Title :
Creation of femtosecond sheet-like bunches for driving optical-scale dielectric slab accelerator structures
Author :
Wang, Changbiao ; Hirshfield, J.L. ; Marshall, T.C.
Author_Institution :
Beam Phys. Lab., Yale Univ., New Haven, CT, USA
Abstract :
Optically chopped bunches can be created by placing a beam stop with an off-axis hole following laser-driven cyclotron autoresonance acceleration. For example, a 500 MeV electron beam driven by a 5 TW/10.6 micron laser can be chopped into bunches with diameter ~50 microns and length ~1 micron. It is furthermore shown that the bunches can be elongated in one transverse dimension and compressed in the other using a quadrupole magnet, so as to serve as the driver for an optical-scale dielectric wake field accelerator. Bunch length spreading from space charge is examined to find limits to transport pC, micron long bunches
Keywords :
electron accelerators; particle beam bunching; wakefield accelerators; 1 fs; 10.6 micron; 5 TW; 50 micron; 500 MeV; bunch length spreading; dielectric slab accelerator structures; electron bunches; femtosecond sheet-like bunches; laser-driven cyclotron autoresonance acceleration; optical-scale dielectric wake field accelerator; space charge; Acceleration; Accelerator magnets; Cyclotrons; Dielectrics; Electron beams; Electron optics; Laser beams; Particle beams; Space charge; Ultrafast optics;
Conference_Titel :
Particle Accelerator Conference, 2001. PAC 2001. Proceedings of the 2001
Conference_Location :
Chicago, IL
Print_ISBN :
0-7803-7191-7
DOI :
10.1109/PAC.2001.988336
