Speaker
Description
7 MeV electron bunches from a radiofrequency photoinjector, carrying
up to 100 pC of charge, traversed a localized distribution of nitrogen
gas (N2). The interaction of the electron bunches with the N2 gas
generated a correlated signature in the ionized particle distribution,
which was spatially magnified using a series of electrostatic lenses and
recorded with a microchannel-plate detector. Various modalities,
including point-to-point imaging and velocity mapping, are investigated.
A temporal trace of the detector current enabled the identification of
single- and double-ionization events. The characteristics of the
ionization distribution, dependence on gas density, total bunch charge,
and other parameters, are described. Approaches to scaling to higher
electron bunch density and energy are suggested. Additionally, the
instrument proves useful for comprehensive studies of the ionization
process itself.
Suggested Speaker: P. Denham UCLA
Suggested by: Alessandro Cianchi
| I have read and accept the Conference Policies | Yes |
|---|
