The spin-dependent total cross-section difference Ao. z has been measured at energies of 7.43, 9.57, and 11. 60 MeV for neutrons, polarized transverse to the beam momentum, transmitted through a transversely polarized proton target. In addition, the energy at which Acr~c rosses through zero has been determined in the energy range 3.65 -6.25 MeV. The measurements were carried out with a polarized TiH2 target and polarized neutrons from the H(p, n) He and H(d, n) He reactions. The cross-section differences krrr are sensitive to the strength of the S & -D l mixing parameter el . Phase-shift analyses are used to determine e& values from the data. The values are in good in agreement with NN potential models and do not support the low el values found in previous studies around 15 -20 MeV.PACS number(s): 21.30.+y, 13.75.Cs, 24.70.+s, 25.40.Dn

The NPDGamma collaboration has completed the construction of a pulsed cold neutron beam line on flight path12 at the Los Alamos Neutron Science Center (LANSCE). We describe the new beam line and characteristics of the beam. We report results of the moderator brightness and the guide performance measurements. FP12 has the highest pulsed cold neutron intensity for nuclear physics in the world.