High power test of the first C-band (5712 MHz) 50 MW PPM klystron

Author

Matsumoto, H. ; Shintake, T. ; Ohkubo, Y. ; Taoka, H. ; Ohhashi, K. ; Kakuno, K.

Author_Institution

KEK, Ibaraki, Japan

Volume

2

fYear

2001

fDate

2001

Firstpage

993

Abstract

Hot isostatic pressing (HIP) technique has been applied to fabricate a magnetic circuit in a PPM klystron. Simply stacking disks of the magnetic stainless-steel (Mag-SUS) and oxygen-free-copper (OFC) alternatively, and processing in a HIP vessel filled with pressurised Ar gas at 1200-kgf/cm² and temperature of 800°C for 2 hours, they were bonded in one block with diffusion bonding. No brazing-alloys were used in this process. After machining the rf-cavities and beam drift-tube on the bonded PPM stack, they were assembled together in one body by means of a conventional brazing method. The C-band PPM klystron based on this technique was fabricated in the course of the Linear Collider R&D. An output power of 37 MW was generated with 2.5-μsec pulse width and 50 pps repetition rate

Keywords

accelerator RF systems; brazing; hot pressing; klystrons; 2 h; 37 MW; 800 degC; Ar; Ar gas; C-band PPM klystron; Cu; Linear Collider; O-free-Cu; brazing; diffusion bonding; high power test; hot isostatic pressing; magnetic stainless-steel; output power; rf-cavities; Argon; Circuit testing; Diffusion bonding; Hip; Klystrons; Magnetic circuits; Power generation; Pressing; Stacking; Temperature;

fLanguage

English

Publisher

ieee

Conference_Titel

Particle Accelerator Conference, 2001. PAC 2001. Proceedings of the 2001

Conference_Location

Chicago, IL

Print_ISBN

0-7803-7191-7

Type

conf

DOI

10.1109/PAC.2001.986552

Filename

986552