Joint Institute for Nuclear Research Relativistic ... - Index of - JINR

RECENT RESULTS OF THE STUDY OF ADS WITH 500kg NATURAL URANIUM
TARGET ASSEMBLY QUINTA IRRADIATED BY DEUTERONS WITH ENERGIES
FROM 1 TO 8 GeV AT JINR NUCLOTRON
1
J.Adam, A.Baldin, A.Berlev, W.Furman, N.Gundorin, Zh.Hushvaktov, M.Kadykov,
Yu.Kopatch, E.Kostyukhov, I.Kudashkin, A.Makan’kin, I.Mar’in, A.Polansky, A.Rogov,
V.Pronskikh, V.Schegolev, A.Solnyshkin, V.Tsupko-Sitnikov, S.Tyutyunnikov,
A.Vishnevsky, N.Vladimirova, A.Wojciechowski, L.Zavorka
2
V.Chilap, A.Chinenov, B.Dubinkin, B.Fonarev, M.Galanin, V.Kolesnikov, S.Solodchenkova
3
M.Artyushenko, V.Sotnikov, V.Voronko
4
A.Khilmanovich, B.Martsynkevich
5
S.Kislitsin, T.Kvochkina, S.Zhdanov
6
K.Husak, S.Korneev, A.Potapenko, A.Safronova, I.Zhuk
7
M.Suchopar, O.Svoboda, J.Vrzalova, V.Wagner
8
Ch.Stoyanov, O.Yordanov, P.Zhivkov
9
M.Shuta, E.Strugalska-Gola, S.Kilim, M.Bielevicz
10
W.Westmeier
11
M.Manolopoulou
12
S.R.Hashemi-Nezhad
1
Joint Institute for Nuclear Research, Dubna, Russia;
2
Center Physical and Technical Projects “Atomenergomash”, Moscow, Russia;
3
NSC Kharkov Institute of Physics and Technology, Kharkov, Ukraine;
4
Stepanov Institute of Physics, Minsk, Belarus;
5
Institute of Nuclear Physics NNC RK, Almaty, Kazakhstan;
6
Joint Institute for Power and Nuclear Research- Sosny near Minsk, Belarus;
7
Nuclear Physics Institute, Rez near Prague, Czech Republic;
8
Institute of Nuclear Research and Nuclear Energy, Sofia, Bulgaria;
9
National Centre for Nuclear Research, Otwock-Swerk, Poland;
10
Gesellschaft for Kernspektrometrie, Ebsdorfergrund-Mölln, Germany;
11
Aristotle Uni-Thessaloniki, Thessaloniki, Greece;
12
School of Physics, University of Sydney, Australia
The study of basic properties of the ADS presented in the previous Baldin seminar
[1] was continued during the 2011-2012. For these experiments, uranium target assembly has
been upgraded: the entrance window was created to reduce the albedo of the incident beam
and a section was added to keep the effective mass of uranium to the beam axis. The new
target assembly with a mass of 500 kg of natural uranium metal (diameter ~30cm and length
65cm) was named QUINTA. During the three runs of JINR NUCLOTRON the target
assembly (TA) QUINTA was irradiated by deuterons with energies from 1 to 8 GeV and the
total number of deuterons on the target of (3-5) 10 13 at each energy.
There were measured the energy spectra of prompt neutrons inside and outside the
target assembly and the time spectra of fission delayed neutrons (DN) between accelerator
bursts. Beside that the spatial distributions of fission rates inside TA have been measured with
aid of solid state track detectors and independently by activation method. The last method was
used for measurements of 239 Pu nuclei production. All these measurements were made with
the original TA QUINTA as well as with TA surrounded by a 10 cm thick lead blanket.
Total numbers of fissions and produced 239 Pu nuclei obtained by integration over
QUINTA volume and normalized to one incident deuteron and one GeV were constant within
37