Author:
KWAN J.W.,BIENIOSEK F.M.,HENESTROZA E.,PROST L.,SEIDL P.
Abstract
For the High Current Beam Transport Experiment (HCX) at Lawrence
Berkeley National Laboratory, an injector is required to deliver
up to 1.8 MV of 0.6 A K+ beam with an emittance of
≈1 π-mm-mrad. We have successfully operated a 10-cm-diameter
surface ionization source together with an electrostatic quadrupole
(ESQ) accelerator to meet these requirements. The pulse length
is ≈4 μs, firing at once every 10–15 s. By optimizing
the extraction diode and the ESQ voltages, we have obtained
an output beam with good current density uniformity, except
for a small increase near the beam edge. Characterization of
the beam emerging from the injector included measurements of
the intensity profile, beam imaging, and transverse phase space.
These data along with comparison to computer simulations provide
the knowledge base for designing and understanding future HCX
experiments.
Subject
Electrical and Electronic Engineering,Condensed Matter Physics,Atomic and Molecular Physics, and Optics
Cited by
15 articles.
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