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Related papers: Probing eV-mass scale axions with a Micromegas det…

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We have searched for solar axions with a detector which consists of a 4T x 2.3m superconducting magnet, PIN-photodiode X-ray detectors, and an altazimuth mount to track the sun. The conversion region is filled with cold helium gas which…

Astrophysics · Physics 2011-04-11 Y. Inoue , M. Minowa , Y. Akimoto , R. Ota , T. Mizumoto , A. Yamamoto

We report on the construction, operation experience, and preliminary background measurements of an InGrid detector, i.e. a MicroMegas detector with CMOS pixel readout. The detector was mounted in the focal plane of the Abrixas X-Ray…

Instrumentation and Detectors · Physics 2015-09-07 Klaus Desch , Jochen Kaminski , Christoph Krieger , Michael Lupberger

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…

The gaseous Micromegas detector designed for the CERN Axion search experiment CAST, operated smoothly during Phase-I, which included the 2003 and 2004 running periods. It exhibited linear response in the energy range of interest (1-10keV),…

Instrumentation and Detectors · Physics 2008-11-26 S. Aune , T. Dafni , G. Fanourakis , E. Ferrer Ribas , T. Geralis , A. Giganon , Y. Giomataris , I. G. Irastorza , K. Kousouris , K. Zachariadou

A search for solar axions has been performed using an axion helioscope which is equipped with a 2.3m x 4T superconducting magnet, a gas container to hold dispersion-matching gas, PIN-photodiode X-ray detectors, and a telescope mount…

Instrumentation and Methods for Astrophysics · Physics 2010-02-03 Y. Inoue , Y. Akimoto , R. Ohta , T. Mizumoto , A. Yamamoto , M. Minowa

An X-ray detector based on the combination of an integrated Micromegas stage with a pixel chip has been built in order to be installed at the CERN Axion Solar Telescope. Due to its high granularity and spatial resolution this detector…

Instrumentation and Detectors · Physics 2014-10-02 Christoph Krieger , Klaus Desch , Jochen Kaminski , Michael Lupberger , Theodoros Vafeiadis

One of the three X-ray detectors of the CAST experiment searching for solar axions is a Time Projection Chamber (TPC) with a multi-wire proportional counter (MWPC) as a readout structure. Its design has been optimized to provide high…

We have searched for axions which could have been produced in the solar core using an axion helioscope with a 2.3m-long 4T superconducting magnet. Axion mass region up to m_a=0.26eV was newly explored by introducing dispersion-matching gas.…

Astrophysics · Physics 2016-11-03 Y. Inoue , T. Namba , S. Moriyama , M. Minowa , Y. Takasu , T. Horiuchi , A. Yamamoto

The most compelling candidates for Dark Matter to day are WIMPs and axions. The applicability of gasesous Time Projection Chambers (TPCs) with Micromesh Gas Structures (Micromegas) to the search of these particles is explored within this…

Sunset solar axions traversing the intense magnetic field of the CERN Axion Solar Telescope (CAST) experiment may be detected in a Time Projection Chamber (TPC) detector, as X-rays signals. These signals could be masked, however, by the…

The axion is a hypothetical elementary particle that could solve the long-standing strong CP problem in particle physics and the dark matter mystery in the cosmos. Due to the stimulation of the ambient photons, the axion dark matter decay…

High Energy Physics - Phenomenology · Physics 2024-09-27 Ariel Arza , Quan Guo , Lei Wu , Qiaoli Yang , Xiaolong Yang , Qiang Yuan , Bin Zhu

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…

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.…

High Energy Physics - Experiment · Physics 2016-02-02 Peter W. Graham , Igor G. Irastorza , Steven K. Lamoreaux , Axel Lindner , Karl A. van Bibber

Orbiting $\gamma$-detectors combined with the magnetic field of the Earth or the Sun can work parasitically as cosmic axion telescopes. The relatively short field lengths allow the axion-to-photon conversion to be coherent for $m_{axion}…

Astrophysics · Physics 2009-10-30 K. Zioutas , D. J. Thompson , E. A. Paschos

As part of the T-REX project, a number of R&D and prototyping activities have been carried out during the last years to explore the applicability of Micromegas-read gaseous TPCs in rare event searches like double beta decay (DBD), axion…