[en] The SPEAR electron synchrotron is an old and venerable facility with a history of great physics. When this storage ring was converted to serve as a full-time synchrotron light source, it was evident that the facility was due for an overhaul of its control system. Outdated hardware interfaces, custom operator interfaces, and the control computer itself were replaced with off-the-shelf distributed intelligent controllers and networked X-workstations. However, almost all applications and control functions were retained by simply rewriting the layer of software closest to each new device. The success of this upgrade prompted us to do a similar upgrade of our Injector system. Although the Injector was already running an X-windows based control system, it was non-networked and Q-bus based. By using the same Ethernet based controllers that were used at SPEAR, we were able to integrate the two systems into one that resembles the ''standard model'' for control systems, and at the same time preserve the applications software that has been developed over the years on both systems

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[en] The feasibility of using the associated particle technique for in-vivo 14 MeV neutron activation analysis has been investigated. Gamma rays following neutron inelastic scattering with N, C and O have been measured. For an average body dose level of 0.3 mSv, the precision for N, C and O has been estimated to be 2.1, 1.0 and 1.1% respectively. (author). 3 figs

[en] A facility for performing scattering experiments with 14 MeV polarized neutrons is described. The polarization is produced in an atomic beam source. The neutron polarization is found to a relative accuracy of 3%. Backgrounds are very low. (Auth.)

[en] A neutron-proton analysing power experiment at 14 MeV has been simulated using the Monte Carlo method, with the aim of investigating the effects of multiple scattering in the scatterer on the measured analysing power. Results of the simulation are compared with some experimental data. It is found that multiple-scattering effects are not the limiting factor on the accuracy of such experiments. (Auth.)

[en] The analysing power for the elastic scattering of 14.1 MeV neutrons by deuterons has been measured at 17 angles between 44.5⁰ and 161.6⁰ in the centre of mass. A polynomial fit to this data combined with that at the same energy by Preiswerk et al. and Fischer et al. has been made and compared with a similar fit to the p-d data of Duder et al. Significant differences are found over the full angular range. Similar comparisons have also been made on existing data at other energies between 8 and 50 MeV. The polynomial expansion coefficients have been determined as a function of energy and show differences between p-d and n-d scattering which vary smoothly with energy and appear to be greater than the experimental errors. (orig.)

[en] The analysing powers for the elastic scattering of 14 MeV polarised neutrons from protons and from deuterons was measured. Polarised neutrons are generated by the T(d,n)⁴He reaction, with 150 keV vector polarised deuterons on a tritiated titanium target. The deuteron polarisation is produced by a conventional atomic beam type of polarised ion source. The deuteron vector polarisation, and hence the neutron polarisation, is reversed by the switching of three R.F. transition units. The neutron polarisation is about 55% and remains within a few percent of this over several weeks. At present we infer the neutron polarisation from regular measurements of the tensor polarisation component, Psub(zz), of the deuterons. The neutron polarisation was monitored by recording the asymmetry in the neutron scattering from carbon. (author)