Dr. Thomas Schmidt

Photo of Thomas Schmidt

Group Leader

Paul Scherrer Institut
Forschungsstrasse 111
5232 Villigen PSI
Schweiz
Telefon
+41 56 310 45 92

Biography

Thomas Schmidt studied physics at the University of Dortmund where he did his PhD with a storage ring free electron laser. In 1998 he joint the Paul Scherrer Institut in 1998 with the start of the SLS project. Together with Gerhard Ingold he was responsible for the Insertion Devices. In collaborations with SPring-8 for hard x-ray in-vacuum undulators to be operated at high harmonics and BESSY II (now HZB) for soft x-ray APPLE II undulators the first set of beamlines has been realized for the start of SLS in 2001. The portfolio was completed with a quasi-period electromagnet undulator for the VUV and a wiggler for highest photon energies demanded by the Materials Science beamline. With the integration of SLS into the organizational structure of PSI, Thomas Schmidt became group leader of the newly established Insertion Device group. In the following years all straight sections have been successive equipped, amongst other with the first fixed-gap APPLE II undulator and one of the first cryogenic in-vacuum undulators. Based on the experience with SLS he developed with his team new concepts for the SwissFEL hard- and soft x-ray undulator lines, namely wedge-based high precision in-vacuum undulators with an automated optimization and soft x-ray undulators in the APPLE X configuration, a full symmetric design with the option of transverse gradients.

Institutional Responsibilities

As Head of the Insertion Device group at PSI, Thomas Schmidt is responsible for the undulators at SLS, SwissFEL and the upcoming SLS2.0.

Scientific Research

New concepts for undulators and measurement infrastructure.

Selected Publications

For an extensive overview we kindly refer you to our publication repository  Dora.

