Nonlinear dynamics experiment in the Tevatron

Conference · Sun Jan 01 04:00:00 EST 1989

OSTI ID:6257556

Merminga, N; Edwards, D; Finley, D; Gerig, R; Gelfand, N; Harrison, M; Johnson, R; Syphers, M; Meller, R; Siemann, R; Talman, R

Results of the continuing analysis of the nonlinear dynamics experiment E778 are presented. Sixteen special sextupoles introduced nonlinearities in the Tevatron. 'Smear,' which is one of the parameters used to quantify the degree of nonlinearity, was extracted from the data and compared with calculation. Injection efficiency in the presence of nonlinearities was studied. Measurements of the dynamic aperture were performed. The final results in one degree of freedom of the smear, the injection efficiency and the dynamic aperture are presented. Particles captured on nonlinear resonance islands were directly observed and measurements were performed. The capture efficiency was extracted from the data and compared with prediction. The influence of tune modulation on the stability of these islands was investigated. Plans for future measurements are discussed. 4 refs., 6 figs.

• Research Organization: Fermi National Accelerator Lab., Batavia, IL (USA)
• DOE Contract Number: AC02-76CH03000
• OSTI ID: 6257556
• Report Number(s): FNAL/C-89/85; CONF-890335-98; ON: DE89011462
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
430200* -- Particle Accelerators-- Beam Dynamics
Field Calculations
& Ion Optics
ACCELERATORS
BEAM DYNAMICS
BEAM INJECTION
CYCLIC ACCELERATORS
EFFICIENCY
FERMILAB TEVATRON
MAGNETIC FIELD CONFIGURATIONS
MAGNETIC ISLANDS
MATHEMATICAL SPACE
NONLINEAR PROBLEMS
PHASE SPACE
SPACE
SYNCHROTRONS