Community Research and Development Information Service - CORDIS


EXMAD Report Summary

Project ID: HPRI-CT-1999-50015
Country: Italy

Helium path to minimise air absorption in long-wavelength data collection

The construction of the helium purged beam path (HePBP) at Elettra was driven by the fact that the scattering and absorption of helium is much lower than air, which can be assessed by their scattering and absorption cross sections at different wavelengths.

The HePBP described here matches these requirements by enclosing the complete path of the primary beam (from the last beamline Kapton window to the crystal sample), and of the secondary beams region (from the sample to the detector surface), avoiding any window along the beams path. Moreover, it allows the use of conventional cryo-cooling instrumentation (see other results) for the data collection and sample mounting.

Reported by

ELETTRA - Sincrotrone Trieste in Area Science Park
S.S. 14 Km 163,5 loc. Basovizza
34012 Trieste
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