A 12 keV Proton Analog for a 4 MeV Electron Beam
Abstract
This paper describes an unusual circumstance where it is useful to model an electron beam by a proton beam. The beam behavior can be calculated by an envelope equation. The terms in the envelope equation containing beam charge and emittance can be for either protons or electrons by appropriate scaling of energy and beam current and by keeping physical emittance the same. Thus we are experimenting with a proton beam of 12.5 keV at 60 nA to mimic behavior of an electron beam of 4.3 MeV at 200 mA. This proton analog allows us to begin development of beam transport for electron cooling at Fermilab much more easily and quickly, because: Protons are readily available from a retired duoplasmatron ion source. Low energy protons produce no radiation, simplifying experimental arrangements and avoiding the overhead of controlled access. Low energy protons do not ionize residual gas; therefore routine vacuum practices are adequate and the beam, like the intended electron beam, is completely un-neutralized.
- Publication:
-
APS Meeting Abstracts
- Pub Date:
- May 1996
- Bibcode:
- 1996APS..MAY.M1205B