Title :
Copper, Tungsten and Molybdenum RF Breakdown Experiments
Author :
Laurent, L. ; Scheitrum, G.
Author_Institution :
Stanford Linear Accel. Center, Menlo Park
Abstract :
In this study, the experimental results for tungsten and molybdenum are compared to copper under the same high field conditions (350 MV/m and 500 MV/m). The RF pulse length for all three experiments is 150 ns. Tungsten and molybdenum are both refractory metals with robust physical properties that are recognized for their high melting point, low thermal expandability, low vapour pressure, and high yield strength. The CLIC study group at CERN has conducted several accelerator experiments at 30 GHz with structures that have tungsten and molybdenum iris inserts.
Keywords :
accelerator RF systems; accelerator cavities; copper; electric breakdown; linear colliders; melting point; microwave devices; molybdenum; refractories; thermal expansion; tungsten; yield strength; CERN; CLIC study group; Cu; Mo; RF breakdown experiments; W; accelerator experiments; copper; frequency 30 GHz; high electric field conditions; high melting point; high yield strength; low vapour pressure; molybdenum; physical properties; refractory metals; thermal expandability; time 150 ns; tungsten; Copper; Cutting tools; Electric breakdown; Machining; Nose; Radio frequency; Surface contamination; Surface topography; Testing; Tungsten;
Conference_Titel :
Vacuum Electronics Conference, 2007. IVEC '07. IEEE International
Conference_Location :
Kitakyushu
Print_ISBN :
1-4244-0633-1
DOI :
10.1109/IVELEC.2007.4283276
