Astronomy and Astrophysics – Astrophysics
Scientific paper
Apr 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002aps..apr.u5002o&link_type=abstract
American Physical Society, April Meeting, Jointly Sponsored with the High Energy Astrophysics Division (HEAD) of the American As
Astronomy and Astrophysics
Astrophysics
Scientific paper
A detailed understanding of the physics of space-charge dominated beams is vital for many advanced accelerators where high beam intensity is desired. Fear of destructive instabilities has often limited intensity, but there has been little opportunity to perform detailed experiments at very high beam intensity. In that regard, low-energy electron beams provide an excellent model system. The University of Maryland Electron ring (UMER), currently under construction, has been designed to study the physics of space-charge dominated beams with extreme intensity in a strong focusing lattice with dispersion. The tune shift in UMER will be more than an order of magnitude greater than exiting synchrotrons and rings. The 10-keV, 100 mA, UMER beam has a generalized perveance in the range of 0.0015, and a space charge tune shift of 6. Though compact (11-m in circumference), UMER is a very complex device, with over 140 focusing and bending magnets. We will report on the unique design features of this research facility, the beam physics to be investigated, simulation studies and early experimental results.
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