14-17 September 2021
America/Los_Angeles timezone

Development Towards a Camera Readout Tracking Plane for the NEXT Collaboration

Not scheduled
Light/charge readout (PMT, SiPM, WLS, electronics etc.)


Nicholas Byrnes (University of Texas Arlington)


Neutrinoless double beta decay (0𝜈𝛽𝛽) is an extremely rare nuclear decay that occurs when two neutrons in a nucleus simultaneously beta decay without producing any antineutrinos. If observed, 0𝜈𝛽𝛽 would be the rarest decay process observed, and long target half-lives of 10$^{28}$ years necessitate development of new background suppression and signal identification methodologies. The NEXT collaboration is searching for this decay using gaseous $^{136}$Xe, a xenon isotope capable of undergoing double beta decay, and is pursuing an aggressive R&D campaign to develop techniques that may allow for ton-scale detectors with effectively zero background. One such way that this is being explored is via the Camera Readout And Barium-tagging (CRAB) technique, which will use a VUV Image Intensifier coupled to a single high speed, high quantum efficiency TimePix camera to directly image the VUV track light while coincidentally detecting the barium daughter isotope produced when $^{136}$Xe decays. This approach is intended to circumvent technical challenges associated with densely multiplexed SiPM planes for tracking and yields a detector concept that can be upgraded to incorporate to a low voltage barium tagging cathode in a second phase. We will show preliminary results from CRAB-0, a system at the University of Texas at Arlington using a Hamamatsu imagEM X2 EMCCD camera coupled into a prototype VUV Image Intensifier, imaging in 10 bars of Xe gas with high resolution in two dimensions; and discuss progress toward the demonstrator phase, NEXT-CRAB, at Argonne National Laboratory that will enable three dimensional track imaging with the VUV without internal electronics or sensors.

Primary author

Nicholas Byrnes (University of Texas Arlington)

Presentation Materials

There are no materials yet.