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Watanabe, J.

Paper Title Page
THPEA024 Duct-Shaped SiC Dummy Load of L-band Power Distribution System for XFEL/SPring-8 3729
 
  • J. Watanabe, S. Kimura, K. Sato
    Toshiba, Yokohama
  • T. Asaka, H. Ego, H. Hanaki
    JASRI/SPring-8, Hyogo-ken
  
 

TOSHI­BA is man­u­fac­tur­ing the L-band ac­cel­er­a­tion sys­tem for the SPring-8 Joint Pro­ject for XFEL. We have de­vel­oped a new type duct-shaped SiC dummy load for its power dis­tri­bu­tion sys­tem. The load ter­mi­nates a WR650 waveg­uide and can ab­sorb the max­i­mum mean power of 10kW. In order to re­duce VSWR less than 1.1 in the fre­quen­cy range of 1.428GHz, we shaped the SiC ab­sorber into a 35cm long ta­pered cylin­der and mount­ed match­ing stubs in the waveg­uide near the inlet of the load. The SiC ab­sorber was fit into a cylin­dri­cal cop­per with ef­fi­cient wa­ter-cool­ing chan­nels. The de­sign and man­u­fac­ture and the low-pow­er tests of our orig­i­nal dummy load are de­scribed in this paper.