Author: Plawski, T. E.
Paper Title Page
WEPWI028 Simulation Study Using an Injection Phase-locked Magnetron as an Alternative Source for SRF Accelerators 3544
 
  • H. Wang, T. E. Plawski, R.A. Rimmer
    JLab, Newport News, Virginia, USA
 
  As a drop-in replacement for the CEBAF CW klystron system, a 1497 MHz, CW type high efficiency magnetron using injection phase lock and amplitude variation is attractive. Amplitude control using magnetic field trimming and anode voltage modulation has been studied using analytical models and MATLAB/Simulink simulations. Since the 1497 MHz magnetron has not been built yet, previously measured characteristics of a 2.45GHz cooker magnetron are used as reference. The results of linear responses to the amplitude and phase control of a superconducting RF (SRF) cavity, and the expected overall benefit for the current CEBAF and future MEIC RF systems are presented in this paper.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2015-WEPWI028  
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THXB1 CEBAF SRF Performance during Initial 12 GeV Commissioning 3638
 
  • R. Bachimanchi, T.L. Allison, E. Daly, M.A. Drury, C. Hovater, G.E. Lahti, C.I. Mounts, R.M. Nelson, T. E. Plawski
    JLab, Newport News, Virginia, USA
 
  The Continuous Electron Beam Accelerator Facility (CEBAF) energy upgrade from 6 GeV to 12 GeV includes the installation of eleven new 100 MV cryomodules (88 cavities). The superconducting RF cavities are designed to operate CW at an accelerating gradient of 19.3 MV/m with a QL of 3×107. Not all the cavities were operated at the minimum gradient of 19.3 MV/m with the beam. Though the initial 12 GeV milestones were achieved during the initial commissioning of CEBAF, there are still some issues to be addressed for long term reliable operation of these modules. This paper reports the operational experiences during the initial commissioning and the path forward to improve the performance of C100 (100 MV) modules.  
slides icon Slides THXB1 [5.595 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2015-THXB1  
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