A differential pumping system to deliver windowless VUV photons at atmospheric pressure

Giuliani, A.; Yao, I.; Lagarde, B.; Rey, S.; Duval, J.-P.; Rommeluere, P.; Jamme, F.; Rouam, V.; Wein, F.; De Oliveira, C.; Ros, M.; Lestrade, A.; Desjardins, K.; Giorgetta, J.-L.; Laprevote, O.; Herbaux, C.; Refregiers, M.

doi:10.1107/S0909049511016517

A differential pumping system to deliver windowless VUV photons at atmospheric pressure

A. Giuliani, I. Yao, B. Lagarde, S. Rey, J.-P. Duval, P. Rommeluere, F. Jamme, V. Rouam, F. Wein, C. De Oliveira, M. Ros, A. Lestrade, K. Desjardins, J.-L. Giorgetta, O. Laprevote, C. Herbaux and M. Refregiers

In order to deliver VUV (vacuum ultraviolet) photons under atmospheric pressure conditions, a differential pumping system has been built on the DISCO beamline at the SOLEIL synchrotron radiation facility. The system is made of four stages and is 840 mm long. The conductance-limiting body has been designed to allow practicable optical alignment. VUV transmission of the system was tested under air, nitrogen, argon and neon, and photons could be delivered down to 60 nm (20 eV).

Keywords: differential pumping; vacuum ultraviolet (VUV) photons.

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