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The data collected by DELPHI in 1999 at the four centre-of-mass energies of
192,
196, 200 and 202 GeV
have been used to update the search for charginos nearly mass-degenerate with
the lightest supersymmetric particle, which is assumed to be the lightest
neutralino.
Three different experimental tecniques are used to explore the mass difference
region below
$\Delta M\!=\!3$~GeV/c$^2$: the search for long-lived heavy
charged
particles, the search for secondary vertices or kinks and the search for soft
tracks accompanied by a high $p_T$ ISR photon.
No excess of events with respect to the Standard Model expectation has been
observed, and preliminary results for exclusion regions in the plane of
$\Delta M$ versus chargino mass are given.
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