Single Bunch Electron Cloud Effects in the NLC Beam Delivery System
نویسندگان
چکیده
A positron be additional focusing is g cloud densities. This pa Linear Collider Collaboration Tech Notes Single Bunch Electron Cloud Effects in the NLC Beam Delivery System David Chen, Arthur Chang, M. T. F. Pivi, T. O. Raubenheimer Stanford Linear Accelerator Center Stanford University Stanford, CA am passing through a linear collider beam delivery line is finely focused to desired specifications. Unwanted enerated by beam-electron-cloud interactions that can cause beam size increases at the IP when there are high per examines the severity of the electron cloud effects and assesses the critical cloud density. Single Bunch Electron Cloud Effects in the NLC Beam Delivery System David Chen, Arthur Chang, Dan Bates, Mauro Pivi, Tor Raubenheimer Stanford Linear Accelerator Center, Stanford University, Stanford, CA 94309
منابع مشابه
Single-bunch Electron Cloud Effects in the Glc/nlc, Us-cold and Tesla Low Emittance Transport Lines*
This paper examines the severity of the electron cloud effects in the Low Emittance Transport (LET) of linear colliders including the Bunch-Compressor System (BCS) and Beam Delivery System (BDS). We examine the electron cloud effects in the normal-conducting GLC/NLC or X-Band, and the super-conducting US-Cold and TESLA linear collider designs through the use of specially developed computer simu...
متن کاملElectron Cloud Effect in Damping Rings of Linear Colliders
Design of Linear Collider projects are in progress as a world wide collaboration. There are two possibility for the linear collider scheme: one is normal conducting cavity with X/C band power source, and another is superconducting cavity with L band power source. A positron damping ring storages positron beam during several damping time and extracts the beam with a very low emittance to a main ...
متن کاملSecondary electron yield measurements from thin surface coatings for NLC electron cloud reduction
In the beam pipe of the positron damping ring of the Next Linear Collider, electrons will be created by beam interaction with the surrounding vacuum chamber wall and give rise to an electron cloud. Several solutions are possible for avoiding the electron cloud, without changing the bunch structure or the diameter of the vacuum chamber. Some of the currently available solutions for preventing th...
متن کاملAmplitude and Phase Deviation in the Nlc Detuned Structure
The 1.8m accelerating structure for the NLC consists of 204 individual cells and two coupling cells each differing in phase from their full cell nearest neighbor by 2x/3 radians. In order to avoid the deleterious effects of beam breakup it is required to minimize the trailing wake field left behind by electron beam bunch trains traversing the iris-loaded slow-wave structure. This is effected by...
متن کاملMeasurement and Simulation of Electron Cloud Induced Emittance Growth at Cesrta
This paper presents recent observations obtained on the study of electron cloud induced instabilities and emittance growth on positron beams at the Cornell Electron-Positron Storage Ring Test Acceleartor (CesrTA), and the simulation of these phenomena under similar beam conditions using the program CMAD. Results show that the transition to large bunch oscillations ocurrs at similar electron clo...
متن کامل