RESULTS FROM THE UCLA/FNPL UNDERDENSE PLASMA LENS EXPERIMENT

Conference · Tue Apr 18 04:00:00 EDT 2006

DOI:https://doi.org/10.1142/9789812772176_0019· OSTI ID:898000

Thompson, M C; Badakov, H; Rosenzweig, J B; Travish, G; Edwards, H; Fliller, R; Kazakevich, G M; Piot, P; Santucci, J; Li, J; Tikhoplav, R

A gaussian underdense plasma lens with peak density 5 x 10{sup 12} cm{sup -3} and a full width half maximum (FWHM) length of 2.2 cm has been used to focus a relativistic electron beam. This plasma lens is equivalent in strength to a quadrupole magnet with a 150 T/m field gradient. The lens focused a 15 MeV, 16 nC electron beam with initial dimensions {sigma}{sub x,y} {approx} 650 {micro}m and {sigma}{sub z} {approx} 6.5 mm onto an optical transition radiation (OTR) screen {approx}2 cm downstream of the lens. The average transverse area of the plasma focused electron beam was typically demagnified by a factor of 23. The evolution of the beam envelope in the area near the beam waist was measured for both round beams and asymmetric beams with x:y aspect ratios as large as 1:5. The light from the OTR screen in the round beam case was also imaged into a streak camera in order to directly measure the correlation between z and {sigma}{sub r} within the beam.

• Research Organization: Lawrence Livermore National Laboratory (LLNL), Livermore, CA
• Sponsoring Organization: USDOE
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 898000
• Report Number(s): UCRL-PROC-220699
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ASPECT RATIO
BRIGHTNESS
DIMENSIONS
ELECTROMAGNETIC LENSES
ELECTRON BEAMS
MAGNETS
PHYSICS
QUADRUPOLES
SCREENS
STREAK CAMERAS
TRANSITION RADIATION