Characterization of a ramped gradient DTL: Experiment and theory
An experimental demonstration confirming the beam-dynamics of a Ramped-Gradient Drift-Tube Linac (RGDTL) was performed at Los Alamos National Laboratory. The RGDTL was designed to optimize on the requirements of maximum beam acceleration, minimum longitudinal and transverse emittance growth, and acceptable wall power loss. At low beam energies, transverse magnet focusing is weak and the rf defocusing must be minimized. As the beam energy increases, stronger rf defocusing can be tolerated and the rf electric field gradient can increase. A detailed comparison of theory and experiment was carried out. Beam longitudinal centroids (output energy and phase), transverse and longitudinal emittances were measured as a function of RGDTL rf field amplitude and phase. The longitudinal centroids were also studied as functions of input beam current, energy, and degree of bunching. Comparison between experimental data and theory was found to be in good agreement. 12 refs., 1 fig.
- Research Organization:
- Los Alamos National Lab., NM (USA)
- Sponsoring Organization:
- DOD; Department of Defense, Washington, DC (USA)
- DOE Contract Number:
- W-7405-ENG-36
- OSTI ID:
- 5660760
- Report Number(s):
- LA-UR-91-1521; CONF-910505--171; ON: DE91013502
- Country of Publication:
- United States
- Language:
- English
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