Numerical Study of Photoelectron Cloud in Kek Ler
نویسندگان
چکیده
A 3-dimension particle in cell simulation code is developed to study the photoelectron cloud instabilities in KEK LER. The photoelectron motion in various kinds of magnetic field is studied in detail, especially for solenoid field. Special solenoid has been installed in KEK LER in order to reduce the photoelectron effect. Simulation shows solenoid is very effective to confine the photoelectron to the vicinity of the vacuum chamber wall and make a photoelectron free region at the vacuum pipe center. The more uniform the solenoid field is, the more effective the field is.
منابع مشابه
3d Simulation of Photoelectron Cloud in Kekb Ler
A 3-dimension particle in cell simulation code is developed to study the photoelectron cloud instabilities in KEK LER. The program has been decribed in detail. Numerical examples are shown for the photoelectron motion in various kinds of magnetic fields. Simulation shows solenoid is very effective to confine the photoelectron to the vicinity of the vacuum chamber wall and make a photoelectron f...
متن کاملNumerical study of the photoelectron cloud in KEKB Low Energy Ring with a three-dimensional particle in cell method
124402-1 A three-dimensional particle in cell simulation code has been developed to study the photoelectron cloud instabilities in KEKB LER. In this report, the program is described in detail. In particular, typical simulation results are presented for the photoelectron motion in various kinds of magnetic fields. The simulation shows that a solenoid is very effective in confining the photoelect...
متن کامل3d Simulation of Photoelectron Cloud
A 3-dimensional particle simulation code is developed to study the photoelectron cloud in positron rings. The effects of the various magnetic fields in KEKB LER are presented. The distribution and evolution of the electron-cloud are simulated.
متن کاملElectron Cloud Effects, Vacuum (sps+lhc) Summary
The session summarised here was devoted to Electron Cloud Effects and Vacuum in the SPS and LHC. Seven talks were presented, covering recent experimental observations of electron cloud effects at the KEK-B Low Energy Ring (LER), measurements of surface properties at EPA, simulations of electron cloud build-up and heat load, vacuum observations and electron scrubbing in the SPS with LHC type bea...
متن کاملPurification and Fractionation of Carbon Dots using pH-controlled Cloud Point Extraction Technique
In this work, we describe a simple, green and general procedure for the purification and fractionation of carbon dots (CDs). CDs coated with oxygen-containing functional groups were synthesized by thermal pyrolysis of citric acid. The product of the reaction was first Purified and then fractionated into two distinct kinds of CDs (f4 and f1) using pH-controlled cloud point extraction (CPE) techn...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2001