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SUMMARY:Effect of MOX Fuel Loading on the Antineutrino Emission of the BN-
 800 Fast Reactor
DTSTART;VALUE=DATE-TIME:20261028T140500Z
DTEND;VALUE=DATE-TIME:20261028T142000Z
DTSTAMP;VALUE=DATE-TIME:20261026T014417Z
UID:indico-contribution-6238@cern.ch
DESCRIPTION:Speakers: Valerie Vakulenko ()\nFor the first time\, the elect
 ron-antineutrino flux and energy spectrum of the BN-800 fast reactor are s
 tudied during fuel burnup for different core loading configurations. Three
  core configurations containing 16%\, 50%\, and 100% mixed-oxide (MOX) fue
 l are considered.The study of antineutrino emission from fast reactors wit
 h different fuel compositions is of interest both for understanding the fo
 rmation of the reactor antineutrino signal and for developing non-invasive
  monitoring methods. An approximately 198-effective-day fuel cycle at a no
 minal thermal power of 2100 MW is simulated using the KIR-C software packa
 ge. The calculated fission and neutron-capture reaction rates are used to 
 study changes in the isotopic composition of the antineutrino signal\, the
  integral flux\, and the energy spectrum during fuel burnup. Increasing th
 e MOX fuel fraction leads to a substantial redistribution of the fission c
 ontributions of uranium and plutonium isotopes\; for the full-MOX core\, a
 pproximately 82% of all fissions occur in 239Pu. The antineutrino flux and
  the shape of the energy spectrum depend on the core composition\, while t
 he differences relative to the VVER-1000 increase with increasing MOX fuel
  fraction. At the same time\, the time evolution of the BN-800 antineutrin
 o spectrum remains weak for all three configurations: changes in the spect
 ral characteristics over the considered fuel cycle do not exceed a few per
 cent.\n\nhttps://indico.particle.mephi.ru/event/626/contributions/6238/
LOCATION: Conference Hall 4
URL:https://indico.particle.mephi.ru/event/626/contributions/6238/
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