126742 20250722154012.0 doi 10.1088/1748-0221/17/07/P07032 sideral 130321 ART-2022-130321 eng Iguaz, F. J. (orcid)0000-0001-6327-9369 Microbulk Micromegas in non-flammable mixtures of argon and neon at high pressure 2022 Access copy available to the general public Unrestricted We report on a systematic characterization of microbulk Micromegas readouts in high-pressure Ar+1%iC4H10 and Ne+2%iC4H10 mixtures. Experimental data on gain, electron transmission and energy resolution are presented for a wide range of drift and amplification voltages and pressures from 1 bar to 10 bar for the argon mixture and from 5 bar to 10 bar in the neon mixture, in steps of 1 bar. Maximum gains higher than 1.7 × 103 (1.7 × 104) in the argon (neon) mixture are measured for all pressures, without the significant decrease with pressure typically observed in other amplification structures. A competitive energy resolution at 22.1 keV, but with a slight degradation with pressure, is observed: from 10.8% at 1 bar to 15.6% FWHM at 10 bar in Ar+1%iC4H10 and from 8.3% at 5 bar to 15.0% FWHM at 10 bar in Ne+2%iC4H10. The experimental setup, procedure and the results will be presented and discussed in detail. The work is motivated by the TREX-DM experiment, that is operating in the Laboratorio Subterráneo de Canfranc with the mentioned mixtures, although the results may be of interest for other applications of time projection chambers at high pressures. info:eu-repo/grantAgreement/ES/AEI/PID2019-108122GB-C32 info:eu-repo/grantAgreement/EC/FP7/240054/EU/Novel Developments in Time Projection Chambers (TPCs) for Rare Event Searches in Underground Astroparticle EXperiments/TREX info:eu-repo/grantAgreement/EC/H2020/788781/EU/Towards the detection of the axion with the International Axion Observatory/IAXOplus This project has received funding from the European Union’s Horizon 2020 research and innovation program under grant agreement No H2020 788781-IAXOplus info:eu-repo/grantAgreement/ES/MINECO/FPA2016-76978-C3-1-P info:eu-repo/grantAgreement/ES/MINECO/PID2019-108122GB-C31 info:eu-repo/grantAgreement/ES/MINECO/PID2019-108122GB-C33 info:eu-repo/semantics/openAccess All rights reserved http://www.europeana.eu/rights/rr-f/ 1.3 2022 INSTRUMENTS & INSTRUMENTATION 52 / 63 = 0.825 2022 Q4 T3 0.65 2022 Mathematical Physics 2022 Q2 Instrumentation 2022 Q2 2.2 2022 info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion Dafni, T. Universidad de Zaragoza (orcid)0000-0002-8921-910X Canellas, C. Castel, J. F. Universidad de Zaragoza (orcid)0000-0003-3532-7540 Cebrián, S. Universidad de Zaragoza (orcid)0000-0002-6948-5101 Garza, J. G. García Irastorza, I. Universidad de Zaragoza (orcid)0000-0003-1163-1687 Luzón, G. Universidad de Zaragoza (orcid)0000-0002-5352-1884 Mirallas, H. Universidad de Zaragoza (orcid)0000-0002-9951-8680 Ruiz-Chóliz, E. (orcid)0000-0002-2417-7121 2004 X Universidad de Zaragoza Dpto. Física Teórica Proy. investigación HCA 2004 390 Universidad de Zaragoza Dpto. Física Teórica Área Física Atóm.Molec.y Nucl. 17, 7 (2022), P07032 [11 pp.] Journal of Instrumentation Journal of Instrumentation 1748-0221 1291727 http://zaguan.unizar.es/record/126742/files/texto_completo.pdf Postprint 1536120 http://zaguan.unizar.es/record/126742/files/texto_completo.jpg?subformat=icon icon Postprint oai:zaguan.unizar.es:126742 articulos driver 2025-07-22-15:35:44 ARTICLE