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TY - CONF AU - Johnson, D.E. AU - Bhat, C.M. AU - Chaurize, S. AU - Duel, K.L. AU - Johnson, T.R. AU - Karns, P.R. AU - Pellico, W. AU - Schupbach, B.A. AU - Seiya, K. AU - Slimmer, D. ED - Schaa, Volker RW TI - MEBT Laser Notcher (Chopper) for Booster Loss Reduction J2 - Proc. of HB2018, Daejeon, Korea, 17-22 June 2018 C1 - Daejeon, Korea T2 - ICFA Advanced Beam Dynamics Workshop T3 - 61 LA - english AB - The Fermilab Booster, which utilizes multi-turn injection and adiabatic capture, the extraction gap (aka "notch") has been created in the ring at injection energy using fast kickers which deposit the beam in a shielded absorber within the accelerator tunnel. This process, while effective at creating the extraction notch, was responsible for a significant fraction of the total beam power loss in the Booster tunnel and created significant residual activation within the Booster tunnel in the absorber region and beyond. With increasing beam demand from the Experimental Program, the Fermilab Proton Improvement Plan (PIP) initiated an R&D project to build a laser system to create the notch within a linac beam pulse at 750 keV, where activation in not an issue. This talk will discuss moving from R&D to an operational laser system and its integration into the accelerator complex. We will also cover the loss reduction in the Booster, increased efficiency, and increased proton throughput. We will touch on other potential applications for this bunch-by-bunch neutralization approach. PB - JACoW Publishing CP - Geneva, Switzerland SP - 416 EP - 421 KW - laser KW - booster KW - linac KW - injection KW - cavity DA - 2018/07 PY - 2018 SN - 978-3-95450-202-8 DO - 10.18429/JACoW-HB2018-THP1WC01 UR - http://jacow.org/hb2018/papers/thp1wc01.pdf ER -