Surface discharges for soft x-ray preionization in light-ion-fusion accelerators

Journal Article · Sat Aug 01 04:00:00 EDT 1987 · IEEE Trans. Plasma Sci.; (United States)

DOI:https://doi.org/10.1109/TPS.1987.4316722· OSTI ID:5877933

Woodworth, J R; Burns, E J.T.; Hanson, D L; Jaramillo, W H; Pattison, D A

The authors investigate surface discharges as extreme ultraviolet (XUV) photon sources for preionizing anode surfaces of ion diodes in light-ion-fusion accelerators. Preionization is important both to control the diode impedance and to efficiently generate an ion beam. The surface discharges and their power feeds were constructed in a strip-line configuration to minimize overall system inductance. In some cases a 0.6-..mu..F peaking capacitor was added to the circuit as close as possible to the surface discharge. These discharges radiated peak XUV powers of over 20 MW and total energies of over 5 J when driven by a low-energy (480 J) capacitor bank. These discharges were used to preionize the anode surface in an Applied-..beta.. diode on the Nereus accelerator (500 kV, 40 kA). Preionizing a cleaned LiF anode with 60 kW/cm/sup 2/ of XUV photons resulted in improved beam uniformity, flatter impedance profile, and a factor of 4 more ion beam energy coupled through the diode.

• Research Organization: Sandia National Labs., Albuquerque, NM
• DOE Contract Number: AC04-76DP00789
• OSTI ID: 5877933
• Journal Information: IEEE Trans. Plasma Sci.; (United States), Journal Name: IEEE Trans. Plasma Sci.; (United States) Vol. PS-15:4; ISSN ITPSB
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700205* -- Fusion Power Plant Technology-- Fuel
Heating
& Injection Systems
700208 -- Fusion Power Plant Technology-- Inertial Confinement Technology
ACCELERATORS
BEAMS
CAPACITORS
CHARGED PARTICLES
ELECTRIC DISCHARGES
ELECTRICAL EQUIPMENT
ELECTROMAGNETIC RADIATION
ELECTRONIC CIRCUITS
ELECTRONIC EQUIPMENT
EQUIPMENT
EXTREME ULTRAVIOLET RADIATION
ION BEAM FUSION REACTORS
ION BEAMS
ION SOURCES
IONIZING RADIATIONS
IONS
LIGHT IONS
LINEAR ACCELERATORS
MARX GENERATORS
NATIONAL ORGANIZATIONS
POWER SUPPLIES
RADIATIONS
SANDIA LABORATORIES
SOFT X RADIATION
THERMONUCLEAR REACTORS
ULTRAVIOLET RADIATION
US AEC
US DOE
US ERDA
US ORGANIZATIONS
X RADIATION