000070255 001__ 70255
000070255 005__ 20200217133051.0
000070255 0247_ $$2doi$$a10.1051/epjconf/201817401008
000070255 0248_ $$2sideral$$a105342
000070255 037__ $$aART-2018-105342
000070255 041__ $$aeng
000070255 100__ $$aGarza, J.G.
000070255 245__ $$aMicromegas for dark matter searches: CAST/IAXO & TREX-DM experiments
000070255 260__ $$c2018
000070255 5060_ $$aAccess copy available to the general public$$fUnrestricted
000070255 5203_ $$aThe 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. Both particles would produce an extremely low rate at very low energies in particle detectors. Micromegas detectors can provide both low background rates and low energy threshold, due to the high granularity, radiopurity and uniformity of the readout. Small (few cm wide) Micromegas detectors are used to image the ax ion-induced x-ray signal expected in the CERN Axion Solar Telescope (CAST) experiment. We show the background levels obtained in CAST and the prospects to further reduce them to the values required by the Internation Axion Observatory (IAXO). We also present TREX-DM. a scaled-up version of the Micromegas used in axion research, but this time dedicated to the low-mass WIMP detection. TREX-DM is a high-pressure Micromegas-based TPC designed to host a few hundreds of grams of light nuclei (argon or neon) with energy thresholds potentially at the level of 100 eV. The detector is described in detail, as well as the results of the commissioning and characterization phase on surface. Besides, the background model of TREX-DM is presented, along with the anticipated sensitivity of this search, which could go beyond current experimental limits.
000070255 536__ $$9info:eu-repo/grantAgreement/ES/MINECO/FPA2013-41085$$9info:eu-repo/grantAgreement/ES/MINECO/Consolider-Ingenio/CSD2007-00042$$9info:eu-repo/grantAgreement/EC/FP7/ 240054/EU/Novel Developments in Time Projection Chambers (TPCs) for Rare Event Searches in Underground Astroparticle EXperiments/TREX
000070255 540__ $$9info:eu-repo/semantics/openAccess$$aby$$uhttp://creativecommons.org/licenses/by/3.0/es/
000070255 592__ $$a0.182$$b2018
000070255 593__ $$aPhysics and Astronomy (miscellaneous)$$c2018
000070255 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion
000070255 700__ $$aAune, S.
000070255 700__ $$aAznar, F.
000070255 700__ $$0(orcid)0000-0003-3532-7540$$aCastel, J.F.$$uUniversidad de Zaragoza
000070255 700__ $$0(orcid)0000-0002-6948-5101$$aCebrian, S.$$uUniversidad de Zaragoza
000070255 700__ $$0(orcid)0000-0002-8921-910X$$aDafni, T.$$uUniversidad de Zaragoza
000070255 700__ $$aFerrer-Ribas, E.
000070255 700__ $$aGalan, J.
000070255 700__ $$aGarcia, J.A.
000070255 700__ $$aGiomataris, I.
000070255 700__ $$0(orcid)0000-0001-6327-9369$$aIguaz, F.J.
000070255 700__ $$0(orcid)0000-0003-1163-1687$$aIrastorza, I.G.$$uUniversidad de Zaragoza
000070255 700__ $$aLuzon, G.
000070255 700__ $$0(orcid)0000-0002-9951-8680$$aMirallas, H.$$uUniversidad de Zaragoza
000070255 700__ $$aPapaevangelou, T.
000070255 700__ $$aPeiro, A.
000070255 700__ $$aTomas, A.
000070255 700__ $$aVafeiadis, T.
000070255 7102_ $$12004$$2X$$aUniversidad de Zaragoza$$bDpto. Física Teórica$$cProy. investigación HCA
000070255 7102_ $$12004$$2390$$aUniversidad de Zaragoza$$bDpto. Física Teórica$$cÁrea Física Atóm.Molec.y Nucl.
000070255 773__ $$g174 (2018), 01008 [4 pp]$$pEPJ web conf.$$tEPJ web of conferences$$x2101-6275
000070255 8564_ $$s300035$$uhttps://zaguan.unizar.es/record/70255/files/texto_completo.pdf$$yVersión publicada
000070255 8564_ $$s113562$$uhttps://zaguan.unizar.es/record/70255/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada
000070255 909CO $$ooai:zaguan.unizar.es:70255$$particulos$$pdriver
000070255 951__ $$a2020-02-17-12:42:59
000070255 980__ $$aARTICLE