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The Impact of High-Dimensional Phase Space Correlations on the Beam Dynamics in a Linear Accelerator

Publication Type
Conference Paper
Book Title
Proc. 68th Adv. Beam Dyn. Workshop High-Intensity High-Brightness Hadron Beams (HB'23)
Publication Date
Page Numbers
68 to 72
Publisher Location
Switzerland
Conference Name
68th ICFA Advanced Beam Dynamics Workshop on High-Intensity and High-Brightness Hadron beams
Conference Location
Geneva, Switzerland
Conference Sponsor
CERN
Conference Date
-

Hadron beams develop intensity-dependent transverse-longitudinal correlations within radio-frequency quadrupole (RFQ) accelerating structures. These correlations are only visible in six-dimensional phase space and are destroyed by reconstructions from low-dimensional projections. In this work, we estimate the effect of artificial decorrelation on the beam dynamics in the Spallation Neutron Source (SNS) linac and Beam Test Facility (BTF). We show that the evolution of a realistic initial distribution and its decorrelated twin converge during the early acceleration stages; thus, low-dimensional projections are probably sufficient for detailed predictions in high-power linacs.