期刊
PLASMA PHYSICS AND CONTROLLED FUSION
卷 56, 期 8, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/0741-3335/56/8/084011
关键词
plasma wakefield accelerator; laser ionization; plasma source
资金
- US Department of Energy [DE-AC02-76SF00515, FG02-92-ER40727]
The Facility for Advanced Accelerator and Experimental Tests (FACET) at SLAC installed a 10-TW Ti : sapphire laser system for pre-ionized plasma wakefield acceleration experiments. High energy (500 mJ), short (50 fs) pulses of 800 nm laser light at 1 Hz are used at the FACET experimental area to produce a plasma column. The laser pulses are stretched to 250 fs before injection into a vapor cell, where the laser is focused by an axicon lens to form a plasma column that can be sustained over the desired radius and length. A 20 GeV electron bunch interacts with this preformed plasma to generate a non-linear wakefield, thus accelerating a trailing witness bunch with gradients on the order of several GV m(-1). The experimental setup and the methods for producing the pre-ionized plasma for plasma wakefield acceleration experiments performed at FACET are described.
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