High brightness immersed source injector characterization

Conference · Sat Dec 31 23:00:00 EST 1988

DOI:https://doi.org/10.1109/PAC.1989.73478· OSTI ID:6276281

Frost, C. A.; Poukey, J. W.; Leifeste, G. T.; Hasti, D. E.; Jojola, J. M.; Jones, E. E.

RADLAC II is a high current linear induction accelerator for electrons. The beam is produced in a field-immersed foilless diode injector. We report the first time-resolved characterization of a similar high-brightness immersed diode source using a time-gated, 2-D x-ray imaging technique. The experiments were performed on the 4-MeV IBEX accelerator and produced currents exceeding 40 kA in a 6-mm radius, thin annular beam with a measured thermal transverse velocity v/sub /perpendicular// = ..beta../sub /perpendicular//c approx. 0.1c. For currents of 30 kA, even brighter beams with ..beta../sub /perpendicular// = 0.07 were obtained. At lower currents, beams as small as 2 mm in radius were produced with a smaller cathode tip. In all cases, the measured parameters were consistent with 2-D PIC simulations. The experimental results will be discussed and compared to theory and simulations. 7 refs., 10 figs., 1 tab.

• Research Organization: Sandia National Labs., Albuquerque, NM (USA)
• DOE Contract Number: AC04-76DP00789
• OSTI ID: 6276281
• Report Number(s): SAND-89-0740C; CONF-890335-10; ON: DE89009071
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
430303* -- Particle Accelerators-- Experimental Facilities & Equipment
ACCELERATORS
BEAM INJECTION
COMPUTERIZED SIMULATION
CURRENT DENSITY
ELECTRON BEAM INJECTION
LINEAR ACCELERATORS
SIMULATION