JACoW is a publisher in Geneva, Switzerland that publishes the proceedings of accelerator conferences held around the world by an international collaboration of editors.
@inproceedings{coleman:napac2022-mopa50,
author = {S.J. Coleman and D.T. Abell and C.C. Hall and R. Kapadia and S.S. Karkare and S.Y. Kim and P. Piot and J.F. Power},
% author = {S.J. Coleman and D.T. Abell and C.C. Hall and R. Kapadia and S.S. Karkare and S.Y. Kim and others},
% author = {S.J. Coleman and others},
title = {{Integrated Photonics Structure Cathodes for Longitudinally Shaped Bunch Trains}},
& booktitle = {Proc. NAPAC'22},
booktitle = {Proc. 5th Int. Particle Accel. Conf. (NAPAC'22)},
pages = {160--163},
eid = {MOPA50},
language = {english},
keywords = {wakefield, cathode, emittance, simulation, laser},
venue = {Albuquerque, NM, USA},
series = {International Particle Accelerator Conference},
number = {5},
publisher = {JACoW Publishing, Geneva, Switzerland},
month = {10},
year = {2022},
issn = {2673-7000},
isbn = {978-3-95450-232-5},
doi = {10.18429/JACoW-NAPAC2022-MOPA50},
url = {https://jacow.org/napac2022/papers/mopa50.pdf},
abstract = {{Compact, high-gradient structure wakefield accelerators can operate at improved efficiency using shaped electron beams, such as a high transformer ratio beam shape, to drive the wakes. These shapes have generally come from a photocathode gun followed by a transverse mask to imprint a desired shape on the transverse distribution, and then an emittance exchanger (EEX) to convert that transverse shape into a longitudinal distribution. This process discards some large fraction of the beam, limiting wall-plug efficiency as well as leaving a solid object in the path of the beam. In this paper, we present a proposed method of using integrated photonics structures to control the emission pattern on the cathode surface. This transverse pattern is then converted into a longitudinal pattern at the end of an EEX. This removes the need for the mask, preserving the total charge produced at the cathode surface. We present simulations of an experimental set-up to demonstrate this concept at the Argonne Wakefield Accelerator.}},
}