On Reducing the coupling impedance of step discontinuities in vacuum chambers

A MEASUREMENT OF THE LONGITUDINAL COUPLING IMPEDANCE OF THE RC NETWORKS USED AT THE INSULATED FLANGES OF THE AGS VACUUM CHAMBERS

10.2172/1151195 ◽

1987 ◽

Author(s):

D. Kasha ◽

J. Brennan

Keyword(s):

Coupling Impedance ◽

Vacuum Chambers ◽

Rc Networks

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LONGITUDINAL COUPLING IMPEDANCE FOR PARTICLE BEAMS OF PARABOLIC TRANSVERSE CHARGE ISTRIBUTION MOVING IN A RESISTIVE CULINDRICAL BEAM-PIPE OF FINITE WALL THICKENS

Al-Azhar Bulletin of Science ◽

10.21608/absb.2016.60511 ◽

2016 ◽

Vol 27 (Issue 1-B) ◽

pp. 11-18

Author(s):

AHMED AL-KHATEEB ◽

NOUF AL-SALEEM

Keyword(s):

Coupling Impedance ◽

Particle Beams ◽

Beam Pipe

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Brazing Vacuum Ceramic Tubes - A Diffusion Profile in the Joint

Defect and Diffusion Forum ◽

10.4028/www.scientific.net/ddf.367.86 ◽

2016 ◽

Vol 367 ◽

pp. 86-95

Author(s):

Osmar Roberto Bagnato ◽

R.F. Francisco ◽

A.L. Gobbi ◽

Tatiane Falvo ◽

P.M. Pimentel

Keyword(s):

Electron Beam ◽

High Vacuum ◽

Diffusion Profile ◽

Film Deposition ◽

High Brightness ◽

Vacuum Chambers ◽

Ceramic Components ◽

Synchrotron Light ◽

The Magnetic Field ◽

Design Construction

The Sirius Project is an initiative of the Brazilian Synchrotron Light Laboratory - LNLS (CNPEM - MCTI), for the design, construction and operation of a new synchrotron radiation source 3rd generation, with high brightness and energy of the electrons of 3.0 GeV. Among many other components there will be built 80 ceramic cameras embedded in special magnets, whose function is to act to correct the orbit of the electron beam in the storage ring. The ceramic chamber is crucial for this application because this material is transparent to the magnetic field generated in the electro magnet and thus acts directly on the electron beam. The difficulty of these constructive components lies in the fact that, the ceramic components must be attached to metal components will join vacuum chambers that make up the ring, and then must present excellent mechanical and vacuum tight. The process of chemical bonding between the ceramic and metal components is performed by brazing in high vacuum. After brazing, a film is deposited of copper with 7 micrometers thickness. The objective of this paper is to describe the process of film deposition and brazing of copper and the excellent results obtained in the production, mechanical characterization, microstructural and tightness.

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