42925836
Design Status of a Separated-Sector Cyclotron Booster Accelerator for the Holifield Heavy Ion Research Facility
A separated-sector cyclotron booster accelerator is being designed for the Holifield Heavy Ion Research Facility as a Phase II project to be started in 1978. Phase I of the HHIRF, now under construction, includes a 25 MV tandem electrostatic accelerator, a beam transport and injection system to enable use of the Oak Ridge Isochronous Cyclotron as an energy booster for tandem beams, and some additional experiment areas and associated beam transport systems. The Phase I facility using the ORIC-25 MV tandem combination will provide energies up to about 25 MeV/amu for light ions such as oxygen and more than 5 MeV/amu up to the region of mass 160. The new Phase II separated-sector cyclotron will provide energies up to 100 MeV/amu for light ions and up to 12 MeV/amu for the heaviest ions such as uranium.
125379709
A FORTRAN PROGRAM FOR ESTIMATING RESIDUAL RADIATION LEVELS IN HIGH-ENERGY CHARGED-PARTICLE ACCELERATORS
A FORTRAN II program is described for utilizing cross section data for spallation products to obtain an estimate of the residual radiation from the bombardment of materials with high-energy particles. The program listing is included, together with sample input and output. (auth)
121772559
STRUCTURE OF SOME SIMPLE SHELL-MODEL WAVE FUNCTIONS.
The wave functions for the lowest-energy states with different angular momenta of the nuclei $_{18}\mathrm{Ar}^{39,40}$, $_{19}\mathrm{K}^{41}$, $_{22}\mathrm{Ti}^{51}$, $_{41}\mathrm{Nb}^{93,95}$, and $_{42}\mathrm{Mo}^{93,94,96,97}$ resulting from simple shell-model calculations are compared with the wave functions with definite angular momenta projected from (deformed) determinantal intrinsic states for these nuclei. Significant resemblance between the two is found. An attempt is made to give some insight into the general features which emerge from the comparison of the two sets of wave functions.
120950815
A 10-GeV on 10-GeV heavy-ion collider
125209391
Levels in Nd-144 from the Nd-143 (d, p) and the Nd-146 (p, t) reactions
113215116
The Oak Ridge Isochronous Cyclotron Refurbishment Project
The Oak Ridge Isochronous Cyclotron (ORIC) has been in operation for nearly fifty years at the Oak Ridge National Laboratory (ORNL). Presently, it serves as the driver accelerator for the ORNL Holifield Radioactive Ion Beam Facility (HRIBF), where radioactive ion beams are produced using the Isotope Separation Online (ISOL) technique for post-acceleration by the 25URC tandem electrostatic accelerator. Operability and reliability of ORIC are critical issues for the success of HRIBF and have presented increasingly difficult operational challenges for the facility in recent years. In February 2010, a trim coil failure rendered ORIC inoperable for several months. This presented HRIBF with the opportunity to undertake various repairs and maintenance upgrades aimed at restoring the full functionality of ORIC and improving the reliability to a level better than what had been typical over the previous decade. In this paper, we present details of these efforts, including the replacement of the entire trim coil set and measurements of their radial field profile. Comparison of measurements and operating tune parameters with setup code predictions will also be presented.
9908565
Recent results on GPD/DVCS experiments at CLAS
Generalized Parton Distributions (GPDs) are the new powerful means to describe the nucleon. The related deeply exclusive experiments have started since the beginning of this century mainly the study of Deeply Virtual Scattering processes. Experiments running at Jefferson Laboratory, on the CEBAF Large Acceptance Spectrometer (CLAS) in Hall B, have used both polarized and unpolarized targets and beams. Data analysis is working out beam spin and target spin asymmetries as well as cross-sections. Recent results are presented and comparison with theory display the foreseen difficulties to be encountered when trying to extract the GPDs from the observables.