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A laser wire scanner is under development at CERN in
the framework of the Compact Linear Collider study (CLIC). A first test
has been carried out at the CLIC Test Facility II (CTF II) with the aim
of developing a beam profile monitor for a low energy, high charge
electron beam. In our set-up a 2.5 mJ, 1047 nm, 4 ps laser pulse
interacts with a 50 MeV, 1 nC, 4 ps electron bunch. A scintillator
detects up to 600 X-ray photons, with an average energy of 17 keV. In
the present status of the experiment Thomson photons have been observed,
but the signal to noise ratio is however still too low for an accurate
profile measurement.
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