CAMP@FLASH: an end-station for imaging, electron- and ion-spectroscopy, and pump–probe experiments at the FLASH free-electron laser

Erk, B.; Müller, J.P.; Bomme, C.; Boll, R.; Brenner, G.; Chapman, H.N.; Correa, J.; Düsterer, S.; Dziarzhytski, S.; Eisebitt, S.; Graafsma, H.; Grunewald, S.; Gumprecht, L.; Hartmann, R.; Hauser, G.; Keitel, B.; von Korff Schmising, C.; Kuhlmann, M.; Manschwetus, B.; Mercadier, L.; Müller, E.; Passow, C.; Plönjes, E.; Ramm, D.; Rompotis, D.; Rudenko, A.; Rupp, D.; Sauppe, M.; Siewert, F.; Schlosser, D.; Strüder, L.; Swiderski, A.; Techert, S.; Tiedtke, K.; Tilp, T.; Treusch, R.; Schlichting, I.; Ullrich, J.; Moshammer, R.; Möller, T.; Rolles, D.

doi:10.1107/S1600577518008585

Figure 5
Layout of the CAMP end-station at FLASH BL1. The FEL beam enters from the left and is focused by the (1) horizontal and (2) vertical plane-elliptical focusing KB-mirrors. (3) The differential pumping section houses a drilled 1.5-inch mirror that is used to couple in the FLASH1 pump–probe laser and to overlap it with the FEL beam under a small angle. (4) The main experimental chamber has four DN250CF ports each in a transverse distance of 260 mm to (5) the interaction region, where the FEL is focused. Typically, the spectrometers (see §3.2

) are inserted from the top and bottom, while sample injection or target holders are mounted on the sides. Downstream of the main chamber, a detector chamber can be placed that houses the front pnCCD detector plane (6) that consists of two detector halves which can be moved independently to catch large scattering angles. (7) A second detector plane can be placed at a fixed position for small-angle scattering. The experimental chamber is on a frame that can be translated in the XYZ direction as well as pitched and tilted with respect to the FEL beam, which points downwards by 6° after exiting the KB focusing system.

JOURNAL OF
SYNCHROTRON
RADIATION

ISSN: 1600-5775

Volume 25| Part 5| September 2018| Pages 1529-1540

https://doi.org/10.1107/S1600577518008585

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