0000000000856629

AUTHOR

F. Aznar

showing 2 related works from this author

Description and commissioning of NEXT-MM prototype: first results from operation in a Xenon-Trimethylamine gas mixture

2014

[EN] A technical description of NEXT-MM and its commissioning and first performance is reported. Having an active volume of ∼35 cm drift × 28 cm diameter, it constitutes the largest Micromegas-read TPC operated in Xenon ever constructed, made by a sectorial arrangement of the 4 largest single wafers manufactured with the Microbulk technique to date. It is equipped with a suitably pixelized readout and with a sufficiently large sensitive volume (∼23 l) so as to contain long (∼20 cm) electron tracks. First results obtained at 1 bar for Xenon and Trymethylamine (Xe-(2%)TMA) mixture are presented. The TPC can accurately reconstruct extended background tracks. An encouraging fu…

Enginyeria -- InstrumentsMECANICA DE LOS MEDIOS CONTINUOS Y TEORIA DE ESTRUCTURASMaterials sciencePhysics - Instrumentation and DetectorsTime projection chambersParticle tracking detectors (Gaseous detectors)chemistry.chemical_elementTrimethylamineFOS: Physical sciencesElectron7. Clean energyEngineering instrumentsTECNOLOGIA ELECTRONICAchemistry.chemical_compoundXenonOpticsWafer[PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det]InstrumentationMathematical PhysicsDetectors de radiacióTime projection chamberbusiness.industryActive volumeMicroMegas detectorInstrumentation and Detectors (physics.ins-det)Double-beta decay detectorschemistryVolume (thermodynamics)Nuclear countersFísica nuclearbusiness
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Characterization of a medium size Xe/TMA TPC instrumented with microbulk Micromegas, using low-energy gamma-rays

2014

NEXT-MM is a general-purpose high pressure (10 bar, $\sim25$ l active volume) Xenon-based TPC, read out in charge mode with an 8 cm $\times$8 cm-segmented 700 cm$^2$ plane (1152 ch) of the latest microbulk-Micromegas technology. It has been recently commissioned at University of Zaragoza as part of the R&D of the NEXT $0\nu\beta\beta$ experiment, although the experiment's first stage is currently being built based on a SiPM/PMT-readout concept relying on electroluminescence. Around 2 million events were collected during the last months, stemming from the low energy $\gamma$-rays emitted by a $^{241}$Am source when interacting with the Xenon gas ($\epsilon$ = 26, 30, 59.5 keV). The localized…

MECANICA DE LOS MEDIOS CONTINUOS Y TEORIA DE ESTRUCTURASDrift velocityPhysics - Instrumentation and DetectorsXenonTime projection chambersDouble-beta decayNuclear physicschemistry.chemical_element01 natural sciencesMicrobulkNuclear physicsTECNOLOGIA ELECTRONICASilicon photomultiplierXenon0103 physical sciencesTrimethylamineDiffusion (business)010306 general physicsInstrumentationMathematical PhysicsDetectors de radiacióPhysicsAtmospheric pressure010308 nuclear & particles physicsGamma rayMicroMegas detectorHigh pressurechemistryTime projection chamberNuclear countersFísica nuclearMicromegasBar (unit)
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