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Frequency and temperature dependence of electrical breakdown at 21, 30, and 39 GHz | | H H Braun
; S Döbert
; I Wilson
; W Wuensch
; | | Date: |
6 Jun 2003 | | Journal: | Phys Rev Lett, 90 (22), 224801 | | Abstract: | A TeV-range e(+)e(-) linear collider has emerged as one of the most promising candidates to extend the high energy frontier of experimental elementary particle physics. A high accelerating gradient for such a collider is desirable to limit its overall length. Accelerating gradient is mainly limited by electrical breakdown, and it has been generally assumed that this limit increases with increasing frequency for normal-conducting accelerating structures. Since the choice of frequency has a profound influence on the design of a linear collider, the frequency dependence of breakdown has been measured using six exactly scaled single-cell cavities at 21, 30, and 39 GHz. The influence of temperature on breakdown behavior was also investigated. The maximum obtainable surface fields were found to be in the range of 300 to 400 MV/m for copper, with no significant dependence on either frequency or temperature. | | Source: | PubMed, pmid12857314 | | Services: | Forum | Review | Favorites | |
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