No abstract available

[en] A three channel septum magnet has been designed to service the three primary beam lines at the exit of the SuperHILAC. A pulsed switching magnet located in the next to last drift tube in the SuperHILAC poststripper diverts the beam +-1.09⁰ into either the north or south port of the septum magnet. The central channel allows an undiverted beam to pass into another distribution magnet downstream. All channels may be active simultaneously and each may be tuned independently. Each septum channel contains four separate field regions and bends the beam 14.91⁰. Various important aspects of the design, including geometry, material selection, thermal characteristics and power requirements, are discussed. 2 refs., 3 figs

[en] A three channel septum magnet has been designed to service the three primary beam lines at the exit of the SuperHILAC. A pulsed switching magnet located in the next to last drift tube in the SuperHILAC poststripper diverts the beam +/- 1.09⁰ into either the north or south port of the septum magnet. The central channel allows an undiverted beam to pass into another distribution magnet downstream. All channels may be active simultaneously and each may be tuned independently. Each septum channel contains four separate field regions and bends the beam 14.91⁰. Various important aspects of the design, including geometry, material selection, thermal characteristics and power requirements, are discussed

[en] The 184 was last run on December 29, 1987. Decommissioning work included relocation of Van de Graff and biomedical programs, radiation measurements, planning, estimate preparation, tooling design and procurement, scheduling, shipping arrangements, rigging studies, obtaining of permits, waste disposal coordination, and cleanup. During decommissioning all the cyclotron parts and equipment inside the cyclotron cave were found to have induced radioactivity and were disposed of at the DOE Westinghouse Hanford Company site. Decommissioning has been done safely on budget and schedule. 7 refs

[en] A three channel septum magnet has been designed to service the three primary beam lines at the exit of the SuperHILAC. A pulsed switching magnet located in the next to last drift tube in the SuperHILAC poststripper diverts the beam + or - 1.09⁰ into either the north or south port of the septum magnet. The central channel allows an undiverted beam to pass into another distribution magnet downstream. All channels may be active simultaneously and each may be tuned independently. Each septum channel contains four separate field regions and bends the beam 14.91⁰. Various important aspects of the design, including geometry, material selection, thermal characteristics and power requirements, are discussed

[en] The design and construction of a water cooled, pulsed, laminated core dipole magnet which has recently been installed at the Bevalac is described. This new, energy efficient magnet was funded by the DOE In-House Energy Management Program. The magnet has been specifically designed for maximum efficiency in power utilization and has replaced two dc powered magnets in the Bevalac switchyard. It will reduce energy usage by 747 MWh/yr, and it provides the capability of pulse-to-pulse switching in 0.7 seconds between two major beamline channels serving the nuclear science and radiotherapy programs at the /Bevalac. A unique feature of this magnet is the core design which utilizes an external structure that remains integral with the core laminations after assembly. The structure provides for both torsional and longitudinal rigidity of the core while also facilitating the precision assembly and compression of the core laminations without the use of special assembly fixtures. 2 refs., 4 figs., 1 tab

[en] The electron and positron beams from the Stanford two-mile linear accelerator are brought to the PEP storage ring via two beam-transport lines, each about 225 meters in length. The beam pulses intended for PEP are switched out of the SLAC beam line by a pair of pulsed dipole bend magnets, which deflects them downward into a d.c. dipole magnet, where positron beams are bent into the south line and electrons into the north. See Figure 1. Each line beyond this common d.c. magnet contains 10 principal dipole magnets and 24 d.c. quadrupole magnets. The common beam-splitter magnet and the last dipole in each line are iron-septum (Lambertson-type) magnets, in which regions of strong and weak magnetic field are separated by thin iron septa. The other magnets are of a more conventional design but have design features with cost or size advantages

[en] Equipment for the stochastic cooling of 200 MeV protons in the Fermilab cooler ring has been installed and operated. Vertical and longitudinal cooling systems were installed by early 1980 and had successfully operated by May 1980. Traveling-wave structures particularly effective for the sub-relativistic beam velocities were used for the pickup and kicker electrodes

[en] Microbial pathogens in municipal sewage sludges need to be inactivated prior to environmental disposal. The efficacy of high energy (10 MeV) electron beam (eBeam) irradiation to inactivate a variety of selected microbial pathogens and indicator organisms in aerobically and anaerobically digested sewage sludge was evaluated. Both bacterial and viral pathogens and indicator organisms are susceptible to eBeam irradiation. However, as expected there was a significant difference in their respective eBeam irradiation sensitivity. Somatic coliphages, bacterial endospores and enteric viruses were more resistant compared to bacterial pathogens. The current US EPA mandated 10 kGy minimum dose was capable of achieving significant reduction of both bacterial and viral pathogens. Somatic coliphages can be used as a microbial indicator for monitoring eBeam processes in terms of pathogen inactivation in sewage sludges. (author)

[en] Recently the interest of astronomers and high energy physicists has focussed again on cosmic rays, in particular on high energy γ-rays. The CRT (cosmic ray tracking) project proposes a new type of extensive air shower array. A large number of drift chambers on the TPC type will allow the tracking of individual shower electrons. This results in an angular resolution for air showers of σ_θ<0.3deg, even near the energy threshold of a few 10¹² eV. The design and construction of the detector modules is described. These modules determine tracks in space inside a cylindrical volume of 1.8 m diameter and 0.75 m height with an accuracy of about one millimeter. With a half-scale prototype detector particle distributions in air showers triggered by a scintillator array were measured. (orig.)