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@inproceedings{majernik:ipac2021-tupab095,
author = {N. Majernik and G. Andonian and D.S. Doran and G. Ha and J.G. Power and J.B. Rosenzweig and R.J. Roussel and E.E. Wisniewski},
% author = {N. Majernik and G. Andonian and D.S. Doran and G. Ha and J.G. Power and J.B. Rosenzweig and others},
% author = {N. Majernik and others},
title = {{Arbitrary Longitudinal Pulse Shaping with a Multi-Leaf Collimator and Emittance Exchange}},
booktitle = {Proc. IPAC'21},
pages = {1600--1603},
eid = {TUPAB095},
language = {english},
keywords = {wakefield, acceleration, plasma, laser, emittance},
venue = {Campinas, SP, Brazil},
series = {International Particle Accelerator Conference},
number = {12},
publisher = {JACoW Publishing, Geneva, Switzerland},
month = {08},
year = {2021},
issn = {2673-5490},
isbn = {978-3-95450-214-1},
doi = {10.18429/JACoW-IPAC2021-TUPAB095},
url = {https://jacow.org/ipac2021/papers/tupab095.pdf},
note = {https://doi.org/10.18429/JACoW-IPAC2021-TUPAB095},
abstract = {{Drive and witness beams with variable current profiles and bunch spacing can be generated using an emittance exchange beamline (EEX) in conjunction with transverse masks. Recently, this approach was used to create advanced driver profiles and demonstrate record-breaking plasma wakefield transformer ratios [Roussel, R., et al., Phys. Rev. Lett. 124, 044802 (2020)], a crucial advancement for effective witness acceleration. Presently, these transverse masks are individually laser cut, making the refinement of beam profiles a slow process. Instead, we have proposed the used of a UHV compatible multileaf collimator (MLC) to replace these masks. An MLC permits real-time adjustment of the beam masking, permitting faster optimization in a manner highly synergistic with machine learning. Beam dynamics simulations have shown that practical MLCs offer resolution that is functionally equivalent to that offered by the laser cut masks. In this work, the engineering considerations and practical implementation of such a system at the AWA facility are discussed and the results of benchtop tests are presented.}},
}