Title :
Beam intensity observation system at SRRC
Author :
Wang, C.J. ; Kuo, C.H. ; Chen, J.S. ; Chen, J. ; Hsu, K.T. ; Jan, G.J.
Author_Institution :
Synchrotron Radiat. Res. Center, Hsinchu, Taiwan
Abstract :
Beam intensity and lifetime measurement system have been implemented at SRRC. The average beam intensity is measured by direct current current transformer. The magnet shielding of DCCT is used to reduce stray magnet field interference, then output signal is digitized by high resolution analog to digital converter on VME crate. In order to be compatible with the data refreshing rate of main control system, which is 10 samples per second, all digitized data are filtered and decimated by digital filter to reduce noise level. The adaptive lifetime calculation algorithm are applied to provide fast time response
Keywords :
data acquisition; electron accelerators; nuclear electronics; particle beam diagnostics; storage rings; SRRC; VME crate; beam intensity observation system; digital converter; digital filter; direct current current transformer; lifetime measurement system; stray magnet field interference; Analog-digital conversion; Current measurement; Current transformers; Digital filters; Interference; Lifetime estimation; Magnetic field measurement; Magnetic separation; Magnetic shielding; Signal resolution;
Conference_Titel :
Particle Accelerator Conference, 1995., Proceedings of the 1995
Conference_Location :
Dallas, TX
Print_ISBN :
0-7803-2934-1
DOI :
10.1109/PAC.1995.505628
