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Comparison of DC and RF conditioning

This presentation discusses the comparative analysis of DC and RF conditioning methods as presented by Jorge Giner-Navarro and colleagues at the CLIC RF Structure Development Meeting. Key topics include the conditioning history of the TD26R05CC and TD24R05 structures, BDR measurements, and the evolution of breakdown rates versus surface electric field gradients. The findings highlight crucial scaling laws for normalized surface electric field gradients and breakdown rates, contributing to advancements in RF structure performance at CERN and KEK facilities.

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Comparison of DC and RF conditioning

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  1. Comparison of DC and RF conditioning Jorge Giner-Navarro A.Degiovanni, N.Shipman, W.Wuensch and on behalf of the Breakdown studies and DC Spark team 09/04/2014 CLIC RF Structure Development Meeting

  2. Conditioning history of TD26R05CC at XBOX1 (CERN) J. Giner-Navarro - CLIC RF Structure Development meeting

  3. History plot of TD24R05 at NEXTEF (KEK) 1060 BDs 591 BDs Conditioning BDR measurements T. Higo CLIC Workshop 2014 J. Giner-Navarro - CLIC RF Structure Development meeting

  4. History plot of HRR Fixed-Gap System at DC Spark lab Voltage pulse length tp=12 µs Gap = 15µm (window= 50M Pulses) J. Giner-Navarro - CLIC RF Structure Development meeting

  5. Normalized Surface Electric Field Gradient scaling law J. Giner-Navarro - CLIC RF Structure Development meeting

  6. Normalized Surface Electric Field Same conditioning level at different number of BD J. Giner-Navarro - CLIC RF Structure Development meeting

  7. Normalized BreakDown Rate BDR scaling law J. Giner-Navarro - CLIC RF Structure Development meeting

  8. Thank you for your attention ! J. Giner-Navarro - CLIC RF Structure Development meeting

  9. EXTRA SLIDES J. Giner-Navarro - CLIC RF Structure Development meeting

  10. Normalized BreakDown Rate per unit Area Area with 95% of the max Electric field: TD26R05CC 646 mm2 TD24R05 612 mm2 FFG electrodes 5655 mm2 (approx estimation) J. Giner-Navarro - CLIC RF Structure Development meeting

  11. Evolution of BDR vs Surf E field HRR Fixed Gap System • For the same Es, BDR decreases • We reach same level of BDR with higher Es J. Giner-Navarro - CLIC RF Structure Development meeting

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