Natural Science Forum / Physics / Particle Physics / August 2006

Your desires are self inconsistent, at least for current technology. For
instance, 100 A at 1 GeV is about 10,000 MegaWatts -- FAR above any
current accelerator (1 MW is a challenge).

CEBAF (at Jefferson Lab in Virginia) is a 3-6 GeV electron accelerator
with probably the highest beam current at similar energies. IIRC it is a
few milliamps, certainly far below 100A. SLAC (in Stanford California)
is much higher energy, but lower current. Google is your friend, and you
can find their actual parameters yourself.

Note that luminosity is more than beam current, and the emittance of the
beam is just as important as overall current.

For electrons, good energy resolution is a challenge because of
synchrotron radiation. I don't know if 0.01% is possible at a few GeV --
look at the mass resolution of the psi/J factories (3.1 GeV/c^2, so the
beams are ~1.5 GeV).

Tom Roberts