Electron Cloud Studies for KEKB and ATF

نویسنده

  • F. Zimmermann
چکیده

I describe a few recent electron-cloud simulations for KEKB and the ATF. For KEKB the dependence of the electron build up on the peak solenoid field is studied, for the ATF the minimum bunch population required to build up an electron cloud in a possible future positron operation.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

New Simulations of Positron-beam Electron Cloud Build- up and Electron-beam Coupled-bunch Instabilities for Kekb and Super-kekb

I summarize recent electron-cloud and coupled-bunch instability simulation studies for KEKB and SuperKEKB. The possible suppression of the electron-cloud build up inside quadrupole magnets by means of 4 permanent dipoles or by a super-imposed solenoid is investigated for the LER positron beam. Also studied is the electron accumulation in three different types of solenoidal fields, namely for a ...

متن کامل

EUROPEAN ORGANIZATION FOR NUCLEAR RESEARCH CERN-SL-Note-2000-061 AP More Electron Cloud Studies for KEKB: Long-Term Evolution, Solenoid Patterns, and Fast Blow Up

We report recent electron-cloud studies for the Low Energy Ring (LER) of KEKB, continuing earlier investigations [1, 2]. Here we simulate the build up and decay time of the cloud for various solenoid and C-yoke configurations, discuss the electron density enhancement during the bunch passage [3], and estimate the instability threshold using the Ruth-Wang theory of fast blow up [4, 5]. Geneva, S...

متن کامل

Beam Tests of a Clearing Electrode for Electron Cloud Mitigation at Kekb Positron Ring*

In order to mitigate the electron cloud instability in an intense positron ring, an electron clearing electrode with a very thin structure has been developed. The electrode was tested with a positron beam of the KEKB B-factory (KEKB). A drastic reduction in the electron density around the beam was demonstrated in a wiggler magnet with a dipole-type magnetic field of 0.78 T. The clearing electro...

متن کامل

Distortion of crabbed bunch due to the electron cloud

In order to improve the luminosity, two crab cavities have been installed in KEKB HER and LER [1]. Since there is only one crab cavity in each ring, the crab cavity generates a horizontally titled bunch along the whole ring. The achieved specific luminosity with crabbed bunch is higher, but it is not as high as that from beam-beam simulation [2]. One of the suspicions is the electron cloud. The...

متن کامل

Study for Ilc Damping Ring at Kekb

ILC damping ring consists of very low emittance electron and positron storage rings. It is necessary for ILC damping ring to study electron cloud effects in such low emittance positron ring. We propose a low emittance operation of KEKB to study the effects.

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2003