skip to main content

SciTech Connect

Title: Development of a 2 MW CW Waterload for Electron Cyclotron Heating Systems

Calabazas Creek Research, Inc. developed a load capable of continuously dissipating 2 MW of RF power from gyrotrons. The input uses HE11 corrugated waveguide and a rotating launcher to uniformly disperse the power over the lossy surfaces in the load. This builds on experience with a previous load designed to dissipate 1 MW of continuous RF power. The 2 MW load uses more advanced RF dispersion to double the capability in the same size device as the 1 MW load. The new load reduces reflected power from the load to significantly less than 1 %. This eliminates requirements for a preload to capture reflected power. The program updated control electronics that provides all required interlocks for operation and measurement of peak and average power. The program developed two version of the load. The initial version used primarily anodized aluminum to reduce weight and cost. The second version used copper and stainless steel to meet specifications for the ITER reactor currently under construction in France. Tests of the new load at the Japanese Atomic Energy Agency confirmed operation of the load to a power level of 1 MW, which is the highest power currently available for testing the load. Additional tests more » will be performed at General Atomics in spring 2013. The U.S. ITER organization will test the copper/stainless steel version of the load in December 2012 or early in 2013. Both loads are currently being marketed worldwide. « less
Authors:
; ; ; ;
Publication Date:
OSTI Identifier:
1054507
Report Number(s):
Final Report
DOE Contract Number:
SC0001930
Resource Type:
Technical Report
Research Org:
Calabazas Creek Research, Inc.
Sponsoring Org:
USDOE; USDOE SC Office of Fusion Energy Sciences (SC-24); USDOE Office of Science (SC)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY RF load, gyrotron, electron cyclotron heating, plasma heating, waterload