Gabor Lens Focusing and Emittance Growth in a Low-Energy Proton beam
- Wisconsin U., Madison
We have measured emittances in a low energy proton beam at energies between 19 and 49 KeV and currents between 9 and 39 rnA. We find that the rms emittance of the proton beam grew by an average amount of 60 %in a propagation distance of 2.5 cm. An Abel inversion procedure is applied to the charge distribution of the proton beam in order to calculate the electrostatic field energy of the beam. We find that all the emittance growth is due to 10% of the beam particles. In addition, a study of low energy beam focusing in a Gabor lens was done. We show that the Gabor lens is not useful for focusing negative ion beams.
- Research Organization:
- Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
- DOE Contract Number:
- AC02-07CH11359
- OSTI ID:
- 1425810
- Report Number(s):
- FERMILAB-THESIS-1993-64; RX-1447; 355907
- Country of Publication:
- United States
- Language:
- English
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