JACoW is a publisher in Geneva, Switzerland that publishes the proceedings of accelerator conferences held around the world by an international collaboration of editors.
TY - CONF AU - Jones, D.C. AU - Bollinger, D.S. AU - Kapin, V.V. AU - Seiya, K. ED - McIntosh, Peter ED - Burt, Graeme ED - Apsimon, Robert ED - Schaa, Volker R.W. TI - Investigation of the Beam Propagation Through the FNAL LEBT J2 - Proc. of LINAC2022, Liverpool, UK, 28 August-02 September 2022 CY - Liverpool, UK T2 - International Linear Accelerator Conference T3 - 31 LA - english AB - Fermilab Preaccelerator sends 25 mA H⁻ beam with a 30 µs pulse length at 15 Hz. The machine’s uptime was increased in 2012 by the replacement of the Cockcroft Walton accelerator with an RFQ system to take the beam from 35 keV to 750 keV; however, this came with a reduction in transmitted beam between the source and the entrance to Tank 1 of the LINAC. Fermilab currently operates with less than 50% of the beam current from the ion source making it to the entrance of tank 1. In an effort to understand the causes of this reduction in transmission efficiency a vertically movable paddle was installed between the first two solenoids allowing the beam size to be investigated before entering the RFQ. Comparing this data to the emittance measurements done after the first solenoid in the Ion Source R&D lab a more complete picture of the beams propagation through the LEBT has begun to be established when compared with the simulation results. We will present these results here. PB - JACoW Publishing CP - Geneva, Switzerland SP - 597 EP - 600 KW - LEBT KW - ion-source KW - linac KW - emittance KW - rfq DA - 2022/09 PY - 2022 SN - 2226-0366 SN - 978-3-95450-215-8 DO - doi:10.18429/JACoW-LINAC2022-TUPORI23 UR - https://jacow.org/linac2022/papers/tupori23.pdf ER -