Development of an S-band RF window for linear colliders

Author

Miura ; Matsumoto, H.

Author_Institution

Graduate Univ. for Adv. Studies, Ibaraki, Japan

fYear

1993

fDate

17-20 May 1993

Firstpage

1124

Abstract

We report on our research and development of an S-band (2856 MHz) alumina RF window for a high power transmission which exceeds 100 MW. We have studied the mechanism of RF breakdowns of alumina disks experimentally with a test facility based on a resonant ring. At a higher power transmission (>50 MW), impurities within alumina due to sintering binder materials and internal voids were shown to be mostly responsible. An experiment at a resonant ring has shown that the new RF window by using high-purity (99.9%) and low porosity (0.5%) alumina disks can successfully withstand a maximum peak transmission-power of 310 MW with a pulse width 2.5 μs at 10 Hz repetition rate, and a maximum average transmission-power of 300 MW with pulse width 2.5 μs at 50 Hz

Keywords

alumina; beam handling equipment; electron accelerators; linear accelerators; 100 MW; 2856 MHz; Al₂O₃; RF breakdowns; S-band RF window; alumina disks; binder materials; high power transmission; internal voids; linear colliders; resonant ring; Acceleration; Electric breakdown; Impurities; Klystrons; Power transmission; Radio frequency; Resonance; Space vector pulse width modulation; Test facilities; Testing;

fLanguage

English

Publisher

ieee

Conference_Titel

Particle Accelerator Conference, 1993., Proceedings of the 1993

Conference_Location

Washington, DC

Print_ISBN

0-7803-1203-1

Type

conf

DOI

10.1109/PAC.1993.308663

Filename

308663