Abstract
The SNS accumulator ring is designed to compress 1.5/spl times/10/sup 14/ 1 GeV protons from a bunch train of 1000 /spl mu/s H/sup -/ to a single proton bunch with bunch length 700 ns. The injection scenario of the SNS is experimentally simulated at the Cooler Injector Synchrotron (CIS) at Indiana University. A 100 /spl mu/s, 7 MeV H/sup -/ bunch train from the RFQ and DTL is compressed into a single proton bunch with bunch length /spl les/ 150 ns. The transverse rms emittance of the 7 MeV beam is measured by the quadrupole tuning method in the CIS extraction line. Measurements are taken at various beam intensities with peak currents ranging from a few mA to hundreds of mA. Results are compared with simulation, and the effects of multiple strip foil transits and space charge are discussed.
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