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RIS citation export for WED01: Experience with Short-Period, Small Gap Undulators at the SwissFEL Aramis Beamline

AU  - Schmidt, T.
AU  - Aiba, M.
AU  - Alarcon, A.D.
AU  - Arrell, C.
AU  - Bettoni, S.
AU  - Calvi, M.
AU  - Cassar, A.
AU  - Ferrari, E.
AU  - Follath, R.
AU  - Ganter, R.
AU  - Hiller, N.
AU  - Juranič, P.N.
AU  - Kittel, C.
AU  - Löhl, F.
AU  - Prat, E.
AU  - Reiche, S.
AU  - Sammut, N.J.
AU  - Schietinger, T.
AU  - Voulot, D.
AU  - Wagner, U.H.
ED  - Schaa, Volker R.W.
ED  - Decking, Winfried
ED  - Sinn, Harald
ED  - Geloni, Gianluca
ED  - Schreiber, Siegfried
ED  - Marx, Michaela
TI  - Experience with Short-Period, Small Gap Undulators at the SwissFEL Aramis Beamline
J2  - Proc. of FEL2019, Hamburg, Germany, 26-30 August 2019
CY  - Hamburg, Germany
T2  - Free Electron Laser Conference
T3  - 39
LA  - english
AB  - The SwissFEL Aramis beamline provides hard X-ray FEL radiation down to 1 Angström with 5.8 GeV and short period, 15 mm, in-vacuum undulators (U15). To reach the maximum designed K-value of 1.8 the U15s have to be operated with vacuum gaps down to 3.0 mm. The thirteen-undulator modules are 4 m long and each of them is equipped with a pair of permanent magnet quadrupoles at the two ends, aligned magnetically to the undulator axis. Optical systems and dedicated photon diagnostics are used to check the alignment and improve the K-value calibration. In this talk the main steps of the undulator commissioning will be recalled and a systematic comparison between the magnetic results and the electron and photon based measurements will be reported to highlight achievements and open issues.
PB  - JACoW Publishing
CP  - Geneva, Switzerland
SP  - 564
EP  - 568
KW  - undulator
KW  - alignment
KW  - photon
KW  - electron
DA  - 2019/11
PY  - 2019
SN  - 978-3-95450-210-3
DO  - doi:10.18429/JACoW-FEL2019-WED01
UR  - http://jacow.org/fel2019/papers/wed01.pdf
ER  -