Plasma wakefield acceleration utilizing multiple election bunches
Kallos, E.
Katsouleas, T.
Muggli, P.
Pavlishin, I.
Pogorelsky, I.
Stolyarov, D.
Yakimenko, V.
Univ. of Southern California, Los Angeles;
This paper appears in: Particle Accelerator Conference, 2007. PAC. IEEE
Publication Date: 25-29 June 2007
On page(s): 3070-3072
Location: Albuquerque, NM,
ISBN: 978-1-4244-0916-7
INSPEC Accession Number: 9850673
Digital Object Identifier: 10.1109/PAC.2007.4440671
Current Version Published: 2008-01-28
Abstract
We investigate various plasma wakefield accelerator schemes that rely on multiple electron bunches to drive a large amplitude plasma wave, which are followed by a witness bunch at a phase where it will sample the high acceleration gradient and gain energy. Experimental verifications of various two bunch schemes are available in the literature; here we provide analytical calculations and numerical simulations of the wakefield dependency and the transformer ratio when M drive bunches and one witness bunch are fed into a high density plasma, where M is between 2 and 10. This is a favorable setup since the bunches can be adjusted such that the transformer ratio and the efficiency of the accelerator are enhanced compared to single bunch schemes. The possibility of a five bunch ILC afterburner to accelerate a witness bunch from 100 GeV to 500 GeV is also examined.
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