One of the goals of the PXIE program at Fermilab is to demonstrate the capability to form an arbitrary bunch pattern from an initially CW 162.5 MHz H^{-} bunch train coming out of an RFQ. The bunch-by-bunch selection will take place in the 2.1 MeV Medium Energy Beam Transport (MEBT) by directing the undesired bunches onto an absorber that needs to withstand a beam power of up to 21 kW, focused onto a spot with a ~2 mm rms radius. A prototype of the absorber was manufactured from molybdenum alloy TZM, and tested with an electron beam up to the peak surface power density required for PXIE, 17W/mm2. Temperatures and flow parameters were measured and compared to analysis. This paper describes the absorber prototype and key testing results.
@article{arxiv.1501.07568,
title = {Testing Results of the Prototype Beam Absorber for the PXIE MEBT},
author = {Curtis Baffes and Alexander Shemyakin},
journal= {arXiv preprint arXiv:1501.07568},
year = {2015}
}
Comments
3 pp. 5th International Particle Accelerator Conference (IPAC 2014) 16-20 Jun 2014. Dresden, Germany