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abstract:
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Cherenkov radiation of a relativistic e-beam traversing
a thin section of aerogel is analized, putting the stress on
the coherent contribution due to the intra-beam,
transverse and longitudinal structure. The use of this tool
as a temporal diagnostic for micro-bunched beams makes
possible to improve the amount of collected power at the
microbunching frequency several orders of magnitude
more respect to the uncoherent Cherenkov contribution.
The non-idealities of a real beam are taken in account,
and some techniques aimed on enhancing the coherent
part of radiation are proposed and analized analitically.
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