Author: Donetskiy, R.V.
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WEPMB045 Measurement of Higher Order Modes Electrodynamic Characteristics for Array of Two 2400 MHz Cavities 2214
 
  • Ya.V. Shashkov, R.V. Donetskiy, M.V. Lalayan, N.P. Sobenin
    MEPhI, Moscow, Russia
  • A. Orlov
    NRNU, Moscow, Russia
 
  Funding: *Work supported by Ministry of Education and Science grant 3.245.2014/r and the EU FP7 HiLumi LHC ' Grant Agreement 284404
In the frameworks of the High Luminosity Large hadron collider (HL-LHC) upgrade program an application of additional superconducting harmonic cavities operating at 800 MHz is currently under discussion. As a candidate, the two cavities with grooved beam pipes connected by the drift tube were suggested. In this article of measurements of Qload are performed for the aluminum model of array of two cavities connected by drift tube. Field distribution of Fundamental Mode (FM) and Higher Order Modes (HOM) were measured for aluminum prototype with a frequency of the operational mode of 2400 MHz, and their comparison with the simulation results.
Higher order modes
 
DOI • reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-WEPMB045  
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WEPMB047 Higher Order Modes Couplers for 800 MHz Harmonic Cavity 2217
 
  • Ya.V. Shashkov, R.V. Donetskiy, M. Gusarova, N.P. Sobenin
    MEPhI, Moscow, Russia
 
  Funding: *Work supported by Ministry of Education and Science grant 3.245.2014/r
For the higher order modes damping (HOM) in the 800 MHz superconducting single cell cavity the HOM coupler was developed. Several versions of the coupler design were shown. For the chain of two cavities with couplers the calculations of external Q-factor are presented. The calculations of multipactor discharge of cavity were also conducted.
Higher order modes, Tesla, couplers
 
DOI • reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-WEPMB047  
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