7 Matching Results

Search Results

Advanced search parameters have been applied.

in subjects: "Linear Accelerators 430301* -- Particle Accelerators-- Ion Sources"

open access

The SuperHILAC heavy ion intensity upgrade

A high current MEtal Vapor Vacuum Arc (MEVVA) ion source is to be installed in the third injector (Abel) at the SuperHILAC, representing the first accelerator use of this novel ion source. The MEVVA source has produced over 1 A of uranium in all charge states, with more than 100 electrical mA (emA) of U/sup 5 +/. Transport of the space-charge dominated beam through the charge-state analysis dipole will be enhanced by a 100 kV extractor voltage and neutralization by secondary electrons. In addit… more

Date: March 1, 1987

Creator: Feinberg, B. & Brown, I.G.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Multi-channel pulser for the SLC thermionic electron source

A new pulser developed for the SLC thermionic gun has been operational since September 1984. It consists of two planar triode amplifiers with a common output triode driving the gun cathode to produce two independent pulses of up to 9A with a 3 nsec FWHM pulse width. Three long-pulse amplifiers are also connected to the cathode to produce pulses with widths controllable between 100 nsec and 1.6 ..mu..sec. Each amplifier has independent timing and amplitude control through a fiber optic link to t… more

Date: January 1, 1985

Creator: Browne, M. J.; Clendenin, J. E.; Corredoura, P. L.; Jobe, R. K.; Koontz, R. F. & Sodja, J.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Isolated grid electron gun and pulser system for long/short pulse operation

The new NPI gun at SLAC serves the dual functions of producing long pulse (up to 5 ..mu..sec, 180 pps) electron bursts for nuclear physics experiments, and also short (1 nsec) pulses for filling Stanford Synchrotron Radiation Laboratory (SSRL). This is accomplished by means of a newly designed, isolated grid gun, cathode pulsed with a solid state long pulse pulser, and grid pulsed with a fast recharging avalanche type short pulse (1 nsec) grid pulser. The grid pulser is bipolar so that a fast b… more

Date: April 1, 1984

Creator: Koontz, R. F.; Feathers, L.; Kilbourne, C.; Leger, G. & McKinney, T.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Status of the ATLAS PIIECR ion source project

The ATLAS PIIECR ion source is a major component of a project which will result in the replacement of the ATLAS tandem electrostatic injector with a superconducting linac of extremely low velocity profile and an ECR ion source operating in the continuous mode. A compilation of the source parameters adopted is tabulated, and the various issues considered in the design process and decisions made regarding those issues are discussed. (LEW)

Date: January 1, 1986

Creator: Pardo, R.; Minehara, E.; Lynch, F.; Billquist, P.; Evans, W.; Clifft, B. E. et al.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Wideroe-based heavy ion preaccelerator for the SuperHILAC

A new high-mass, high intensity injector for the SuperHILAC has been approved and is under construction at LBL. A high power intermediate charge state ion source and accompanying low-velocity linac will provide beams for subsequent acceleration by the SuperHILAC. Both axially and radially extracted ion sources will be accommodated and charge state analyzed in the 750 kV, 100 kHz Cockcroft-Walton terminal. The LEBT will provide isotopic analysis to 1 part in 300. A 5m long, 23.4 MHz Wideroe lina… more

Date: March 1, 1979

Creator: Staples, J. W.; Lancaster, H. D. & Yourd, R. B.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Operating experience with the Argonne PIIECR ion source system

The Argonne PIIECR ion source is the first ECR in source system to operate on a high voltage (350 kV) platform. The system is the injector into a new superconducting linac which will eventually provide beams over the entire periodic table, including uranium. The experience we have had with the system to date will be discussed. Emphasis will be placed on the source performance with solid materials and the initial performance of the system as an injector to the superconducting linac. The bunching… more

Date: January 1, 1989

Creator: Pardo, Richard C. & Billquist, Peter J.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Ion source and injector improvements at the superHILAC

Major improvements have been made on the Adam injector at the SuperHILAC heavy ion accelerator. Adam is a pressurized Cockcroft-Walton injector, typically run at voltages in excess of 2 MeV. The PIG ion source was redesigned to increase the length of the discharge column and the extraction slit, while remaining within the magnet poles of the source magnet. To maintain cooling, part of the thinner soft-iron end cap was replaced with a copper section, modifying the magnetic circuit. These modific… more

Date: September 1, 1990

Creator: Feinberg, B.; Behrsing, G.; Gavin, B.; Ryce, S.; Sihler, K. & Syversrud, D.

Item Type: Article

Partner: UNT Libraries Government Documents Department