Author: Tan, C.-Y.
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MOPOB28 Progress on the Design of a Perpendicularly Biased 2nd Harmonic Cavity for the Fermilab Booster 130
 
  • R.L. Madrak, J.E. Dey, K.L. Duel, J. Kuharik, W. Pellico, J. Reid, G.V. Romanov, M. Slabaugh, D. Sun, C.-Y. Tan, I. Terechkine
    Fermilab, Batavia, Illinois, USA
 
  A perpendicular biased 2nd harmonic cavity is being designed and built for the Fermilab Booster. Its purpose is to flatten the bucket at injection and thus change the longitudinal beam distribution to decrease space charge effects. It can also help with transition crossing. The cavity frequency range is 76 - 106 MHz. It is modeled using CST microwave studio and COMSOL. The power amplifier will use the same tetrode as is used for the fundamental mode cavities in the Fermilab Booster (Y567B). We discuss recent progress on the cavity design, plans for testing the tuner's garnet material, and tests of the power source.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-NAPAC2016-MOPOB28  
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MOPOB29 Measurements of the Properties of Garnet Material for Tuning a 2nd Harmonic Cavity for the Fermilab Booster 134
 
  • R.L. Madrak, W. Pellico, G.V. Romanov, C.-Y. Tan, I. Terechkine
    Fermilab, Batavia, Illinois, USA
 
  A perpendicular biased 2nd harmonic cavity is being designed and built for the Fermilab Booster, to help with injection and transition. The frequency range is 76 - 106 MHz. The garnet material chosen for the tuner is AL800. To reliably model the cavity, its static permeability and loss tangent must be well known. We present our measurements of these properties.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-NAPAC2016-MOPOB29  
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