JAEA-Conf 2011-002 - 日本原子力研究開発機構

Fig. 10: The PHITS2 calculation geometry.
μ
×
×
×
θ
Fig. 11: Comparison of differential neutron yield.
4. FUTURE WORKS
The proton acceleration experiment will be arranged before deuteron acceleration in the IFMIF-
EVEDA. It is helpful to see the differences of TTNY between deuteron and proton incidence. We
estimated proton induced TTNY using the PHITS2 code with JENDL-HE nuclear data library, and
compared them with measurement data of deuteron induced TTNY.
Figure 12 shows the differential neutron thick target yield of 30 ◦ for 9 MeV deuteron induced to a
copper, titanium and niobium target and that of 9 MeV proton induced to the each targets. The9MeV
proton induced TTNY is much smaller than experimental data of the 9 MeV deuteron incident one.
Figure 13 illustrates the total neutron yield for 9 MeV deuteron incident to the copper and that of
proton incidence ones. The total neutron yield is derived by energy and solid-angle integration of double
differential neutron yield. Due to lack of experimental data below 2 MeV, experimental data was extrapolated
by TALYS calculation data normalized with experimental data at 2 MeV. For copper target,
proton induced total neutron yield is 24 times smaller than deuteron induced one.
JAEA-Conf 2011-002
Fig. 12: The comparison of double differential neutron
thick target yield of 30 ◦ (p,xn) and (d,xn).
5
Fig. 13: The comparison of total neutron yield for
9 MeV deuteron incident to the copper and that of
proton incidence total neutron yield.