Geometric dependence of radio-frequency breakdown in normal conducting accelerating structures

Journal Article · Mon Oct 25 00:00:00 EDT 2010 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.3505339· OSTI ID:21464535

Dolgashev, Valery; Tantawi, Sami ^[1]; Higashi, Yasuo ^[2]; Spataro, Bruno ^[3]

---

1. SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025 (United States)
2. High Energy Accelerator Research Organization, KEK, 1-1 Oho, Tsukuba, Ibaraki 305-0801 (Japan)
3. INFN-LNF, 00044 Frascati (Italy)

We present the experimental results of a systematic study of rf breakdown phenomenon in high vacuum accelerator structures. In this study, the surface processing, geometry, and materials of the structures have been varied, one parameter at a time. The breakdown rate or alternatively, the probability of breakdown/pulse/meter has been recorded for different operating parameters. These statistical data reveal a strong dependence of breakdown probability on surface magnetic field, or alternatively on surface pulsed heating. This is in contrast to the classical view of electric field dependence. We will present our experimental methodology and results showing this remarkable correlation.

• OSTI ID: 21464535
• Journal Information: Applied Physics Letters, Vol. 97, Issue 17; Other Information: DOI: 10.1063/1.3505339; (c) 2010 American Institute of Physics; ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
BREAKDOWN
CORRELATIONS
ELECTRIC FIELDS
LINEAR ACCELERATORS
MAGNETIC FIELDS
PROBABILITY
PROCESSING
PULSES
RADIOWAVE RADIATION
RF SYSTEMS
SURFACE FINISHING
SURFACES
ACCELERATORS
ELECTROMAGNETIC RADIATION
RADIATIONS