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in creator/contributor: "Kalnins"  
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ECR heavy-ion source for the LBL 88-inch cyclotron

Description: An Electron Cyclotron Resonance (ECR) heavy-ion source is under construction at the LBL 88-Inch Cyclotron. This source will produce very-high-charge-state heavy ions, such as 0/sup 8 +/ and Ar/sup 12 +/, which will increase cyclotron energies by a factor of 2-4, up to A = 80. It is a two-stage source using room-temperature coils, a permanent-magnet sextupole, and a 6-9 GHz microwave system. Design features include adjustable first-to-second-stage plasma coupling, a variable second-stage mirror … more
Date: March 1, 1983
Creator: Clark, D. J.; Kalnins, J. G. & Lyneis, C. M.
Partner: UNT Libraries Government Documents Department
open access

Emittance at the superHILAC and the Bevalac transfer line

Description: The SuperHILAC (SHILAC) accelerator serves as a heavy-ion injector to the Lawrence Berkeley Laboratory's Bevalac via a 260 m transport line. Since the acceptance, and hence the final extracted beam intensity of the Bevalac is very sensitive to the emittance and dispersion of the beam at injection, a program was undertaken to accurately characterize these parameters under a variety of operating conditions. 7 figs.
Date: March 1, 1989
Creator: Krebs, G. F.; Kalnins, J. G.; Abinante, M. S.; Alonso, J. R.; Feinberg, B.; Fowler, K. et al.
Partner: UNT Libraries Government Documents Department
open access

3-dimensional beam scanning system for particle radiation therapy

Description: In radiation therapy treatment volumes up to several liters have to be irradiated. Today's charged particle programs use ridge filters, scattering foils, occluding rings collimators and boluses to shape the dose distribution. An alternative approach, scanning of a small diameter beam, is analyzed and tentative systems specifications are derived. Critical components are scheduled for fabrication and testing at LBL.
Date: March 1977
Creator: Leemann, C.; Alonso, J.; Grunder, H.; Hoyer, E.; Kalnins, G.; Rondeau, D. et al.
Partner: UNT Libraries Government Documents Department
open access

Radioactive beam production at the Bevalac

Description: At the Bevalac radioactive beams are routinely produced by the fragmentation process. The effectiveness of this process with respect to the secondary beam's emittance, intensity and energy spread depends critically on the nuclear reaction kinematics and the magnitude of the incident beam energy. When this beam energy significantly exceeds the energies of the nuclear reaction process, many of the qualities of the incident beam can be passed on to the secondary beam. Factors affecting secondary b… more
Date: October 1, 1989
Creator: Alonso, J. R.; Feinberg, B.; Kalnins, J. G.; Krebs, G. F.; McMahan, M. A. & Tanihata, I.
Partner: UNT Libraries Government Documents Department
open access

Improved alternating gradient transport and focusing of neutral molecules

Description: Polar molecules, in strong-field seeking states, can be transported and focused by an alternating sequence of electric field gradients that focus in one transverse direction while defocusing in the other. We show by calculation and numerical simulation, how one may greatly improve the alternating gradient transport and focusing of molecules. We use a new optimized multipole lens design, a FODO lattice beam transport line, and lenses to match the beam transport line to the beam source and the fi… more
Date: December 2, 2001
Creator: Kalnins, Juris; Lambertson, Glen & Gould, Harvey
Partner: UNT Libraries Government Documents Department
open access

Design of a pulsed switching magnet for the Bevalac

Description: 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.… more
Date: March 1, 1989
Creator: Abbott, S.; Alonso, J.; Brown, J.; Kalnins, J.; Krebs, G. & Reimers, R.
Partner: UNT Libraries Government Documents Department
open access

U.S. Department of Energy physical protection upgrades at the Latvian Academy of Sciences Nuclear Research Center, Latvia

Description: Approximately five years ago, the Safe, Secure Dismantlement program was started between the United States and countries of the Former Soviet Union (FSU). The purpose of the program is to accelerate progress toward reducing the risk of nuclear weapons proliferation, including such threats as theft, diversion, and unauthorized possession of nuclear materials. This would be accomplished by strengthening the material protection, control, and accounting systems within the FSU countries. This paper … more
Date: December 31, 1966
Creator: Haase, M.; Hine, C.; Robertson, C.; Soo Hoo, M. S.; Engling, E.; Lapenas, A. et al.
Partner: UNT Libraries Government Documents Department
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