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An update on the Axion Helioscopes front: current activities at CAST and the IAXO project
/ Dafni, T (Zaragoza U.) ; Arik, M (Dogus U., Kadikoy) ; Armengaud, E (IRFU, SPhN, Saclay) ; Aune, S (IRFU, Saclay) ; Avignone, F T (South Carolina U.) ; Barth, K (CERN) ; Belov, A (Moscow, INR) ; Betz, M (CERN) ; Bräuninger, H (Garching, Max Planck Inst., MPE) ; Brax, P (CERN) et al.
Although they have not yet been detected, axions and axion-like particles (ALPs) continue to maintain the interest (even increasingly so) of the rare-event searches community as viable candidates for the Dark Matter of the Universe but also as a solution for several other puzzles of astrophysics. Their property of coupling to photons has inspired different experimental methods for their detection, one of which is the helioscope technique. [...]
2016 - 6 p.
- Published in : Nucl. Part. Phys. Proc. 273-275 (2016) 244-249
In : 37th International Conference on High Energy Physics, Valencia, Spain, 2 - 9 Jul 2014, pp.244-249
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The IAXO Helioscope
/ Ferrer Ribas, E. (IRFU, Saclay) ; Armengaud, E. (IRFU, Saclay) ; Avignone, F.T. (South Carolina U.) ; Betz, M. (CERN) ; Brax, P. (IPhT, Saclay) ; Brun, P. (IRFU, Saclay) ; Cantatore, G. (INFN, Trieste ; Trieste U.) ; Carmona, J.M. (Zaragoza U.) ; Carosi, G.P. (LLNL, Livermore) ; Caspers, F. (CERN) et al.
The IAXO (International Axion Experiment) is a fourth generation helioscope with a sensitivity, in terms of detectable signal counts, at least 10(4) better than CAST phase-I, resulting in sensitivity on g(a)(γ) one order of magnitude better. To achieve this performance IAXO will count on a 8-coil toroidal magnet with 60 cm diameter bores and equipped with X-ray focusing optics into 0.20 cm(2) spots coupled to ultra-low background Micromegas X-ray detectors. [...]
2015 - 8 p.
- Published in : J. Phys.: Conf. Ser. 650 (2015) 012009
IOP Open Access article: PDF;
In : 7th Symposium on large TPCs for low-energy rare event detection, Paris, France, 15 - 17 Dec 2014, pp.012009
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The Next Generation of Axion Helioscopes: The International Axion Observatory (IAXO)
/ Vogel, J K (LLNL, Livermore) ; 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) et al.
The International Axion Observatory (IAXO) is a proposed 4 th -generation axion helioscope with the primary physics research goal to search for solar axions via their Primakoff conversion into photons of 1 – 10 keV energies in a strong magnetic field. IAXO will achieve a sensitivity to the axion-photon coupling g aγ down to a few ×10 −12 GeV −1 for a wide range of axion masses up to ∼ 0 . [...]
2015 - 8 p.
- Published in : Phys. Procedia 61 (2015) 193-200
Elsevier Open Access article: PDF;
In : 13th International Conference on Topics in Astroparticle and Underground Physics, Asilomar, CA, USA, 8 - 13 Sep 2013, pp.193-200
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Modelling the behaviour of microbulk Micromegas in Xenon/trimethylamine gas
/ Ruiz-Choliz, E. (Zaragoza U. ; LSC, Canfranc) ; González-Díaz, D. (Zaragoza U. ; LSC, Canfranc ; CERN) ; Diago, A. (Zaragoza U. ; LSC, Canfranc) ; Castel, J. (Zaragoza U. ; LSC, Canfranc) ; Dafni, T. (Zaragoza U. ; LSC, Canfranc) ; Herrera, D.C. (Zaragoza U. ; LSC, Canfranc) ; Iguaz, F.J. (Zaragoza U. ; LSC, Canfranc) ; Irastorza, I.G. (Zaragoza U. ; LSC, Canfranc) ; Luzón, G. (Zaragoza U. ; LSC, Canfranc) ; Mirallas, H. (Zaragoza U. ; LSC, Canfranc) et al.
We model the response of a state of the art micro-hole single-stage charge amplication device (`microbulk' Micromegas) in a gaseous atmosphere consisting of Xenon/trimethylamine at various concentrations and pressures. The amplifying structure, made with photo-lithographic techniques similar to those followed in the fabrication of gas electron multipliers (GEMs), consisted of a 100 um-side equilateral-triangle pattern with 50 um-diameter holes placed at its vertexes. [...]
arXiv:1506.05077.-
2015-11-01 - 10 p.
- Published in : Nucl. Instrum. Methods Phys. Res., A 799 (2015) 137-146
Elsevier Open Access article: PDF; Fulltext: PDF; External link: Preprint
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Low-background X-ray detection with Micromegas for axion research
/ Garcia, J A (Zaragoza U.) ; Dafni, T (Zaragoza U.) ; Diago, A (Zaragoza U.) ; Ferrer-Ribas, E (IRFU, Saclay) ; Galán, J (IRFU, Saclay) ; Gardikiotis, A (Patras U.) ; Giomataris, I (IRFU, Saclay) ; Garza, J G (Zaragoza U.) ; Iguaz, F J (Zaragoza U.) ; Irastorza, I G (Zaragoza U.) et al.
We have studied low-background techniques in order to improve the background level for Micromegas detectors. These detectors are good candidates for rare event searches thanks to the low mass and the radiopurity of the materials used in the construction; moreover they have good discrimination capabilities. [...]
2013
- Published in : J. Phys.: Conf. Ser. 460 (2013) 012003
In : 6th Symposium on large TPCs for low-energy rare event detection, Paris, France, 17 - 19 Dec 2012, pp.012003
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Future axion searches with the International Axion Observatory (IAXO)
/ Irastorza, I G (Zaragoza U.) ; Avignone, F T (South Carolina U.) ; Cantatore, G (INFN, Trieste ; Trieste U.) ; Carmona, J M (Zaragoza U.) ; Caspi, S (CERN) ; Cetin, S A (Dogus U., Kadikoy) ; Christensen, F E (Denmark, Tech. U.) ; Dael, A (IRFU, Saclay) ; Dafni, T (Zaragoza U.) ; Davenport, M (CERN) et al.
The International Axion Observatory (IAXO) is a new generation axion helioscope aiming at a sensitivity to the axion-photon coupling of gaγ few × 10−12 GeV−1, i.e. 1–1.5 orders of magnitude beyond the one achieved by CAST, currently the most sensitive axion helioscope. [...]
2013
- Published in : J. Phys.: Conf. Ser. 460 (2013) 012002
In : 6th Symposium on large TPCs for low-energy rare event detection, Paris, France, 17 - 19 Dec 2012, pp.012002
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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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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
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