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TY - CONF AU - Lu, X. AU - Bowden, G.B. AU - Dolgashev, V.A. AU - Li, Z. AU - Nanni, E.A. AU - Sy, A.V. AU - Tantawi, S.G. ED - Yamazaki, Yoshishige ED - Raubenheimer, Tor ED - McCausey, Amy ED - Schaa, Volker RW TI - Rapid Radio-Frequency Beam Energy Modulator for Proton Therapy 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 - We present the design for a rapid proton energy modulator with radio-frequency (RF) accelerator cavities. The energy modulator is designed as a multi-cell one-meter long accelerator working at 2.856 GHz. We envision that each individual accelerator cavity is powered by a 400 kW low-voltage klystron to provide an accelerating / decelerating gradient of 30 MV/m. We have performed beam dynamics simulations showing that the modulator can provide ± 30MeV of beam energy change, with an energy spread of 3 MeV for a 7 mm long (full length) proton bunch. A prototype experiment of a single cell is in preparation at the Next Linear Collider Test Accelerator (NLCTA) at SLAC. PB - JACoW Publishing CP - Geneva, Switzerland SP - 298 EP - 300 KW - cavity KW - proton KW - simulation KW - GUI KW - klystron DA - 2019/10 PY - 2019 SN - 2673-7000 SN - 978-3-95450-223-3 DO - doi:10.18429/JACoW-NAPAC2019-TUXBA4 UR - http://jacow.org/napac2019/papers/tuxba4.pdf ER -