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@InProceedings{schultz:napac2019-thzbb3, author = {K.A. Schultz and C. Carlson and D. Guerrero and G.T. Ortiz and M.E. Schulze}, title = {{Novel Emittance Measurement Combining Foil Focusing and Pepper-Pot Techniques}}, booktitle = {Proc. NAPAC'19}, pages = {961--964}, paper = {THZBB3}, language = {english}, keywords = {focusing, emittance, electron, space-charge, experiment}, venue = {Lansing, MI, USA}, series = {North American Particle Accelerator Conference}, number = {4}, publisher = {JACoW Publishing, Geneva, Switzerland}, month = {10}, year = {2019}, issn = {2673-7000}, isbn = {978-3-95450-223-3}, doi = {10.18429/JACoW-NAPAC2019-THZBB3}, url = {http://jacow.org/napac2019/papers/thzbb3.pdf}, note = {https://doi.org/10.18429/JACoW-NAPAC2019-THZBB3}, abstract = {In this paper, we describe a direct measurement of foil focusing of an intense, relativistic electron beam com-bined with the pepper-pot technique to perform emit-tance measurements. Foil focusing occurs when a thin, grounded, conducting foil shorts out the radial electric field of a transiting electron beam, causing its self-magnetic field to focus the beam. A 40-ns pulse was extracted from the main pulse of the 16-MeV, 1.65 kA beam from Axis-II of the Dual Axis Radiographic Hy-drodynamic Test Facility to perform the measurements. We show that not accounting for foil focusing signifi-cantly reduces the measured emittance.}, }