cosmology and Gravitation Theories
- Water Quality Monitoring Technologies
- Hydrological Forecasting Using AI
Institute of Physics, Academia Sinica
2022-2025
National Chung Hsing University
2022
National Central University
2022
National Synchrotron Radiation Research Center
2022
Vietnam National University, Hanoi
2022
This Letter reports on the first results from Taiwan Axion Search Experiment with a Haloscope, search for axions using microwave cavity at frequencies between 4.707 50 and 4.798 15 GHz. Apart nonaxion signals, no candidates significance of more than 3.355 were found. The experiment excludes models axion-two-photon coupling $|{g}_{a\ensuremath{\gamma}\ensuremath{\gamma}}|\ensuremath{\gtrsim}8.1\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}14}\text{ }\text{...
In an axion haloscope, the weak photon signal, theoretically converted from axions, is captured by a detection cavity. The signal cavity too to be acquired receiver. amplification chain assists acquisition amplifying and requires accurate gain calibration. Typically, readout line calibrated using Y-factor method, involving switch that directs either or calibration chain. lines may have different transmissions, which leads results being less accurate. response, we propose method eliminates...
We report on a holoscope axion search experiment near 19.6 µeV from the Taiwan Axion Search Experiment with Haloscope collaboration. This is carried out via frequency-tunable cavity detector volume V = 0.234 liter in magnetic field B0 8 T. With signal receiver that has system noise temperature Tsys ≅ 2.2 K and an time of about one month, excludes values axion–photon coupling constant gaγγ ≳ 8.1 × 10−14 GeV−1, factor 11 above Kim–Shifman–Vainshtein–Zakharov benchmark model, at 95% confidence...
Much of the earth’s surface is covered by water. As was pointed out in 2020 edition World Water Development Report, climate change challenges sustainability global water resources, so it important to monitor quality preserve sustainable resources. Quality can be related structure crystal, solid-state water, methods understand crystals help improve quality. a first step, crystal exploratory analysis has been initiated with cooperation Emoto Peace Project (EPP). The 5K EPP dataset created as...
This paper presents the analysis of data acquired during first physics run Taiwan Axion Search Experiment with Haloscope (TASEH), a search for axions using microwave cavity at frequencies between 4.70750 and 4.79815 GHz. The were collected from October 13, 2021 to November 15, 2021, are referred as CD102 data. TASEH excludes models axion-two-photon coupling $|{g}_{a\ensuremath{\gamma}\ensuremath{\gamma}}|\ensuremath{\gtrsim}8.1\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}14}\text{...
In an axion haloscope, the weak photon signal, theoretically converted from axions, is captured by a detection cavity. The amplification chain assists signal receiver to read cavity and requires accurate calibration. Typically, readout line calibrated using Y-factor method, involving switch that directs either or calibration line. However, this introduces several disadvantages. response, we propose method eliminates need for switch. approach, temperature decoupled its incoming noise source...