Short-pulse calorimetric load for high power millimeter-wave beams

F. Gandini, A. Bruschi, S. Cirant, G. Gittini, G. Granucci, V. Muzzini, C. Sozzi, N. Spinicchia

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Abstract

A spherical compact matched load, for high vacuum operation suited for short pulses (2 MW, 0.1 s) precise measurement has been designed to test high power gyrotrons Bruschi, Gandini, Muzzini, Spinicchia, Cirant, Gittini, Granucci, Mellera, Nardone, Simonetto, and Sozzi (Fusion Eng. Des. 56-57:649-654, 2001); Bruschi, Cirant, Gandini, Granucci, Mellera, Muzzini, Nardone, Simonetto, Sozzi, and Spinicchia (Nucl. Fusion 43:1513-1519, 2003); Bruschi, Cirant, Gandini, Gittini, Granucci, Mellera, Muzzini, Nardone, Simonetto, Sozzi, Spinicchia, Angella, and Signorelli (Development of CW and short-pulse calorimetric loads for high power millimeter-wave Beams, 23rd Symposium on Fusion Technology, September 20-24, 2004, Venice, Italy). In order to enhance the power handling capability of the load and to reduce the operation problems that may arise from an excessive reflection from the load, a ray tracing code has been written to model the power distribution on the inner surface and the pattern of the reflected radiation. The outcome of this code has been used to select a more convenient profile for the spreading mirror of the load and to optimize a pre-load specially conceived to minimize the power reflected fraction. © Springer Science+Business Media, LLC 2007.
Original languageEnglish
Pages (from-to)121 - 128
Number of pages8
JournalInternational Journal of Infrared and Millimeter Waves
Volume28
Issue number2
DOIs
Publication statusPublished - Feb 2007
Externally publishedYes

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All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering
  • Atomic and Molecular Physics, and Optics
  • Physics and Astronomy (miscellaneous)

Cite this

Gandini, F., Bruschi, A., Cirant, S., Gittini, G., Granucci, G., Muzzini, V., ... Spinicchia, N. (2007). Short-pulse calorimetric load for high power millimeter-wave beams. International Journal of Infrared and Millimeter Waves, 28(2), 121 - 128. https://doi.org/10.1007/s10762-006-9187-3