  The determination of scalar lepton and gaugino masses is an important part of
the programme of spectroscopic studies of Supersymmetry at a high energy e+e-
linear collider. In this article we present results of a study of the
processes: e+e- -> eR eR -> e+e- chi0 chi, e+e- -> muR muR -> mu mu- chi0 chi0,
e+e- -> eL eL -> e e chi0 chi0 and e+e- -> snu_e snu_e -> e e chi+ chi-in two
Supersymmetric benchmark scenarios at 3 TeV and 1.4 TeV at CLIC. We
characterize the detector performance, lepton energy resolution and boson mass
resolution. We report the accuracy of the production cross section measurements
and the eR muR, snu_e, chi+ and chi0 mass determination, estimate the
systematic errors affecting the mass measurement and discuss the requirements
on the detector time stamping capability and beam polarization. The analysis
accounts for the CLIC beam energy spectrum and the dominant beam-induced
background. The detector performances are incorporated by full simulation and
reconstruction of the events within the framework of the CLIC_ILD_CDR detector
concept.
