TY - JOUR
T1 - Performance of the neutron polarimeter NPOL3 for high resolution measurements
AU - Wakasa, T.
AU - Hagihara, Y.
AU - Sasano, M.
AU - Asaji, S.
AU - Fujita, K.
AU - Hatanaka, K.
AU - Ishida, T.
AU - Kawabata, T.
AU - Kuboki, H.
AU - Maeda, Y.
AU - Noro, T.
AU - Saito, T.
AU - Sakai, H.
AU - Sakemi, Y.
AU - Sekiguchi, K.
AU - Shimizu, Y.
AU - Tamii, A.
AU - Tameshige, Y.
AU - Yako, K.
N1 - Funding Information:
We are grateful to the RCNP Ring Cyclotron crew for their efforts in providing a good quality beam. The experiments were performed at RCNP under program numbers E218 and E236. This work was supported in part by the Grant-in-Aid for Scientific Research No. 14702005 of the Ministry of Education, Culture, Sports, Science, and Technology of Japan.
PY - 2005/8/1
Y1 - 2005/8/1
N2 - We describe the neutron polarimeter NPOL3 for the measurement of polarization transfer observables Dij with a typical high resolution of ∼300 keV at Tn≃200MeV. The NPOL3 system consists of three planes of neutron detectors. The first two planes for neutron polarization analysis are made of 20 sets of one-dimensional position-sensitive plastic scintillation counters with a size of 100 cm × 10 cm × 5 cm, and they cover the area of 100×100cm2. The last plane for detecting doubly scattered neutrons or recoiled protons is made of the two-dimensional position-sensitive liquid scintillation counter with a size of 100cm×100cm×10cm. The effective analyzing powers Ay;eff and double scattering efficiencies εD.S. were measured by using the three kinds of polarized neutrons from the 2H(p→,n→)pp, 6Li(p→,n→)6Be(g.s.), and 12C(p→,n→) 12N(g.s.) reactions at Tp=198MeV. The performance of NPOL3 defined as εD.S.(Ay;eff)2 are similar to that of the Indiana Neutron POLarimeter by taking into account for the counter configuration difference between these two neutron polarimeters.
AB - We describe the neutron polarimeter NPOL3 for the measurement of polarization transfer observables Dij with a typical high resolution of ∼300 keV at Tn≃200MeV. The NPOL3 system consists of three planes of neutron detectors. The first two planes for neutron polarization analysis are made of 20 sets of one-dimensional position-sensitive plastic scintillation counters with a size of 100 cm × 10 cm × 5 cm, and they cover the area of 100×100cm2. The last plane for detecting doubly scattered neutrons or recoiled protons is made of the two-dimensional position-sensitive liquid scintillation counter with a size of 100cm×100cm×10cm. The effective analyzing powers Ay;eff and double scattering efficiencies εD.S. were measured by using the three kinds of polarized neutrons from the 2H(p→,n→)pp, 6Li(p→,n→)6Be(g.s.), and 12C(p→,n→) 12N(g.s.) reactions at Tp=198MeV. The performance of NPOL3 defined as εD.S.(Ay;eff)2 are similar to that of the Indiana Neutron POLarimeter by taking into account for the counter configuration difference between these two neutron polarimeters.
UR - http://www.scopus.com/inward/record.url?scp=22344450683&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=22344450683&partnerID=8YFLogxK
U2 - 10.1016/j.nima.2005.03.151
DO - 10.1016/j.nima.2005.03.151
M3 - Article
AN - SCOPUS:22344450683
SN - 0168-9002
VL - 547
SP - 569
EP - 582
JO - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
JF - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
IS - 2-3
ER -