Phys. Rev. ST Accel. Beams 4, 083501 (2001) [8 pages]Low emittance electron beam formation with a 17 GHz RF gun |
W. J. Brown, S. E. Korbly, K. E. Kreischer, I. Mastovsky, and R. J. Temkin
MIT, Plasma Science and Fusion Center, 167 Albany Street, Cambridge, Massachusetts 02139
Received 30 January 2001; published 20 August 2001
We report on electron beam quality measurement results from the Massachusetts Institute of Technology 17 GHz RF gun experiment. The 1.5 cell RF gun uses a solenoid for emittance compensation. It has produced bunch charges up to 0.1 nC with beam energies up to 1 MeV. The normalized rms emittance of the beam after 35 cm of transport from the gun has been measured by a slit technique to be 3π mm mrad for a 50 pC bunch. This agrees well with parmela simulations at these beam energies. At the exit of the electron gun, we estimate the emittance to be about 1π mm mrad, which corresponds to a beam brightness of about 80 A/(π mm mrad)2. Improved beam quality should be possible with a higher energy output electron beam from the gun.
©2001 The American Physical Society
URL: http://link.aps.org/abstract/PRSTAB/v4/e083501
DOI: 10.1103/PhysRevSTAB.4.083501
PACS: 29.25.Bx, 41.75.Fr, 41.75.Lx, 29.27.-a
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