Fast digital feedback system for energy beam position stabilization

Conference · Fri Jan 01 04:00:00 EST 1999

OSTI ID:5821056

Dickson, R; Lebedev, V

A digital fast feedback system for beam energy and position stabilization at the target of the CEBAF accelerator is capable of suppressing beam motion in the frequency band from 0 to 80 Hz and also performs narrow band suppression at the first twelve power line harmonics. The system utilizes two VME computers and runs at a 2.4 kHz sampling rate. The numerical algorithm is based on a recursive digital filter with an additional feedforward loop for suppression of high power line harmonics. The system suppresses beam motion by a factor greater than ten, thus achieving the stabilization of relative beam energy fluctuations to better than 10[sup [minus]5] and stabilization of beam position on the target to better than 20 [mu]m.

• Research Organization: Thomas Jefferson National Accelerator Facility, Newport News, VA (United States)
• Sponsoring Organization: USDOE Office of Energy Research (ER) (United States)
• DOE Contract Number: AC05-84ER40150
• OSTI ID: 5821056
• Report Number(s): DOE/ER/40150-1401; JLAB-ACP-99-02
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
430300* -- Particle Accelerators-- Auxiliaries & Components
ACCELERATORS
ALGORITHMS
BEAM POSITION
CEBAF ACCELERATOR
COMPUTERIZED CONTROL SYSTEMS
CONTROL SYSTEMS
DIGITAL FILTERS
FEEDBACK
HARMONICS
LINEAR ACCELERATORS
MATHEMATICAL LOGIC
ON-LINE CONTROL SYSTEMS
ON-LINE SYSTEMS
OSCILLATIONS