Pxie low energy beam transport commissioning
Abstract
The Proton Improvement Plan II (PIP-II) at Fermilab is a program of upgrades to the injection complex. At its core is the design and construction of a CW-compatible, pulsed H- superconducting RF linac. To validate the concept of the front-end of such machine, a test accelerator (a.k.a. PXIE) is under construction. It includes a 10 mA DC, 30 KeV H- ion source, a 2 m-long Low Energy Beam Transport (LEBT), a 2.1 MeV CW RFQ, followed by a Medium Energy Beam Transport (MEBT) that feeds the first of 2 cryomodules increasing the beam energy to ~25 MeV, and a High Energy Beam Transport section (HEBT) that takes the beam to a dump. The ion source and LEBT, which includes 3 solenoids, several clearing electrodes/collimators and a chopping system, have been built, installed, and commissioned to full specification parameters. This report presents the outcome of our commissioning activities, including phase-space measurements at the end of the beam line under various neutralization schemes obtained by changing the electrodes' biases and chopper parameters.
Keywords
Cite
@article{arxiv.1511.01479,
title = {Pxie low energy beam transport commissioning},
author = {L. Prost and M. Alvarez and R. Andrews and J. -P. Carneiro and B. Hanna and V. Scarpine and A. Shemyakin and R. D'Arcy and C. Wiesner},
journal= {arXiv preprint arXiv:1511.01479},
year = {2015}
}
Comments
3 pp