C
C.A.J. van der Geer
Researcher at European Atomic Energy Community
Publications - 47
Citations - 387
C.A.J. van der Geer is an academic researcher from European Atomic Energy Community. The author has contributed to research in topics: Undulator & Free-electron laser. The author has an hindex of 10, co-authored 47 publications receiving 369 citations.
Papers
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Journal ArticleDOI
First lasing with FELIX
P.W. van Amersfoort,R.J. Bakker,J.B. Bekkers,R.W.B. Best,R. van Buuren,P.F.M. Delmee,B. Faatz,C.A.J. van der Geer,D.A. Jaroszynski,P. Manintveld,W.J. Mastop,B.J.H. Meddens,A.F.G. van der Meer,J.P. Nijman,D. Oepts,J. Pluygers,M.J. van der Wiel,W. A. Gillespie,P.F. Martin,M.F. Kimmitt,C. R. Pidgeon,M.W. Poole,G. Saxon +22 more
Journal ArticleDOI
High-power electrostatic free-electron maser as a future source for fusion plasma heating: experiments in the short-pulse regime.
W.H. Urbanus,W.A. Bongers,C.A.J. van der Geer,P. Manintveld,Jeroen Plomp,J. Pluygers,A.J. Poelman,P.H.M. Smeets,A.G.A. Verhoeven,V. L. Bratman,G. G. Denisov,Andrey V. Savilov,M Y Shmelyov,M. Caplan,A.A. Varfolomeev,S V Tolmachev,S.N. Ivanchenkov +16 more
TL;DR: A high-power, frequency-tunable electrostatic free-electron maser, being developed at the FOM Institute for Plasma Physics "Rijnhuizen," shows lasing at various frequencies and the main issues, such as the possibility of high- power, single-mode operation and frequency tuning, have been confirmed.
Journal ArticleDOI
Broadband tunability of a far-infrared free-electron laser
R.J. Bakker,C.A.J. van der Geer,Dino A. Jaroszynski,A.F.G. van der Meer,D. Oepts,P.W. van Amersfoort +5 more
TL;DR: In this article, the free electron laser for infrared experiments (FELIX) uses an undulator with an adjustable gap, which permits wavelength scans over an octave in typically 2 min without the need for any readjustment of the electron beam.
Journal ArticleDOI
1 GHz modulation of a high-current electron gun
R.J. Bakker,C.A.J. van der Geer,A.F.G. van der Meer,P.W. van Amersfoort,W. A. Gillespie,G. Saxon +5 more
TL;DR: In this article, measurements on a triode electron gun operated with grid modulation at 1 GHz were presented, where a miniaturized cathode was used to store the energy of the battery.
Journal ArticleDOI
First mm-wave generation in the FOM free electron maser
A.G.A. Verhoeven,W.A. Bongers,V. L. Bratman,M. Caplan,G. G. Denisov,C.A.J. van der Geer,G.P. Manintveld,A.J. Poelman,Jeroen Plomp,Andrey V. Savilov,P.H.M. Smeets,A.B. Sterk,W.H. Urbanus +12 more
TL;DR: The Dutch Free Electron Maser (FEM) as discussed by the authors was built as a pilot experiment for a mm-wave source for applications on future fusion research devices such as ITER, the International Tokamak Experimental Reactor.