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SUMMARY:Trobada: AXEL - high pressure xenon gas TPC for neutrinoless doubl
 e beta decay search
DTSTART;VALUE=DATE-TIME:20160223T090000Z
DTEND;VALUE=DATE-TIME:20160223T100000Z
DTSTAMP;VALUE=DATE-TIME:20260630T151204Z
UID:indico-event-2710@indico.ific.uv.es
DESCRIPTION:\n    Observation of neutrinoless double beta decay (0νββ) 
 is of essential importance to reveal the nature of neutrino\, such as mass
  hierarchy\, absolute mass and especially its Majorana property. In order 
 to search for 0νββ\, we\, AXEL project\, are developing a time projecti
 on chamber filled with high pressure Xenon gas. The detector can potential
 ly achieve high energy resolution\, large target mass and strong backgroun
 d rejection power by tracking. By using gaseous xenon\, it is possible to 
 realize a high energy resolution of 0.5% at 2.5MeV (Q value)\, better than
  several % in case of liquid. The deposited energy is determined by measur
 ing the proportional scintillation lights which are generated by accelerat
 ing ionization electrons. We are developing a new readout scheme where lig
 ht-emitting region is divided to cells and emitted lights are detected by 
 MPPCs cell by cell. In addition to the robust structure\, this scheme woul
 d have uniform response in wide area because the light-emitting region and
  MPPC corresponds one-to-one\, so this scheme enables to achieve both high
  energy resolution and large size. We have produced a prototype chamber fi
 lled with 10 bar and 10 L Xe gas and evaluated the performance and obtaine
 d 5% (FWHM) energy resolution at 122 keV. This is expected to be further i
 mproved by the time of conference with new VUV-sensitive MPPCs. We will re
 port about the studies of this prototype chamber and present future plans 
 and final goals of AXEL.\n\nhttps://indico.ific.uv.es/event/2710/
LOCATION:Universe 1001-Primera-119 - Nave. Exp. Sala de Reuniones
URL:https://indico.ific.uv.es/event/2710/
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