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SUMMARY:Boosting background suppression in the NEXT experiment through Ric
 hardson-Lucy deconvolution
DTSTART;VALUE=DATE-TIME:20210916T204500Z
DTEND;VALUE=DATE-TIME:20210916T210000Z
DTSTAMP;VALUE=DATE-TIME:20260418T140440Z
UID:indico-contribution-88@indico.physics.ucsd.edu
DESCRIPTION:Speakers: Ander Simón Estévez (Ben-Gurion University of the 
 Negev)\nThe NEXT collaboration aims to observe neutrinoless double beta de
 cay in gaseous 136Xe using a high pressure gaseous Xe time projection cham
 ber with signal amplification by means of electroluminescence (EL). One of
  the advantages of the technique is that it allows for track reconstructio
 n making use of a sensor plane equipped with SiPMs located nearby the EL r
 egion. However\, the signals recorded in the TPC are degraded by electron 
 diffusion and spread of light produced in the EL process\, limiting the po
 tential of the detection scheme. \n\nWe have recently developed an improve
 d reconstruction procedure based on the Richardson-Lucy deconvolution\, an
  iterative algorithm well-known in image processing and de-blurring. Decon
 volution allows reversing the smearing mechanisms in the NEXT TPC and sign
 ificantly enhances the definition of reconstructed tracks. Consequently\, 
 detector performance is strongly boosted\, with a five-fold improvement in
  background rejection demonstrated on experimental data.\n\nIn the talk we
  will detail the algorithm application in the context of the NEXT experime
 nt with a focus on the performance in NEXT-White\, a 50 cm TPC currently o
 perating underground at Laboratorio Subterráneo de Canfranc. We will desc
 ribe the procedure applied to characterize the optical response of the cha
 mber by obtaining the point spread function that best describes the observ
 ed signals. We will also discuss the potential of the algorithm to ease th
 e tracking hardware requirements of future detector iterations.\n\nhttps:/
 /indico.physics.ucsd.edu/event/1/contributions/88/
LOCATION:
URL:https://indico.physics.ucsd.edu/event/1/contributions/88/
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