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Title: Argonne Wakefield Accelerator facility upgrade.

The Argonne Wakefield Accelerator has been successfully used for conducting wakefield experiments in dielectric loaded structures and plasmas. Although the initial wakefield experiments were successful, higher drive beam quality would substantially improve the wakefield accelerating gradients. For this reason they have built a new 1-1/2 cell L-band photocathode RF gun. This gun is expected to produce 10-100 nC bunches with 2-5 ps rms pulse length and normalized emittance less than 100 mm mrad. The gun will initially have a copper photocathode, which will soon be replaced by a high quantum efficiency cesium telluride one, allowing the generation of a train of high charge bunches. the beam energy at the exit of the gun cavity will be in the range 7.5-10 MeV. A standing-wave linac structure operating at the same frequency (1.3 GHz) will increase the beam energy to about 15 MeV. This beam will be used in high-gradient wakefield acceleration experiments and other high intensity electron beam applications. Traveling-wave dielectric loaded structures, operating at 7.8 and 15.6 GHz, will be excited by the propagation of single bunches or by trains of up to 32 electron bunches, reaching gradients in excess of 100 MV/m over distances of the order of 1more » meter.« less
Authors:
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Publication Date:
OSTI Identifier:
785375
Report Number(s):
ANL-HEP-CP-01-58
TRN: US0108451
DOE Contract Number:
W-31-109-ENG-38
Resource Type:
Conference
Resource Relation:
Conference: 2001 Particle Accelerator Conference (PAC 2001), Chicago, IL (US), 06/18/2001--06/22/2001; Other Information: PBD: 11 Jul 2001
Research Org:
Argonne National Lab., IL (US)
Sponsoring Org:
US Department of Energy (US)
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; DIELECTRIC MATERIALS; ELECTRON BEAMS; PHOTOCATHODES; QUANTUM EFFICIENCY; WAKEFIELD ACCELERATORS; MODIFICATIONS; ANL; TRAVELLING WAVES; ELECTRON GUNS; BEAM BUNCHERS; BEAM DYNAMICS