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SUMMARY:Current status of the novel 3D SuperFGD detector for the T2K exper
 iment
DTSTART;VALUE=DATE-TIME:20221201T090000Z
DTEND;VALUE=DATE-TIME:20221201T091500Z
DTSTAMP;VALUE=DATE-TIME:20260517T214026Z
UID:indico-contribution-3127@cern.ch
DESCRIPTION:Speakers: Anna Dergacheva (Institute for Nuclear Research of t
 he Russian Academy of Sciences\, 117312 Moscow\, Russia )\nT2K (Tokai to K
 amioka) is the first long-base neutrino experiment with the concept of an 
 off-axis neutrino beam generated by a 30 GeV proton synchrotron (PS) based
  on the Japan Proton Accelerator Research Complex (J-PARC). \nThis project
  is aimed at finding of a new source of violation of charge-conjugation pa
 rity-reversal CP-symmetry in the neutrino sector - a necessary element for
  explaining physical phenomena beyond the Standard Model\, namely the bary
 on asymmetry of the Universe (the matter-antimatter disparity) and leptoge
 nesis.                                                  				\nCurrently\, 
 the T2K experiment excludes the CP-conservation ($\\delta_{CP} = 0\,\\pi$)
  at the level of 90% CL [1]. In order to increase its sensitivity to CP-vi
 olation\, it is necessary to reduce systematic uncertainties in predicting
  the number of events at the far water Cherenkov detector Super-Kamiokande
  up to 3-4% from the current level of 6-7%. Thus\, an intensive upgrade pr
 ogram of the ND280 off-axis detector was launched [2]. As a part of this u
 pgrade\, a new fully segmented 3D neutrino scintillation detector SuperFGD
   was proposed and designed. It will allow precision measurements of neutr
 ino cross-sections and significantly increase the sensitivity to CP-violat
 ion in long-base experiments.    \nSuperFGD with a total weight of about t
 wo tons\, consisting of two million optically isolated cubes\, each of the
 m with a volume of 1 cm$^3$ and with three holes for inserting wavelength 
 shifting fibers (a total of 60\,000 channels for signal readout)\, was pro
 duced in Russia and will be a key element of the new upgraded near detecto
 r of the T2K experiment. All active 56 layers of the SuperFGD and the asse
 mbly platform have been shipped to Japan in June 2022. The assembly of the
  SuperFGD was started at J-PARC in October 2022.          				\nSuch impor
 tant components of the SuperFGD detector as electronics\, mechanics\, phot
 osensors\,  LED calibration system\, DAQ are also being actively prepared 
 and will be discussed. The current status and upcoming plans for the SFGD 
 as a part of the ND280 upgrade will be presented at the conference.\n\nRef
 erences \n\n[1] K. Abe\, et al.\, Constraint on the matter-antimatter symm
 etry-violating phase in neutrino oscillations\, Nature 580 (2020) 7803\, 3
 39-344. arXiv:1910.03887. \n\n
[2] K. Abe\, et al.\, T2K ND280 Upgrade -
  Technical Design Report. arXiv:1901.03750 
[physics.ins-det].\n\nhttps:
 //indico.particle.mephi.ru/event/275/contributions/3127/
LOCATION:Hotel Intourist Kolomenskoye 4* Moskvorechye 1
URL:https://indico.particle.mephi.ru/event/275/contributions/3127/
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