Bunch Lengthening and Energy Spread Increasing in Electron Storage Rings
نویسنده
چکیده
A theory of bunch lengthening and energy spread increasing in electron storage rings is established by introducing the concept of collective random excitations. Analytical formulae are established to calculate the equilibrium bunch length and the energy spread in the whole current range. Some experimental results are compared with those predicted by the theory and the comparison results are quite well.
منابع مشابه
A Cure for the Energy Spread Increasing Related Bunch Lengthening in Electron Storage Rings
Having revealed the cause of the energy spread increasing and the corresponding bunch lengthening in electron storage rings in ref. 1, in this paper, we will propose a cure for the suppression of these collective effects. It is suggested to install an active rf cavity in the ring with the working rf wavelength about four to five times the rms bunch length. The limitation about this cure is also...
متن کاملSingle Bunch Longitudinal Instabilities in Proton Storage Rings
In this paper we try to explain the single bunch energy spread increasing in a proton storage ring. Different from an electron machine, the random motions of some particles of a bunch are caused by the nonlinear synchrotron oscillations perturbed by the short range longitudinal wakefield. An analytical single bunch threshold current formula has been established to indicate the beginning of the ...
متن کاملAn Improved Empirical Equation for Bunch Lengthening in Electron Storage Rings
In this paper we propose an improved empirical equation for the bunch lengthening in electron storage rings. The comparisons are made between the analytical and experimental results, and the agreements are quite well. This improved equation can be equally applied to the case where a storage ring is very resistive (such as the improved SLC damping rings) instead of inductive as usual.
متن کاملBunch Lengthening Calculations for the Slc Damping Rings’
The problem of bunch lengthening in electron storage rings has been treated by many people, and there have been many experiments. In the typical experiment, the theory is used to determine the impedance of the ring. What has been lacking thus far, however, is a calculation of bunch lengthening that uses a carefully calculated ring impedance (or wakefield). In this paper we begin by finding the ...
متن کاملSome Observations on Bunch Lengthening
The phenomenon of current dependent bunch lengthening discovered at AC0 and ADONE about seven years ago can be used as an engineering diagnostic tool to examine how the longitudinal electromagnetic field of a beam couples to its surroundings. 1 The importance of isolating such coupling factors is that they may give rise to damaging instabilities. Another practical reason for studying the effect...
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 1998