9-cell Cavity Clean Room Assembly Completed for IHEP 1.3 GHz ILC Test Cryomodule
Jun 09, 2014 Email"> PrintText Size
The clean-room assembly of a 1.3 GHz ILC 9-cell superconducting RF cavity in a test cryomodule was completed at the Institute of High Energy Physics (IHEP) on May 23, 2014. The cavity will later be installed into the cryomodule along with the tuner and the warm part of the input coupler, and will undergo horizontal and beam tests when the 2K cryogenic system and RF power source are ready, in the next year or so.
The assembled 9-cell cavity line is 3.5 meters long, including the large-grain, low-loss 9-cell cavity, a helium vessel, the cold part of the double-window input coupler, gate valves and beam tubes. The cavity reached performance of 20 MV/m and Q0 = 1.4×1010 without field emission in the vertical test. The input coupler reached 1 MW pulsed traveling wave power in the conditioning test.
Clean-room assembly of superconducting RF cavities is a key technology and a crucial step for the performance of a superconducting accelerator. As the cavity is very sensitive to contamination, it requires extremely high standards for the environment (class 10 to 100), component cleanliness, and vacuum and assembly procedures. To maintain the cavity’s cleanliness and high Q0 in future operations, the state-of-art clean-room assembly technique developed by ILC/XFEL was used.
The assembled 9-cell cavity line at IHEP (Image by IHEP)
The clean-room assembly of a 1.3 GHz ILC 9-cell superconducting RF cavity in a test cryomodule was completed at the Institute of High Energy Physics (IHEP) on May 23, 2014. The cavity will later be installed into the cryomodule along with the tuner and the warm part of the input coupler, and will undergo horizontal and beam tests when the 2K cryogenic system and RF power source are ready, in the next year or so.
The assembled 9-cell cavity line is 3.5 meters long, including the large-grain, low-loss 9-cell cavity, a helium vessel, the cold part of the double-window input coupler, gate valves and beam tubes. The cavity reached performance of 20 MV/m and Q0 = 1.4×1010 without field emission in the vertical test. The input coupler reached 1 MW pulsed traveling wave power in the conditioning test.
Clean-room assembly of superconducting RF cavities is a key technology and a crucial step for the performance of a superconducting accelerator. As the cavity is very sensitive to contamination, it requires extremely high standards for the environment (class 10 to 100), component cleanliness, and vacuum and assembly procedures. To maintain the cavity’s cleanliness and high Q0 in future operations, the state-of-art clean-room assembly technique developed by ILC/XFEL was used.
The assembled 9-cell cavity line at IHEP (Image by IHEP)
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