TY - JOUR
T1 - Measurements and parameterization of neutron energy spectra from targets bombarded with 120 GeV protons
AU - Kajimoto, T.
AU - Shigyo, N.
AU - Sanami, T.
AU - Iwamoto, Y.
AU - Hagiwara, M.
AU - Lee, H. S.
AU - Soha, A.
AU - Ramberg, E.
AU - Coleman, R.
AU - Jensen, D.
AU - Leveling, A.
AU - Mokhov, N. V.
AU - Boehnlein, D.
AU - Vaziri, K.
AU - Sakamoto, Y.
AU - Ishibashi, K.
AU - Nakashima, H.
N1 - Funding Information:
This work was supported by Grant-in-Aid for Scientific Research (KAKENHI No. 21360473 ) of Japan. Fermilab is funded as a U.S. Department of Energy national laboratory and operated under contract DE-AC02-07CH11359 by the Fermi Research Alliance, LLC .
PY - 2014/10/15
Y1 - 2014/10/15
N2 - The energy spectra of neutrons were measured by a time-of-flight method for 120 GeV protons on thick graphite, aluminum, copper, and tungsten targets with an NE213 scintillator at the Fermilab Test Beam Facility. Neutron energy spectra were obtained between 25 and 3000 MeV at emission angles of 30°, 45°, 120°, and 150°. The spectra were parameterized as neutron emissions from three moving sources and then compared with theoretical spectra calculated by PHITS and FLUKA codes. The yields of the theoretical spectra were substantially underestimated compared with the yields of measured spectra. The integrated neutron yields from 25 to 3000 MeV calculated with PHITS code were 16-36% of the experimental yields and those calculated with FLUKA code were 26-57% of the experimental yields for all targets and emission angles.
AB - The energy spectra of neutrons were measured by a time-of-flight method for 120 GeV protons on thick graphite, aluminum, copper, and tungsten targets with an NE213 scintillator at the Fermilab Test Beam Facility. Neutron energy spectra were obtained between 25 and 3000 MeV at emission angles of 30°, 45°, 120°, and 150°. The spectra were parameterized as neutron emissions from three moving sources and then compared with theoretical spectra calculated by PHITS and FLUKA codes. The yields of the theoretical spectra were substantially underestimated compared with the yields of measured spectra. The integrated neutron yields from 25 to 3000 MeV calculated with PHITS code were 16-36% of the experimental yields and those calculated with FLUKA code were 26-57% of the experimental yields for all targets and emission angles.
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U2 - 10.1016/j.nimb.2014.07.019
DO - 10.1016/j.nimb.2014.07.019
M3 - Article
AN - SCOPUS:84906282450
SN - 0168-583X
VL - 337
SP - 68
EP - 77
JO - Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
JF - Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
ER -