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TY - CONF AU - Schultz, K.A. AU - Carlson, C. AU - Guerrero, D. AU - Ortiz, G.T. AU - Schulze, M.E. ED - Yamazaki, Yoshishige ED - Raubenheimer, Tor ED - McCausey, Amy ED - Schaa, Volker RW TI - Novel Emittance Measurement Combining Foil Focusing and Pepper-Pot Techniques J2 - Proc. of NAPAC2019, Lansing, MI, USA, 01-06 September 2019 CY - Lansing, MI, USA T2 - North American Particle Accelerator Conference T3 - 4 LA - english AB - 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. PB - JACoW Publishing CP - Geneva, Switzerland SP - 961 EP - 964 KW - focusing KW - emittance KW - electron KW - space-charge KW - experiment DA - 2019/10 PY - 2019 SN - 2673-7000 SN - 978-3-95450-223-3 DO - doi:10.18429/JACoW-NAPAC2019-THZBB3 UR - http://jacow.org/napac2019/papers/thzbb3.pdf ER -