The Pohang Light Source (PLS) storage ring uses a longitudinal feedback system (LFS), which is a bunch-by-bunch feedback system, to cure the longitudinal coupled bunch instabilities due to higher order modes of RF cavities. The LFS employs the digital electronics and the DSP filter algorithm, and uses a cavity-type kicker. We carry out the experiment on the basic performances of the LFS such as the effects of the RF gap voltage variation and the RF phase shift, and the timing, etc. This paper will describe the basic performance analysis as well as the test results of curing the instabilities due to the HOMs.
A programmable longitudinal feedback system using a parallel array of AT&T 1610 digital signal p...
A programmable longitudinal feedback system based on four AT&T 1610 digital signal processors ha...
Electron beam coupled-bunch instabilities can limit and degrade the performance of storage ring base...
The Pohang Light Source (PLS) storage ring uses a longitudinal feedback system (LFS) that is a bunch...
The Pohang Light Source (PLS) storage ring was origi-nally designed to store the beam current up to ...
In the Pohang Light Source(PLS) storage ring, beam current has been limited at less than 180mA by th...
The higher order modes (HOM's) of RF cavities at the Pohang Light Source (PLS) storage ring cau...
In the Pohang Light Source (PLS), there are serious efforts to increase the stored beam current up t...
The stable beam current of the Pohang Light Sourer: (PLS) is normally limited to about 150 mA despit...
The stable beam current of the Pohang Light Sourer: (PLS) is normally limited to about 150 mA despit...
As the stored beam current increases over 240 mA, transverse coupled-beam instability limits higher ...
In order to cure the transverse coupled bunch instabilities in PLS storage ring, a TFS system, a 250...
In order to cure the transverse coupled bunch instabilities in PLS storage ring, a TFS system, a 250...
The Pedersen analysis of the low-level rf feedback system assumes that all bunches oscillate in phas...
A bunch by bunch transverse feedback system, as a complement of the longitudinal feedback system req...
A programmable longitudinal feedback system using a parallel array of AT&T 1610 digital signal p...
A programmable longitudinal feedback system based on four AT&T 1610 digital signal processors ha...
Electron beam coupled-bunch instabilities can limit and degrade the performance of storage ring base...
The Pohang Light Source (PLS) storage ring uses a longitudinal feedback system (LFS) that is a bunch...
The Pohang Light Source (PLS) storage ring was origi-nally designed to store the beam current up to ...
In the Pohang Light Source(PLS) storage ring, beam current has been limited at less than 180mA by th...
The higher order modes (HOM's) of RF cavities at the Pohang Light Source (PLS) storage ring cau...
In the Pohang Light Source (PLS), there are serious efforts to increase the stored beam current up t...
The stable beam current of the Pohang Light Sourer: (PLS) is normally limited to about 150 mA despit...
The stable beam current of the Pohang Light Sourer: (PLS) is normally limited to about 150 mA despit...
As the stored beam current increases over 240 mA, transverse coupled-beam instability limits higher ...
In order to cure the transverse coupled bunch instabilities in PLS storage ring, a TFS system, a 250...
In order to cure the transverse coupled bunch instabilities in PLS storage ring, a TFS system, a 250...
The Pedersen analysis of the low-level rf feedback system assumes that all bunches oscillate in phas...
A bunch by bunch transverse feedback system, as a complement of the longitudinal feedback system req...
A programmable longitudinal feedback system using a parallel array of AT&T 1610 digital signal p...
A programmable longitudinal feedback system based on four AT&T 1610 digital signal processors ha...
Electron beam coupled-bunch instabilities can limit and degrade the performance of storage ring base...