Title :
Test of fast-digital beamline feedback control at the photon factory
Author :
Nakamura, Norio ; Katsura, Tomotaro
Author_Institution :
KEK, Nat. Lab. for High Energy Phys., Ibaraki, Japan
Abstract :
A fast-digital feedback system stabilizing the photon beam position for a beamline was tested. A DSP (digital signal processor) board linked with 16-bit ADC and 14-bit DAC boards was used as a digital controller of the feedback system. The DSP system sampled the signals from a photon beam position monitor at a high rate of 10 kHz and set the magnet currents for a 3-magnet orbit bump steering system at the same rate. The system frequency response was easily compensated in gain and phase by programming. As a result, the feedback system well suppressed the beam motion up to 100 Hz
Keywords :
analogue-digital conversion; beam handling equipment; beam handling techniques; computerised control; controllers; digital control; digital signal processing chips; digital-analogue conversion; electron accelerators; feedback; frequency response; nuclear electronics; particle beam diagnostics; physical instrumentation control; physics computing; storage rings; 10 kHz; 100 Hz; 14-bit DAC boards; 16-bit ADC; 3-magnet orbit bump steering; DSP board; beam motion; digital controller; digital signal processor; fast-digital beamline feedback control; fast-digital feedback system; magnet currents; photon beam position monitor; photon beam position stabilization; photon factory; system frequency response; Control systems; Digital signal processing; Feedback control; Monitoring; Particle beams; Power supplies; Production facilities; Sampling methods; System testing; Transfer functions;
Conference_Titel :
Particle Accelerator Conference, 1993., Proceedings of the 1993
Conference_Location :
Washington, DC
Print_ISBN :
0-7803-1203-1
DOI :
10.1109/PAC.1993.309287
