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2003•Unpublished venueRequires access

ESTIMATION OF ELECTRON-CLOUD DENSITY BY MEANS OF MEASURING BETATRON TUNE AT KEKB LOW ENERGY RING

T. Ieiri, H. Fukuma, T. Kawamoto, Su Su Win

Open publisher page 1 citations

Abstract

The KEKB Low Energy Ring suffers from blowup in the vertical size of positron bunches due to an electron cloud. Solenoids are installed around the ring to confine the electrons to the vicinity of the chamber. The density of the electron cloud can be estimated from a change in the betatron tune of an individual bunch. Tune-shift measurements were performed while the solenoid field, the bunch spacing and the bunch current changed.

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What this paper is about

The KEKB Low Energy Ring suffers from blowup in the vertical size of positron bunches due to an electron cloud. Solenoids are installed around the ring to confine the electrons to the vicinity of the chamber. The density of the electron cloud can be estimated from a change in the betatron tune of an individual bunch. Tune-shift measurements were performed while the solenoid field, the bunch spacing and the bunch current changed.

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Available abstract

The KEKB Low Energy Ring suffers from blowup in the vertical size of positron bunches due to an electron cloud. Solenoids are installed around the ring to confine the electrons to the vicinity of the chamber. The density of the electron cloud can be estimated from a change in the betatron tune of an individual bunch. Tune-shift measurements were performed while the solenoid field, the bunch spacing and the bunch current changed.

Key concepts: Betatron, KEKB, Physics, Electron, Nuclear physics, Bunches, Positron, Atomic physics

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ESTIMATION OF ELECTRON-CLOUD DENSITY BY MEANS OF MEASURING BETATRON TUNE AT KEKB LOW ENERGY RING — Research Paper | ScholarLens