Orlandi, G.L. Alarcon, A.D. Borrelli, S. Gobbo, A. Heimgartner, P. Ischebeck, R. Llorente Sancho, D. Löhl, F. Ozkan Loch, C. Pollet, P. Rippstein, B. Schlott, V. Vintar, R. JACoW Geneva, Switzerland 978-3-95450-192-2 10.18429/JACoW-IBIC2017-WEPCC16 English 388-392 WEPCC16 ion FEL electron MMI vacuum Contribution to a conference proceedings 2018 2018-03 https://doi.org/10.18429/JACoW-IBIC2017-WEPCC16 http://jacow.org/ibic2017/papers/wepcc16.pdf Several wire-scanners - 19 out of 22 - are presently installed in SwissFEL, the hard X-ray FEL facility under commissioning at Paul Scherrer Institut (www.psi.ch). Thanks to a wire-fork designed to be equipped with two different pairs of scanning wires (5 um tungsten and 12.5 um Al(99):Si(1)), high resolution measurements of the beam profile - and emittance - and, alternatively, a minimally-invasive beam monitoring during FEL operations can be performed. First experimental results of the SwissFEL wire-scanner commissioning will be presented as well as a summary of the prototyping design and characterization.