M
M. Caplan
Researcher at Lawrence Livermore National Laboratory
Publications - 38
Citations - 421
M. Caplan is an academic researcher from Lawrence Livermore National Laboratory. The author has contributed to research in topics: Amplifier & Beam (structure). The author has an hindex of 12, co-authored 37 publications receiving 399 citations.
Papers
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Journal Article
Bragg reflectors
C.K. Chong,David B. McDermott,Manijeh Razeghi,Neville C. Luhmann,J. Pretterebner,D. Wagner,Manfred Thumm,M. Caplan,B. Kulke +8 more
TL;DR: A Bragg reflector composed of periodic cylindrically symmetric corrugations can provide a reflection of nearly unity through the principles of constructive interference, allowing the formation of a frequency selective resonator as mentioned in this paper.
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Design of the 1 MW, 200 GHz, FOM fusion FEM
W.J. Urbanus,R.W.B. Best,W.A. Bongers,A.M. van Ingen,P. Manintveld,A.B. Sterk,A.G.A. Verhoeven,M.J. van der Wiel,M. Caplan,V. L. Bratman,G. G. Denisov,A.A. Varfolomeev,A.S. Khlebnikov +12 more
TL;DR: In this article, the main components of the free-electron maser, the electron beam line, the undulator and the millimetre-wave system are described, which are optimized with the help of a fully 3D, particle-pusher, FEM simulation code.
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Experimental investigation of a 140 GHz gyrotron-backward wave oscillator
TL;DR: In this article, the experimental operation of a voltage tunable gyrotron backward wave oscillator (gyro-BWO) in the frequency range near 140 GHz was reported.
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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.
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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.