  • Calvi M, Ainslie MD, Dennis A, Durrell JH, Hellmann S, Kittel C, et al.
    A GdBCO bulk staggered array undulator
    Superconductor Science and Technology. 2020; 33(1): 014004 (7 pp.). https://doi.org/10.1088/1361-6668/ab5b37
    DORA PSI
  • Hellmann S, Calvi M, Schmidt T, Zhang K
    Numerical design optimization of short-period HTS staggered array undulators
    IEEE Transactions on Applied Superconductivity. 2020; 30(4): 4100705 (5 pp.). https://doi.org/10.1109/TASC.2020.2965873
    DORA PSI
  • Prat E, Abela R, Aiba M, Alarcon A, Alex J, Arbelo Y, et al.
    A compact and cost-effective hard X-ray free-electron laser driven by a high-brightness and low-energy electron beam
    Nature Photonics. 2020; 14: 748-754. https://doi.org/10.1038/s41566-020-00712-8
    DORA PSI
  • Zhang K, Ainslie M, Calvi M, Hellmann S, Kinjo R, Schmidt T
    Fast and efficient critical state modelling of field-cooled bulk high-temperature superconductors using a backward computation method
    Superconductor Science and Technology. 2020; 33(11): 114007 (9 pp.). https://doi.org/10.1088/1361-6668/abb78a
    DORA PSI
  • Zhang K, Hellmann S, Calvi M, Schmidt T
    Magnetization simulation of Rebco tape stack with a large number of layers using the Ansys A-V-A formulation
    IEEE Transactions on Applied Superconductivity. 2020; 30(4): 4700805 (5 pp.). https://doi.org/10.1109/TASC.2020.2965506
    DORA PSI
  • Abela R, Alarcon A, Alex J, Arrell C, Arsov V, Bettoni S, et al.
    The SwissFEL soft X-ray free-electron laser beamline: Athos
    Journal of Synchrotron Radiation. 2019; 26(4): 1073-1084. https://doi.org/10.1107/S1600577519003928
    DORA PSI
  • Dalli M, Calvi M, Sammut A, Sammut N, Schmidt T
    Development of a new magnetic measurement bench for in-vacuum undulators
    SN Applied Sciences. 2019; 1: 704 (9 pp.). https://doi.org/10.1007/s42452-019-0725-8
    DORA PSI
  • D’Auria G, Di Mitri S, Rochow R, Latina A, Liu X, Rossi C, et al.
    Status of the compactlight design study*
    In: Decking W, Sinn H, Geloni G, Schreiber S, Marx M, Schaa VRW, eds. 39th international free-electron laser conference. FEL2019. Proceedings. Vol. 39. Free electron laser conference. Geneva: JACoW Publishing; 2019:738-741. https://doi.org/10.18429/JACoW-FEL2019-THP078
    DORA PSI
  • Ganter R, Aeppli G, Alex J, Al Haddad A, Arrell C, Arsov V, et al.
    Status of Athos, the soft X-ray FEL line of SwissFEL
    In: Decking W, Sinn H, Geloni G, Schreiber S, Marx M, Schaa VRW, eds. 39th international free-electron laser conference. FEL2019. Proceedings. Vol. 39. Free electron laser conference. Geneva: JACoW Publishing; 2019:753-756. https://doi.org/10.18429/JACoW-FEL2019-THP085
    DORA PSI
  • Kittel C, Calvi M, Liang X, Schmidt T, Sammut NJ
    Operational model of the Athos undulator beamline
    In: Decking W, Sinn H, Geloni G, Schreiber S, Marx M, Schaa VRW, eds. 39th international free-electron laser conference. FEL2019. Proceedings. Vol. 39. Free electron laser conference. Geneva: JACoW Publishing; 2019:538-540. https://doi.org/10.18429/JACoW-FEL2019-WEP097
    DORA PSI
  • Liang X, Calvi M, Kittel C, Schmidt T, Sammut NJ
    Advanced operational models of the apple X undulator
    In: Decking W, Sinn H, Geloni G, Schreiber S, Marx M, Schaa VRW, eds. 39th international free-electron laser conference. FEL2019. Proceedings. Vol. 39. Free electron laser conference. Geneva: JACoW Publishing; 2019:541-544. https://doi.org/10.18429/JACoW-FEL2019-WEP098
    DORA PSI
  • Schmidt T, Calvi M, Kittel C, Voulot D, Hiller N, Schietinger T, et al.
    Experience with short-period, small gap undulators at the SwissFEL Aramis beamline
    In: Decking W, Sinn H, Geloni G, Schreiber S, Marx M, Schaa VRW, eds. 39th international free-electron laser conference. FEL2019. Proceedings. Vol. 39. Free electron laser conference. Geneva: JACoW Publishing; 2019:564-568. https://doi.org/10.18429/JACoW-FEL2019-WED01
    DORA PSI
  • Calvi M, Camenzuli C, Ganter R, Sammut N, Schmidt T
    Magnetic assessment and modelling of the Aramis undulator beamline
    Journal of Synchrotron Radiation. 2018; 25(3): 686-705. https://doi.org/10.1107/S1600577518002205
    DORA PSI
  • Ganter R, Bettoni S, Braun HH, Calvi M, Craievich P, Follath R, et al.
    Overview of the soft x-ray line Athos at SwissFEL
    In: Bishofberger K, Bruce C, Schaa VRW, eds. Proceedings of the 38th international free-electron laser conference. sine loco: JACoW; 2018:125-128. https://doi.org/10.18429/JACoW-FEL2017-MOP038
    DORA PSI
  • Joehri H, Calvi M, Hindermann M, Huber L, Keller A, Locher M, et al.
    Development of the new UE38 undulator for the Athos beamline in SwissFEL
    In: Schaa VRW, Tavakoli K, Tilmont M, eds. Proceedings of the 10th mechanical engineering design of synchrotron radiation equipment and instrumentation. Vol. 10. Mechanical engineering design of synchrotron radiation equipment and instrumentation. Geneva, Switzerland: JACoW Publishing; 2018:TUOPMA03 (5 pp.). https://doi.org/10.18429/JACoW-MEDSI2018-TUOPMA03
    DORA PSI
  • Schmidt T, Calvi M
    APPLE X undulator for the SwissFEL soft X-ray beamline Athos
    Synchrotron Radiation News. 2018; 31(3): 35-40. https://doi.org/10.1080/08940886.2018.1460174
    DORA PSI