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SUMMARY:Track imaging in noble liquid detectors
DTSTART;VALUE=DATE-TIME:20210916T173000Z
DTEND;VALUE=DATE-TIME:20210916T174500Z
DTSTAMP;VALUE=DATE-TIME:20260306T122046Z
UID:indico-contribution-91@indico.physics.ucsd.edu
DESCRIPTION:Speakers: Valerio Pia ()\nLarge volumes of liquid Argon or Xen
 on constitute an excellent medium for the detection of Neutrino interactio
 ns and for Dark Matter searches. The established readout method for large 
 noble liquid detectors is based on charge collection in a Time Projection 
 Chamber\, triggered by the scintillation light produced by Ar (128~nm) or 
 Xe (185~nm).\nThis scintillation light can however also be used to attempt
  a direct reconstruction of charged particle tracks\, provided the photon 
 sensor has imaging capabilities. The primary benefit of this technique is 
 rate capability\, especially relevant for the near detectors of accelerato
 r based experiments.\nThe design of such an imaging detector\, however\, p
 resents several challenges: the performance of both current single photon 
 detectors and conventional optical elements in the Vacuum UV is generally 
 inferior compared to the visible spectrum\; a large number of densely pack
 ed detectors and their dedicated readout electronics must be operated at c
 ryogenic temperatures\; the optical system must provide a sufficiently wid
 e and deep field of vision and a large aperture\, in order to minimize the
  amount of detectors for a given fiducial volume.\nSilicon PhotoMultiplier
 s (SiPMs) are the ideal photosensor for this application\, since their noi
 se is suppressed at cryogenic temperature and they can be fabricated in la
 rge arrays composed of many small pixels\; their lower VUV sensitivity is 
 also being addressed by suppliers with optimized designs. The large channe
 l count requires the development of a dedicated cryogenic ASIC\, for which
  several steps have been taken. Multiple options exist for optical systems
 \, which offer different compromises between ease of construction\, perfor
 mance and deployment on specific detector geometries. In this contribution
  we will present the simulation of novel optical systems and the performan
 ce of small scale prototypes. The progress on larger prototypes and the si
 mulation of realistic detector geometries will also be reported.\n\nhttps:
 //indico.physics.ucsd.edu/event/1/contributions/91/
LOCATION:
URL:https://indico.physics.ucsd.edu/event/1/contributions/91/
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