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 - Thurman-Keup, R.M. AU - El Baz, M. AU - Scarpine, V.E. ED - Schaa, Volker R.W. ED - Batten, Tonia ED - Bree, Michael ED - Petit-Jean-Genaz, Christine ED - Hunter, Darren TI - A Simulation of the Photoionization of H⁻ Together With the Subsequent Tracking of the Liberated Electrons J2 - Proc. of IBIC2023, Saskatoon, Canada, 10-14 September 2023 CY - Saskatoon, Canada T2 - International Beam Instrumentation Conference T3 - 12 LA - english AB - The Proton Improvement Plan - II (PIP-II) is a new linear accelerator (LINAC) complex being built at Fermilab. It is based on superconducting radiofrequency cavities and will accelerate H⁻ ions to 800 MeV kinetic energy before injection into the existing Booster ring. Measurements of the profile of the beam along the LINAC must be done by non-intercepting methods due to the superconducting cavities. The method chosen is photoionization of a small number of H⁻ by a focused infrared laser, aka laserwire. The number of ionized electrons is measured as a function of laser position within the H⁻ beam. To aid in the design of the collection mechanism, a simulation was written in MATLAB with input from the commercial electromagnetic simulation, CST. This simulation calculates the number and positions of the liberated electrons and tracks them through the magnetic collection and H⁻ beam fields to the collection point. Results from this simulation for various points along the LINAC will be shown. PB - JACoW Publishing CP - Geneva, Switzerland SP - 400 EP - 404 KW - laser KW - electron KW - simulation KW - linac KW - MEBT DA - 2023/12 PY - 2023 SN - 2673-5350 SN - 978-3-95450-236-3 DO - doi:10.18429/JACoW-IBIC2023-WEP024 UR - https://jacow.org/ibic2023/papers/wep024.pdf ER -