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Axion helioscopes like the planned International Axion Observatory (IAXO) search for evidence of axions and axion-like particles (ALPs) from the Sun. A strong magnetic field is used to convert ALPs into photons via the generic ALP-photon…

仪器与探测器 · 物理学 2021-07-07 D. Unger , A. Abeln , C. Enss , A. Fleischmann , D. Hengstler , S. Kempf , L. Gastaldo

Hypothetical axion-like particles with a two-photon interaction would be produced in the Sun by the Primakoff process. In a laboratory magnetic field (``axion helioscope'') they would be transformed into X-rays with energies of a few keV.…

高能物理 - 实验 · 物理学 2012-08-27 CAST Collaboration

We explore the potential of the CERN Axion Solar Telescope (CAST) for testing the presence of large extra dimensions. The CAST experiment has originally been proposed to search for solar axions with a sensitivity supposed to provide a limit…

天体物理学 · 物理学 2009-11-10 R. Horvat , M. Krcmar , B. Lakic

We have searched for solar axions or similar particles that couple to two photons by using the CERN Axion Solar Telescope (CAST) setup with improved conditions in all detectors. From the absence of excess X-rays when the magnet was pointing…

高能物理 - 实验 · 物理学 2012-08-27 CAST Collaboration

Axions are hypothetical particles that were postulated to solve one of the puzzles arising in the standard model of particle physics, namely the strong CP (Charge conjugation and Parity) problem. The new International AXion Observatory…

仪器与探测器 · 物理学 2014-03-05 I. Shilon , A. Dudarev , H. Silva , U. Wagner , H. H. J. ten Kate

The CERN Axion Solar Telescope (CAST) is searching for solar axions using the 9.0 T strong and 9.26 m long transverse magnetic field of a twin aperture LHC test magnet, where axions could be converted into X-rays via reverse Primakoff…

天体物理学 · 物理学 2019-08-14 Kresimir Jakovcic

Axions solve the Strong CP Problem and are a cold dark matter candidate. The combined constraints from accelerator searches, stellar evolution limits and cosmology suggest that the axion mass is in the range $3 \cdot 10^{-3} > m_a >…

高能物理 - 唯象学 · 物理学 2007-05-23 Pierre Sikivie

The CAST experiment is being mounted at CERN. It will make use of a decommissioned LHC test magnet to look for solar axions through its conversion into photons inside the magnetic field. The magnet has a field of 9 Tesla and length of 10 m…

天体物理学 · 物理学 2012-08-27 CAST collaboration

The axion is a light pseudoscalar particle which suppresses CP-violating effects in strong interactions and also happens to be an excellent dark matter candidate. Axions constituting the dark matter halo of our galaxy may be detected by…

The axion offers a well-motivated solution to two fundamental questions in modern physics: the strong CP problem and the dark matter mystery. Cavity haloscopes, exploiting resonant enhancement of photon signals, provide the most sensitive…

仪器与探测器 · 物理学 2024-06-04 SungWoo Youn , Junu Jeong , Yannis K. Semertzidis

A search for solar axions has been performed using an axion helioscope which is equipped with a 2.3m-long 4T superconducting magnet, PIN-photodiode X-ray detectors, and a telescope mount mechanism to track the sun. In addition, a gas…

天体物理学 · 物理学 2008-11-26 Y. Inoue , T. Namba , S. Moriyama , M. Minowa , Y. Takasu , T. Horiuchi , A. Yamamoto

The axion is a highly motivated elementary particle which could address two fundamental questions in physics - the strong CP problem and the dark matter mystery. Experimental searches for this hypothetical particle have started to reach…

高能物理 - 唯象学 · 物理学 2021-10-28 Yannis K. Semertzidis , SungWoo Youn

Micromegas detectors are an optimum technological choice for the detection of low energy x-rays. The low background techniques applied to these detectors yielded remarkable background reductions over the years, being the CAST experiment…

Four decades after its prediction, the axion remains the most compelling solution to the Strong-CP problem and a well-motivated dark matter candidate, inspiring a host of elegant and ultrasensitive experiments based on axion-photon mixing.…

高能物理 - 实验 · 物理学 2016-02-02 Peter W. Graham , Igor G. Irastorza , Steven K. Lamoreaux , Axel Lindner , Karl A. van Bibber

We discuss the physics case for and the concept of a medium-scale axion helioscope with sensitivities in the axion-photon coupling a few times better than CERN Axion Solar Telescope (CAST). Search for an axion-like particle with these…

The existence of the axion is a unique solution for the strong CP problem, and the axion is one of the most promising candidates of the dark matter. Investigating Solar Axion by Iron-57 (ISAI) is being prepared as a complemented table-top…

The Center for Axion and Precision Physics Research (CAPP) was founded in 2013, with the ambition of shedding light on the strong CP problem and the proposed existence of axions. Much of CAPP's effort focuses on the direct detection of dark…

仪器与探测器 · 物理学 2018-02-14 Eleni Petrakou