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. Two prototypes of the absorber were manufactured from molybdenum alloy TZM and tested with a 28 keV DC 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 prototypes and key testing results.
@article{arxiv.1502.01709,
title = {High power density test of PXIE MEBT absorber prototype},
author = {A. Shemyakin and C. Baffes},
journal= {arXiv preprint arXiv:1502.01709},
year = {2015}
}
Comments
3 pp. arXiv admin note: text overlap with arXiv:1501.07568