CERN Accelerating science

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1.
New solar axion search in CAST with $^4$He filling / CAST Collaboration
The CERN Axion Solar Telescope (CAST) searches for $a\to\gamma$ conversion in the 9 T magnetic field of a refurbished LHC test magnet that can be directed toward the Sun. Two parallel magnet bores can be filled with helium of adjustable pressure to match the X-ray refractive mass $m_\gamma$ to the axion search mass $m_a$. [...]
arXiv:1503.00610.- 2015-07-28 - 6 p. - Published in : Phys. Rev. D 92 (2015) 021101(R) APS Open Access article: PDF; Fulltext: PDF; External link: Preprint
2.
Improved Search for Solar Chameleons with a GridPix Detector at CAST / CAST Collaboration
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 eV to 10 keV from converted solar chameleons. [...]
arXiv:1808.00066.- 2019-01-16 - 19 p. - Published in : JCAP 1901 (2019) 032 Fulltext: PDF; Fulltext from Publisher: PDF;
3.
First Results on the Search for Chameleons with the KWISP Detector at CAST / Arguedas Cuendis, S. (CERN) ; Baier, J. (Freiburg U.) ; Barth, K. (CERN) ; Baum, S. (Royal Inst. Tech., Stockholm ; Stockholm U., OKC ; Nordita) ; Bayirli, A. (Istanbul U.) ; Belov, A. (Moscow, INR) ; Bräuninger, H. (Garching, Max Planck Inst., MPE) ; Cantatore, G. (INFN, Trieste ; Trieste U.) ; Carmona, J.M. (Zaragoza U.) ; Castel, J.F. (Zaragoza U.) et al.
We report on a first measurement with a sensitive opto-mechanical force sensor designed for the direct detection of coupling of real chameleons to matter. These dark energy candidates could be produced in the Sun and stream unimpeded to Earth. [...]
arXiv:1906.01084.- 2019-12 - 21 p. - Published in : Phys. Dark Univ. 26 (2019) 100367 Fulltext: 1-s2.0-S2212686419301517-main - PDF; 1906.01084 - PDF; Fulltext from Publisher: PDF;
4.
X-ray detection with Micromegas with background levels below 10$^{-6}$ keV$^{-1}$cm$^{-2}$s$^{-1}$ / Aune, S. (Saclay) ; Aznar, F. (Zaragoza U.) ; Calvet, D. (Saclay) ; Dafni, T. (Zaragoza U.) ; Diago, A. (Zaragoza U.) ; Druillole, F. (Saclay) ; Fanourakis, G. (Democritos Nucl. Res. Ctr.) ; Ferrer-Ribas, E. (Saclay) ; Galán, J. (Zaragoza U.) ; García, J.A. (Zaragoza U.) et al.
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 beneficiary of these developments. [...]
arXiv:1312.4282.- 2013-12-23 - 14 p. - Published in : JINST 8 (2013) C12042 Fulltext: PDF; IOP Open Access article: PDF; External link: Preprint
In : 3rd International Conference on Micro Pattern Gaseous Detectors, Zaragoza, Spain, 1 - 6 Jul 2013, pp.C12042
5.
New CAST Limit on the Axion-Photon Interaction / CAST Collaboration
During 2003--2015, the CERN Axion Solar Telescope (CAST) has searched for $a\to\gamma$ conversion in the 9 T magnetic field of a refurbished LHC test magnet that can be directed toward the Sun. In its final phase of solar axion searches (2013--2015), CAST has returned to evacuated magnet pipes, which is optimal for small axion masses. [...]
arXiv:1705.02290.- 2017-05-01 - 8 p. - Published in : Nature Phys. 13 (2017) 584-590 Fulltext: arXiv:1705.02290 - PDF; nphys4109 - PDF; External links: Nature Phys.; Fulltext
6.
Micromegas for dark matter searches: CAST/IAXO & TREX-DM experiments / Garza, J.G. (Zaragoza U.) ; Aune, S. (Saclay) ; Aznar, F. (Zaragoza U.) ; Castel, J.F. (Zaragoza U.) ; Cebrián, S. (Zaragoza U.) ; Dafni, T. (Zaragoza U.) ; Ferrer-Ribas, E. (Saclay) ; Galán, J. (Zaragoza U.) ; García, J.A. (Zaragoza U.) ; Giomataris, I. (Saclay) et al.
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 work. [...]
arXiv:1609.06459.- 2018 - 4 p. - Published in : EPJ Web Conf. 174 (2018) 01008 Fulltext: arXiv:1609.06459 - PDF; epjconf_mpgd2018_01008 - PDF; External link: Preprint
In : 4th International Conference on Micro Pattern Gaseous Detectors - MPGD2015, Trieste, Italy, 12 - 15 Oct 2015, pp.01008
7.
Search for chameleons with CAST / CAST Collaboration
In this work we present a search for (solar) chameleons with the CERN Axion Solar Telescope (CAST). This novel experimental technique, in the field of dark energy research, exploits both the chameleon coupling to matter ($\beta_{\rm m}$) and to photons ($\beta_{\gamma}$) via the Primakoff effect. [...]
arXiv:1503.04561.- 2015-07-24 - 9 p. - Published in : Phys. Lett. B 749 (2015) 172-180 Article from SCOAP3: PDF; Fulltext: PDF; External link: Preprint
8.
The International Axion Observatory IAXO. Letter of Intent to the CERN SPS committee / IAXO Collaboration
This Letter of Intent describes IAXO, the International Axion Observatory, a proposed 4th generation axion helioscope. [...]
CERN-SPSC-2013-022 ; SPSC-I-242.
- 2013. - 84 p.
Fulltext
9.
Physics potential of the International Axion Observatory (IAXO) / IAXO Collaboration
We review the physics potential of a next generation search for solar axions: the International Axion Observatory (IAXO). Endowed with a sensitivity to discover axion-like particles (ALPs) with a coupling to photons as small as $g_{a\gamma}\sim 10^{-12}$ GeV$^{-1}$, or to electrons $g_{ae}\sim$10$^{-13}$, IAXO has the potential to find the QCD axion in the 1 meV$\sim$1 eV mass range where it solves the strong CP problem, can account for the cold dark matter of the Universe and be responsible for the anomalous cooling observed in a number of stellar systems. [...]
arXiv:1904.09155.- 2019-06-24 - 82 p. - Published in : JCAP 1906 (2019) 047 Fulltext: arXiv:1904.09155 - PDF; 1904.09155 - PDF;
10.
Conceptual Design of the International Axion Observatory (IAXO) / Armengaud, E. (IRFU, Saclay) ; Avignone, F.T. (South Carolina U.) ; Betz, M. (CERN) ; Brax, P. (IRFU, Saclay) ; Brun, P. (IRFU, Saclay) ; Cantatore, G. (INFN, Trieste ; Trieste U.) ; Carmona, J.M. (Zaragoza U.) ; Carosi, G.P. (LLNL, Livermore) ; Caspers, F. (CERN) ; Caspi, S. (LBL, Berkeley) et al.
The International Axion Observatory (IAXO) will be a forth generation axion helioscope. As its primary physics goal, IAXO will look for axions or axion-like particles (ALPs) originating in the Sun via the Primakoff conversion of the solar plasma photons. [...]
arXiv:1401.3233; FERMILAB-PUB-14-476-A; BNL-106253-2014-JA.- 2014-05-12 - 47 p. - Published in : JINST 9 (2014) T05002 Fulltext: PDF; IOP Open Access article: PDF; External links: Fermilab Library Server (fulltext available); Fulltext

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