Beam rotation and shear in a large electron beam diode

Conference · Sun Dec 31 23:00:00 EST 1989

DOI:https://doi.org/10.1109/27.108421· OSTI ID:6698578

Mansfield, C R; Oona, H; Shurter, R P

The time averaged electron beam current distribution of one of the electron guns of the Large Aperture Module (LAM) of the Aurora laser was measured as part of a larger set of experiments designed to study the electron beam transport to and energy deposition in the LAM laser chamber. The LAM laser chamber has a 1-m {times} 1-m aperture and is pumped from two sides along a 2-m length. A 10 ga. stainless steel sheet was placed inside the laser chamber and served multiple purposes. First, it was used to convert high energy electrons into X-rays in order to make radiograms of the electron beam. Second, the sheet was used as a Faraday cup to measure the total beam current. Third, individual Faraday cups were mounted on the plate to sample the time history of the electron beam at various positions. Each of the LAM electron gun diodes produces a beam of 750 kV electrons with a total current of about 500 kA which is relatively uniform over the cathode area of 1 m {times} 2 m. An applied magnetic field of about 1300 Gauss is used to prevent pinch of the beam during beam transport.

• Research Organization: Los Alamos National Lab., NM (USA)
• Sponsoring Organization: DOE/DP
• DOE Contract Number: W-7405-ENG-36
• OSTI ID: 6698578
• Report Number(s): LA-UR-90-2445; CONF-9009192--3; ON: DE90014902
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700208* -- Fusion Power Plant Technology-- Inertial Confinement Technology
APERTURES
AURORA FACILITY
BEAM CURRENTS
BEAMS
CURRENTS
DIAGNOSTIC TECHNIQUES
ELECTRON BEAMS
ELECTRON GUNS
IMAGES
LASER FUSION REACTORS
LEPTON BEAMS
MAGNETIC FIELDS
OPENINGS
PARTICLE BEAMS
THERMONUCLEAR REACTORS